/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 21:51:13,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:51:13,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:51:13,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 21:51:13,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 21:51:13,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 21:51:13,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 21:51:13,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 21:51:13,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 21:51:13,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 21:51:13,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 21:51:13,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 21:51:13,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:51:13,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:51:13,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:51:13,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:51:13,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:51:13,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:51:13,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:51:13,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:51:13,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:51:13,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:51:13,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:51:13,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:51:13,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 21:51:13,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 21:51:13,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 21:51:13,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 21:51:13,297 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 21:51:13,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 21:51:13,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 21:51:13,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 21:51:13,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 21:51:13,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 21:51:13,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 21:51:13,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 21:51:13,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 21:51:13,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 21:51:13,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:51:13,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:51:13,304 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:51:13,304 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 [2020-08-18 21:51:13,330 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:51:13,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:51:13,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:51:13,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:51:13,332 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:51:13,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:51:13,333 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:51:13,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:51:13,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:51:13,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:51:13,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:51:13,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:51:13,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:51:13,334 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:51:13,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:51:13,335 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:51:13,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:51:13,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:51:13,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:51:13,335 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:51:13,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:51:13,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:51:13,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:51:13,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:51:13,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:51:13,337 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:51:13,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:51:13,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:51:13,337 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:51:13,337 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; [2020-08-18 21:51:13,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:51:13,678 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:51:13,684 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:51:13,686 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:51:13,686 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:51:13,687 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product63.cil.c [2020-08-18 21:51:13,763 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/abbf4e686/a8b845e2954f44bfbcb75fcc47d2d29f/FLAGb178919ef [2020-08-18 21:51:14,304 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:51:14,305 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product63.cil.c [2020-08-18 21:51:14,320 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/abbf4e686/a8b845e2954f44bfbcb75fcc47d2d29f/FLAGb178919ef [2020-08-18 21:51:14,615 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/abbf4e686/a8b845e2954f44bfbcb75fcc47d2d29f [2020-08-18 21:51:14,626 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:51:14,628 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:51:14,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:51:14,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:51:14,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:51:14,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:51:14" (1/1) ... [2020-08-18 21:51:14,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48b9c226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:51:14, skipping insertion in model container [2020-08-18 21:51:14,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:51:14" (1/1) ... [2020-08-18 21:51:14,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:51:14,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:51:15,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:51:15,190 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:51:15,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:51:15,307 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:51:15,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:51:15 WrapperNode [2020-08-18 21:51:15,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:51:15,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:51:15,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:51:15,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:51:15,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:51:15" (1/1) ... [2020-08-18 21:51:15,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:51:15" (1/1) ... [2020-08-18 21:51:15,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:51:15" (1/1) ... [2020-08-18 21:51:15,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:51:15" (1/1) ... [2020-08-18 21:51:15,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:51:15" (1/1) ... [2020-08-18 21:51:15,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:51:15" (1/1) ... [2020-08-18 21:51:15,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:51:15" (1/1) ... [2020-08-18 21:51:15,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:51:15,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:51:15,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:51:15,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:51:15,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:51:15" (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 [2020-08-18 21:51:15,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:51:15,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:51:15,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 21:51:15,455 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 21:51:15,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 21:51:15,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 21:51:15,456 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 21:51:15,456 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 21:51:15,457 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 21:51:15,457 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 21:51:15,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 21:51:15,458 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 21:51:15,458 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 21:51:15,458 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 21:51:15,458 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 21:51:15,459 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 21:51:15,459 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:51:15,459 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 21:51:15,460 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 21:51:15,460 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 21:51:15,460 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 21:51:15,461 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 21:51:15,461 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 21:51:15,461 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 21:51:15,461 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 21:51:15,463 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 21:51:15,463 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 21:51:15,464 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 21:51:15,464 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 21:51:15,464 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 21:51:15,464 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 21:51:15,464 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 21:51:15,464 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 21:51:15,464 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 21:51:15,465 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 21:51:15,465 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 21:51:15,465 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 21:51:15,465 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 21:51:15,465 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 21:51:15,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 21:51:15,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 21:51:15,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 21:51:15,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 21:51:15,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 21:51:15,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 21:51:15,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:51:15,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 21:51:15,467 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 21:51:15,468 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 21:51:15,468 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 21:51:15,468 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 21:51:15,468 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 21:51:15,468 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 21:51:15,468 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 21:51:15,468 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 21:51:15,468 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 21:51:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 21:51:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 21:51:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 21:51:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 21:51:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 21:51:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 21:51:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 21:51:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 21:51:15,470 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 21:51:15,470 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 21:51:15,470 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 21:51:15,470 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 21:51:15,470 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:51:15,470 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 21:51:15,470 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 21:51:15,470 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 21:51:15,470 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 21:51:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 21:51:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 21:51:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 21:51:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 21:51:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 21:51:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 21:51:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 21:51:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 21:51:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 21:51:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 21:51:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 21:51:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 21:51:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 21:51:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 21:51:15,473 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 21:51:15,473 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 21:51:15,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 21:51:15,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 21:51:15,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 21:51:15,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 21:51:15,473 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 21:51:15,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 21:51:15,473 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 21:51:15,473 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 21:51:15,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 21:51:15,474 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 21:51:15,474 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 21:51:15,474 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 21:51:15,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:51:15,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 21:51:15,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:51:16,522 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:51:16,523 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 21:51:16,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:51:16 BoogieIcfgContainer [2020-08-18 21:51:16,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:51:16,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:51:16,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:51:16,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:51:16,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:51:14" (1/3) ... [2020-08-18 21:51:16,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46217f9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:51:16, skipping insertion in model container [2020-08-18 21:51:16,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:51:15" (2/3) ... [2020-08-18 21:51:16,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46217f9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:51:16, skipping insertion in model container [2020-08-18 21:51:16,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:51:16" (3/3) ... [2020-08-18 21:51:16,538 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product63.cil.c [2020-08-18 21:51:16,549 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:51:16,558 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:51:16,574 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:51:16,602 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:51:16,602 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:51:16,602 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:51:16,603 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:51:16,603 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:51:16,603 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:51:16,603 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:51:16,604 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:51:16,627 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states. [2020-08-18 21:51:16,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 21:51:16,639 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:51:16,640 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] [2020-08-18 21:51:16,640 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:51:16,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:51:16,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1893311162, now seen corresponding path program 1 times [2020-08-18 21:51:16,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:51:16,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349437362] [2020-08-18 21:51:16,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:51:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:17,323 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:51:17,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:51:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:17,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:51:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:17,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:51:17,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:17,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:51:17,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:17,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:51:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:17,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:51:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:17,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:51:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:17,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:51:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:17,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 21:51:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:17,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 21:51:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:17,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 21:51:17,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349437362] [2020-08-18 21:51:17,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:51:17,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:51:17,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513950502] [2020-08-18 21:51:17,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:51:17,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:51:17,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:51:17,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:51:17,524 INFO L87 Difference]: Start difference. First operand 212 states. Second operand 4 states. [2020-08-18 21:51:18,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:51:18,915 INFO L93 Difference]: Finished difference Result 372 states and 477 transitions. [2020-08-18 21:51:18,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 21:51:18,917 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 21:51:18,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:51:18,934 INFO L225 Difference]: With dead ends: 372 [2020-08-18 21:51:18,934 INFO L226 Difference]: Without dead ends: 204 [2020-08-18 21:51:18,939 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 [2020-08-18 21:51:18,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-08-18 21:51:19,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 169. [2020-08-18 21:51:19,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-18 21:51:19,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 201 transitions. [2020-08-18 21:51:19,065 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 201 transitions. Word has length 59 [2020-08-18 21:51:19,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:51:19,066 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 201 transitions. [2020-08-18 21:51:19,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:51:19,066 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 201 transitions. [2020-08-18 21:51:19,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 21:51:19,070 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:51:19,070 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:51:19,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:51:19,071 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:51:19,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:51:19,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1978801715, now seen corresponding path program 1 times [2020-08-18 21:51:19,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:51:19,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435375473] [2020-08-18 21:51:19,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:51:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:19,382 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:51:19,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:51:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:19,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:51:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:19,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:51:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:19,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:51:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:19,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:51:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:19,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:51:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:19,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 21:51:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:19,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:51:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:19,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 21:51:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:19,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 21:51:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:19,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 21:51:19,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435375473] [2020-08-18 21:51:19,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:51:19,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 21:51:19,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310069000] [2020-08-18 21:51:19,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 21:51:19,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:51:19,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 21:51:19,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:51:19,446 INFO L87 Difference]: Start difference. First operand 169 states and 201 transitions. Second operand 5 states. [2020-08-18 21:51:19,937 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:51:21,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:51:21,045 INFO L93 Difference]: Finished difference Result 311 states and 381 transitions. [2020-08-18 21:51:21,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 21:51:21,046 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-18 21:51:21,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:51:21,051 INFO L225 Difference]: With dead ends: 311 [2020-08-18 21:51:21,051 INFO L226 Difference]: Without dead ends: 194 [2020-08-18 21:51:21,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 21:51:21,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-08-18 21:51:21,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 160. [2020-08-18 21:51:21,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-08-18 21:51:21,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 189 transitions. [2020-08-18 21:51:21,136 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 189 transitions. Word has length 60 [2020-08-18 21:51:21,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:51:21,136 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 189 transitions. [2020-08-18 21:51:21,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 21:51:21,136 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 189 transitions. [2020-08-18 21:51:21,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 21:51:21,145 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:51:21,146 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] [2020-08-18 21:51:21,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:51:21,146 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:51:21,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:51:21,146 INFO L82 PathProgramCache]: Analyzing trace with hash -532508270, now seen corresponding path program 1 times [2020-08-18 21:51:21,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:51:21,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780637927] [2020-08-18 21:51:21,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:51:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:21,506 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:51:21,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:51:21,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:21,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:51:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:21,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:51:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:21,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:51:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:21,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:51:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:21,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:51:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:21,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:51:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:21,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:51:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:21,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 21:51:21,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:21,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 21:51:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:21,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 21:51:21,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780637927] [2020-08-18 21:51:21,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:51:21,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 21:51:21,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952897239] [2020-08-18 21:51:21,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:51:21,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:51:21,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:51:21,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:51:21,690 INFO L87 Difference]: Start difference. First operand 160 states and 189 transitions. Second operand 9 states. [2020-08-18 21:51:22,080 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:51:22,390 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:51:22,648 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:51:22,920 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:51:23,844 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:51:26,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:51:26,118 INFO L93 Difference]: Finished difference Result 533 states and 661 transitions. [2020-08-18 21:51:26,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 21:51:26,119 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-18 21:51:26,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:51:26,125 INFO L225 Difference]: With dead ends: 533 [2020-08-18 21:51:26,125 INFO L226 Difference]: Without dead ends: 401 [2020-08-18 21:51:26,127 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 [2020-08-18 21:51:26,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-08-18 21:51:26,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 340. [2020-08-18 21:51:26,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-08-18 21:51:26,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 414 transitions. [2020-08-18 21:51:26,209 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 414 transitions. Word has length 64 [2020-08-18 21:51:26,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:51:26,210 INFO L479 AbstractCegarLoop]: Abstraction has 340 states and 414 transitions. [2020-08-18 21:51:26,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:51:26,210 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 414 transitions. [2020-08-18 21:51:26,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 21:51:26,212 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:51:26,212 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] [2020-08-18 21:51:26,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 21:51:26,213 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:51:26,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:51:26,213 INFO L82 PathProgramCache]: Analyzing trace with hash 216340368, now seen corresponding path program 1 times [2020-08-18 21:51:26,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:51:26,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842258876] [2020-08-18 21:51:26,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:51:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:26,657 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:51:26,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:51:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:26,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:51:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:26,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:51:26,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:26,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:51:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:26,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:51:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:26,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:51:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:26,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:51:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:26,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 21:51:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:26,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:51:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:26,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 21:51:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:26,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:51:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:26,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 21:51:26,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842258876] [2020-08-18 21:51:26,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:51:26,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 21:51:26,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983439209] [2020-08-18 21:51:26,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:51:26,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:51:26,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:51:26,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:51:26,755 INFO L87 Difference]: Start difference. First operand 340 states and 414 transitions. Second operand 9 states. [2020-08-18 21:51:27,082 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:51:27,716 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:51:28,811 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:51:29,052 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:51:29,353 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:51:29,708 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:51:30,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:51:30,654 INFO L93 Difference]: Finished difference Result 875 states and 1130 transitions. [2020-08-18 21:51:30,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 21:51:30,655 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-18 21:51:30,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:51:30,664 INFO L225 Difference]: With dead ends: 875 [2020-08-18 21:51:30,665 INFO L226 Difference]: Without dead ends: 563 [2020-08-18 21:51:30,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 21:51:30,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-08-18 21:51:30,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 499. [2020-08-18 21:51:30,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2020-08-18 21:51:30,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 597 transitions. [2020-08-18 21:51:30,790 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 597 transitions. Word has length 70 [2020-08-18 21:51:30,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:51:30,791 INFO L479 AbstractCegarLoop]: Abstraction has 499 states and 597 transitions. [2020-08-18 21:51:30,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:51:30,791 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 597 transitions. [2020-08-18 21:51:30,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-18 21:51:30,793 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:51:30,793 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:51:30,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 21:51:30,794 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:51:30,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:51:30,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1357993179, now seen corresponding path program 1 times [2020-08-18 21:51:30,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:51:30,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870290202] [2020-08-18 21:51:30,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:51:30,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:31,135 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:51:31,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:51:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:31,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:51:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:31,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:51:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:31,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:51:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:31,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:51:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:31,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:51:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:31,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:51:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:31,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:51:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:31,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:51:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:31,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:51:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:31,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:51:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:31,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:51:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:31,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:51:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:31,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:51:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:31,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:51:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:31,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:51:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:31,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:51:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:31,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 21:51:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:31,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 21:51:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:31,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 21:51:31,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870290202] [2020-08-18 21:51:31,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:51:31,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 21:51:31,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166491421] [2020-08-18 21:51:31,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:51:31,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:51:31,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:51:31,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:51:31,332 INFO L87 Difference]: Start difference. First operand 499 states and 597 transitions. Second operand 9 states. [2020-08-18 21:51:32,361 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:51:32,627 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 21:51:32,888 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:51:33,193 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:51:34,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:51:34,162 INFO L93 Difference]: Finished difference Result 1060 states and 1356 transitions. [2020-08-18 21:51:34,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 21:51:34,162 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 112 [2020-08-18 21:51:34,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:51:34,166 INFO L225 Difference]: With dead ends: 1060 [2020-08-18 21:51:34,167 INFO L226 Difference]: Without dead ends: 589 [2020-08-18 21:51:34,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 21:51:34,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2020-08-18 21:51:34,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 512. [2020-08-18 21:51:34,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2020-08-18 21:51:34,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 611 transitions. [2020-08-18 21:51:34,304 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 611 transitions. Word has length 112 [2020-08-18 21:51:34,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:51:34,306 INFO L479 AbstractCegarLoop]: Abstraction has 512 states and 611 transitions. [2020-08-18 21:51:34,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:51:34,306 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 611 transitions. [2020-08-18 21:51:34,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-18 21:51:34,316 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:51:34,317 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:51:34,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 21:51:34,317 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:51:34,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:51:34,318 INFO L82 PathProgramCache]: Analyzing trace with hash 581168867, now seen corresponding path program 1 times [2020-08-18 21:51:34,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:51:34,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047166244] [2020-08-18 21:51:34,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:51:34,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:34,600 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:51:34,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:51:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:34,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:51:34,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:34,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:51:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:34,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:51:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:34,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:51:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:34,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:51:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:34,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:51:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:34,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:51:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:34,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:51:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:34,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:51:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:34,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:51:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:34,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:51:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:34,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:51:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:34,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:51:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:34,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:51:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:34,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:51:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:34,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:51:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:34,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 21:51:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:34,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 21:51:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:34,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 21:51:34,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047166244] [2020-08-18 21:51:34,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:51:34,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 21:51:34,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319611020] [2020-08-18 21:51:34,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 21:51:34,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:51:34,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 21:51:34,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 21:51:34,782 INFO L87 Difference]: Start difference. First operand 512 states and 611 transitions. Second operand 11 states. [2020-08-18 21:51:35,296 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:51:35,518 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:51:35,741 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:51:36,530 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:51:36,849 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:51:37,111 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:51:38,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:51:38,186 INFO L93 Difference]: Finished difference Result 1083 states and 1380 transitions. [2020-08-18 21:51:38,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 21:51:38,199 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 112 [2020-08-18 21:51:38,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:51:38,205 INFO L225 Difference]: With dead ends: 1083 [2020-08-18 21:51:38,206 INFO L226 Difference]: Without dead ends: 599 [2020-08-18 21:51:38,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 21:51:38,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2020-08-18 21:51:38,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 520. [2020-08-18 21:51:38,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2020-08-18 21:51:38,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 619 transitions. [2020-08-18 21:51:38,307 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 619 transitions. Word has length 112 [2020-08-18 21:51:38,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:51:38,307 INFO L479 AbstractCegarLoop]: Abstraction has 520 states and 619 transitions. [2020-08-18 21:51:38,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 21:51:38,308 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 619 transitions. [2020-08-18 21:51:38,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-18 21:51:38,311 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:51:38,311 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:51:38,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 21:51:38,312 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:51:38,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:51:38,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1350338882, now seen corresponding path program 1 times [2020-08-18 21:51:38,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:51:38,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484331067] [2020-08-18 21:51:38,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:51:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:38,584 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:51:38,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:51:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:38,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:51:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:38,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:51:38,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:38,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:51:38,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:38,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:51:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:38,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:51:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:38,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:51:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:38,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:51:38,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:38,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:51:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:38,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:51:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:38,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:51:38,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:38,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:51:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:38,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:51:38,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:38,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:51:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:38,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:51:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:38,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:51:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:38,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:51:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:38,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 21:51:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:38,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 21:51:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:38,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 21:51:38,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484331067] [2020-08-18 21:51:38,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:51:38,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 21:51:38,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106365686] [2020-08-18 21:51:38,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 21:51:38,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:51:38,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 21:51:38,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 21:51:38,838 INFO L87 Difference]: Start difference. First operand 520 states and 619 transitions. Second operand 7 states. [2020-08-18 21:51:39,164 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:51:39,702 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:51:42,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:51:42,241 INFO L93 Difference]: Finished difference Result 1571 states and 2020 transitions. [2020-08-18 21:51:42,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 21:51:42,241 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2020-08-18 21:51:42,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:51:42,249 INFO L225 Difference]: With dead ends: 1571 [2020-08-18 21:51:42,250 INFO L226 Difference]: Without dead ends: 1079 [2020-08-18 21:51:42,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 21:51:42,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2020-08-18 21:51:42,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1005. [2020-08-18 21:51:42,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2020-08-18 21:51:42,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1219 transitions. [2020-08-18 21:51:42,450 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1219 transitions. Word has length 112 [2020-08-18 21:51:42,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:51:42,451 INFO L479 AbstractCegarLoop]: Abstraction has 1005 states and 1219 transitions. [2020-08-18 21:51:42,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 21:51:42,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1219 transitions. [2020-08-18 21:51:42,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-08-18 21:51:42,459 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:51:42,459 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:51:42,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 21:51:42,460 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:51:42,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:51:42,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1975342852, now seen corresponding path program 1 times [2020-08-18 21:51:42,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:51:42,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187200805] [2020-08-18 21:51:42,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:51:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:42,860 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:51:42,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:51:42,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:42,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:51:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:42,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:51:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:42,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:51:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:42,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:51:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:42,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:51:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:42,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:51:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:42,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 21:51:42,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:42,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:51:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:42,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 21:51:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:42,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:51:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:43,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:51:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:43,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:51:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:43,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:51:43,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:43,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:51:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:43,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:51:43,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:43,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:51:43,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:43,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:51:43,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:43,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 21:51:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:43,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 21:51:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:43,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 21:51:43,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187200805] [2020-08-18 21:51:43,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:51:43,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 21:51:43,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968866353] [2020-08-18 21:51:43,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 21:51:43,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:51:43,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 21:51:43,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 21:51:43,088 INFO L87 Difference]: Start difference. First operand 1005 states and 1219 transitions. Second operand 12 states. [2020-08-18 21:51:43,484 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:51:44,153 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:51:44,854 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:51:45,181 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:51:45,464 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:51:45,767 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:51:46,053 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:51:48,456 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:51:48,780 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:51:49,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:51:49,669 INFO L93 Difference]: Finished difference Result 2851 states and 3676 transitions. [2020-08-18 21:51:49,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 21:51:49,670 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 116 [2020-08-18 21:51:49,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:51:49,684 INFO L225 Difference]: With dead ends: 2851 [2020-08-18 21:51:49,685 INFO L226 Difference]: Without dead ends: 2072 [2020-08-18 21:51:49,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 21:51:49,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2020-08-18 21:51:49,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 1772. [2020-08-18 21:51:49,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1772 states. [2020-08-18 21:51:50,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1772 states to 1772 states and 2130 transitions. [2020-08-18 21:51:50,002 INFO L78 Accepts]: Start accepts. Automaton has 1772 states and 2130 transitions. Word has length 116 [2020-08-18 21:51:50,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:51:50,003 INFO L479 AbstractCegarLoop]: Abstraction has 1772 states and 2130 transitions. [2020-08-18 21:51:50,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 21:51:50,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1772 states and 2130 transitions. [2020-08-18 21:51:50,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-08-18 21:51:50,008 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:51:50,008 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:51:50,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 21:51:50,009 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:51:50,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:51:50,010 INFO L82 PathProgramCache]: Analyzing trace with hash -283315442, now seen corresponding path program 1 times [2020-08-18 21:51:50,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:51:50,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485080100] [2020-08-18 21:51:50,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:51:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,305 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:51:50,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:51:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:51:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:51:50,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:51:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:51:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:51:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:51:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 21:51:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:51:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:51:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:51:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:51:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:51:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:51:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:51:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:51:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:51:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:51:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:51:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 21:51:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:51:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 21:51:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:51:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 21:51:50,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-18 21:51:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:51:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:51:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 21:51:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:51:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:51:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:51:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:51:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-18 21:51:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 21:51:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:51:50,625 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-08-18 21:51:50,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485080100] [2020-08-18 21:51:50,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:51:50,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 21:51:50,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383109618] [2020-08-18 21:51:50,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 21:51:50,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:51:50,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 21:51:50,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 21:51:50,627 INFO L87 Difference]: Start difference. First operand 1772 states and 2130 transitions. Second operand 16 states. [2020-08-18 21:51:51,098 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:51:51,465 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 21:51:51,737 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 21:51:51,996 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 21:51:52,669 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:51:53,009 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:51:53,415 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 21:51:53,716 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 21:51:55,210 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:51:55,785 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:51:56,096 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:51:56,433 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:51:57,029 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:51:57,444 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:51:58,213 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:51:58,515 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 21:51:59,095 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 21:51:59,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:51:59,950 INFO L93 Difference]: Finished difference Result 3775 states and 4672 transitions. [2020-08-18 21:51:59,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-18 21:51:59,956 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 193 [2020-08-18 21:51:59,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:51:59,969 INFO L225 Difference]: With dead ends: 3775 [2020-08-18 21:51:59,970 INFO L226 Difference]: Without dead ends: 2217 [2020-08-18 21:51:59,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=589, Invalid=2167, Unknown=0, NotChecked=0, Total=2756 [2020-08-18 21:51:59,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2217 states. [2020-08-18 21:52:00,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2217 to 2039. [2020-08-18 21:52:00,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2039 states. [2020-08-18 21:52:00,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 2400 transitions. [2020-08-18 21:52:00,427 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 2400 transitions. Word has length 193 [2020-08-18 21:52:00,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:52:00,429 INFO L479 AbstractCegarLoop]: Abstraction has 2039 states and 2400 transitions. [2020-08-18 21:52:00,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 21:52:00,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 2400 transitions. [2020-08-18 21:52:00,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-08-18 21:52:00,439 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:52:00,440 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:52:00,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 21:52:00,440 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:52:00,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:52:00,441 INFO L82 PathProgramCache]: Analyzing trace with hash -892886269, now seen corresponding path program 1 times [2020-08-18 21:52:00,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:52:00,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498309952] [2020-08-18 21:52:00,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:52:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:00,843 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:52:00,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:52:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:00,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:52:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:00,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:52:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:00,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:52:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:00,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:52:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:00,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:52:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:00,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:52:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:00,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 21:52:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:00,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:52:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:00,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:52:00,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:00,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:52:00,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:00,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:52:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:00,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:52:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:00,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:52:00,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:00,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:52:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:00,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:52:00,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:00,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:52:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:00,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:52:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:00,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:52:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 21:52:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:52:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:52:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:52:01,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:52:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:52:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 21:52:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:52:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:52:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 21:52:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:52:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:52:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:52:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:52:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 21:52:01,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:52:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-18 21:52:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:52:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:52:01,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:52:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 21:52:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:52:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:52:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 21:52:01,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 21:52:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:52:01,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-08-18 21:52:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:52:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-08-18 21:52:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:52:01,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:52:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:52:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:52:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:52:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:52:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:52:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:52:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 21:52:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-08-18 21:52:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:01,541 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 74 proven. 21 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2020-08-18 21:52:01,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498309952] [2020-08-18 21:52:01,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:52:01,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 21:52:01,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551141401] [2020-08-18 21:52:01,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 21:52:01,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:52:01,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 21:52:01,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-08-18 21:52:01,547 INFO L87 Difference]: Start difference. First operand 2039 states and 2400 transitions. Second operand 16 states. [2020-08-18 21:52:02,155 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:52:03,025 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:52:04,619 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:52:04,961 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:52:05,231 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:52:05,520 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:52:05,863 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:52:06,127 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:52:07,406 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2020-08-18 21:52:07,898 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2020-08-18 21:52:08,459 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 192 [2020-08-18 21:52:08,992 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 192 [2020-08-18 21:52:09,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:52:09,926 INFO L93 Difference]: Finished difference Result 5889 states and 7114 transitions. [2020-08-18 21:52:09,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-18 21:52:09,931 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 327 [2020-08-18 21:52:09,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:52:09,952 INFO L225 Difference]: With dead ends: 5889 [2020-08-18 21:52:09,952 INFO L226 Difference]: Without dead ends: 3886 [2020-08-18 21:52:09,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=376, Invalid=1346, Unknown=0, NotChecked=0, Total=1722 [2020-08-18 21:52:09,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3886 states. [2020-08-18 21:52:10,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3886 to 3783. [2020-08-18 21:52:10,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3783 states. [2020-08-18 21:52:10,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3783 states to 3783 states and 4382 transitions. [2020-08-18 21:52:10,720 INFO L78 Accepts]: Start accepts. Automaton has 3783 states and 4382 transitions. Word has length 327 [2020-08-18 21:52:10,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:52:10,723 INFO L479 AbstractCegarLoop]: Abstraction has 3783 states and 4382 transitions. [2020-08-18 21:52:10,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 21:52:10,723 INFO L276 IsEmpty]: Start isEmpty. Operand 3783 states and 4382 transitions. [2020-08-18 21:52:10,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-08-18 21:52:10,740 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:52:10,741 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, 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, 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] [2020-08-18 21:52:10,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 21:52:10,741 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:52:10,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:52:10,742 INFO L82 PathProgramCache]: Analyzing trace with hash 2050979555, now seen corresponding path program 1 times [2020-08-18 21:52:10,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:52:10,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574384027] [2020-08-18 21:52:10,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:52:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,131 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:52:11,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:52:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:52:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:52:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:52:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:52:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:52:11,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:52:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 21:52:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:52:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:52:11,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:52:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:52:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:52:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:52:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:52:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:52:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:52:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:52:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:52:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 21:52:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:52:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:52:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:52:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:52:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:52:11,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 21:52:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:52:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:52:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 21:52:11,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:52:11,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:52:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:52:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:52:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 21:52:11,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:52:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-08-18 21:52:11,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-08-18 21:52:11,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:52:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:52:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:52:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 21:52:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:52:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:52:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 21:52:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 21:52:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:52:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-18 21:52:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 21:52:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:52:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-08-18 21:52:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:52:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:52:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:52:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:52:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:52:11,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:52:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:52:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:52:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-08-18 21:52:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-18 21:52:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:11,683 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 89 proven. 3 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2020-08-18 21:52:11,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574384027] [2020-08-18 21:52:11,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:52:11,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 21:52:11,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196421748] [2020-08-18 21:52:11,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 21:52:11,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:52:11,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 21:52:11,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-08-18 21:52:11,688 INFO L87 Difference]: Start difference. First operand 3783 states and 4382 transitions. Second operand 19 states. [2020-08-18 21:52:12,361 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:52:12,725 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 193