/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:06:25,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:06:25,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:06:25,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:06:25,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:06:25,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:06:25,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:06:25,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:06:25,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:06:25,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:06:25,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:06:25,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:06:25,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:06:25,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:06:25,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:06:25,273 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:06:25,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:06:25,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:06:25,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:06:25,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:06:25,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:06:25,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:06:25,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:06:25,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:06:25,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:06:25,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:06:25,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:06:25,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:06:25,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:06:25,289 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:06:25,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:06:25,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:06:25,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:06:25,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:06:25,293 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:06:25,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:06:25,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:06:25,294 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:06:25,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:06:25,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:06:25,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:06:25,297 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 02:06:25,324 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:06:25,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:06:25,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:06:25,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:06:25,326 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:06:25,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:06:25,327 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:06:25,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:06:25,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:06:25,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:06:25,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:06:25,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:06:25,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:06:25,328 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:06:25,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:06:25,329 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:06:25,329 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:06:25,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:06:25,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:06:25,329 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:06:25,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:06:25,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:06:25,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:06:25,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:06:25,330 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:06:25,331 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:06:25,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:06:25,331 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:06:25,331 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:06:25,331 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-08-22 02:06:25,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:06:25,646 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:06:25,649 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:06:25,651 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:06:25,651 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:06:25,652 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product47.cil.c [2020-08-22 02:06:25,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b770d60f7/57f2c026009d4b60b5f8eff73501fe3f/FLAG4b265008a [2020-08-22 02:06:26,219 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:06:26,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product47.cil.c [2020-08-22 02:06:26,234 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b770d60f7/57f2c026009d4b60b5f8eff73501fe3f/FLAG4b265008a [2020-08-22 02:06:26,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b770d60f7/57f2c026009d4b60b5f8eff73501fe3f [2020-08-22 02:06:26,571 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:06:26,572 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:06:26,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:06:26,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:06:26,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:06:26,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:06:26" (1/1) ... [2020-08-22 02:06:26,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fb0dbc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:26, skipping insertion in model container [2020-08-22 02:06:26,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:06:26" (1/1) ... [2020-08-22 02:06:26,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:06:26,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:06:27,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:06:27,116 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:06:27,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:06:27,234 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:06:27,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:27 WrapperNode [2020-08-22 02:06:27,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:06:27,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:06:27,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:06:27,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:06:27,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:27" (1/1) ... [2020-08-22 02:06:27,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:27" (1/1) ... [2020-08-22 02:06:27,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:27" (1/1) ... [2020-08-22 02:06:27,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:27" (1/1) ... [2020-08-22 02:06:27,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:27" (1/1) ... [2020-08-22 02:06:27,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:27" (1/1) ... [2020-08-22 02:06:27,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:27" (1/1) ... [2020-08-22 02:06:27,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:06:27,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:06:27,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:06:27,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:06:27,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:06:27,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:06:27,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:06:27,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 02:06:27,389 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 02:06:27,389 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 02:06:27,389 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 02:06:27,389 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 02:06:27,389 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:06:27,389 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 02:06:27,390 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 02:06:27,390 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 02:06:27,390 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 02:06:27,390 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 02:06:27,390 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-22 02:06:27,390 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 02:06:27,391 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 02:06:27,391 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 02:06:27,391 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 02:06:27,391 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 02:06:27,391 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 02:06:27,391 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 02:06:27,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 02:06:27,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 02:06:27,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 02:06:27,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 02:06:27,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 02:06:27,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 02:06:27,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 02:06:27,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 02:06:27,393 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 02:06:27,393 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 02:06:27,393 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 02:06:27,393 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 02:06:27,394 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 02:06:27,394 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 02:06:27,394 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 02:06:27,394 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 02:06:27,394 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 02:06:27,394 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 02:06:27,395 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 02:06:27,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:06:27,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:06:27,395 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 02:06:27,395 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 02:06:27,395 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 02:06:27,396 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 02:06:27,396 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 02:06:27,396 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 02:06:27,396 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 02:06:27,396 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 02:06:27,396 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 02:06:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 02:06:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 02:06:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 02:06:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 02:06:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:06:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 02:06:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 02:06:27,398 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 02:06:27,398 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 02:06:27,398 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 02:06:27,398 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 02:06:27,398 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 02:06:27,398 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 02:06:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 02:06:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 02:06:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 02:06:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 02:06:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 02:06:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 02:06:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-22 02:06:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:06:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 02:06:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 02:06:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 02:06:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 02:06:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 02:06:27,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 02:06:27,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:06:27,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 02:06:27,401 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 02:06:27,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:06:27,401 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 02:06:27,402 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 02:06:27,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:06:27,402 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 02:06:27,402 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 02:06:27,402 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 02:06:27,402 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 02:06:27,402 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 02:06:27,403 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 02:06:27,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:06:27,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 02:06:27,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:06:28,536 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:06:28,537 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 02:06:28,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:06:28 BoogieIcfgContainer [2020-08-22 02:06:28,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:06:28,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:06:28,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:06:28,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:06:28,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:06:26" (1/3) ... [2020-08-22 02:06:28,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd74406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:06:28, skipping insertion in model container [2020-08-22 02:06:28,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:27" (2/3) ... [2020-08-22 02:06:28,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd74406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:06:28, skipping insertion in model container [2020-08-22 02:06:28,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:06:28" (3/3) ... [2020-08-22 02:06:28,550 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product47.cil.c [2020-08-22 02:06:28,560 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:06:28,568 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:06:28,582 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:06:28,604 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:06:28,604 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:06:28,605 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:06:28,605 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:06:28,605 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:06:28,605 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:06:28,605 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:06:28,606 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:06:28,629 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-08-22 02:06:28,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 02:06:28,639 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:06:28,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:06:28,640 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:06:28,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:06:28,647 INFO L82 PathProgramCache]: Analyzing trace with hash -2007114508, now seen corresponding path program 1 times [2020-08-22 02:06:28,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:06:28,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568976951] [2020-08-22 02:06:28,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:06:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:29,321 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:06:29,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:06:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:29,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:06:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:29,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:06:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:29,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:06:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:29,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:06:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:29,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:06:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:29,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:06:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:29,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:06:29,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568976951] [2020-08-22 02:06:29,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:06:29,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:06:29,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220262521] [2020-08-22 02:06:29,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:06:29,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:06:29,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:06:29,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:06:29,488 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 3 states. [2020-08-22 02:06:30,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:06:30,741 INFO L93 Difference]: Finished difference Result 323 states and 421 transitions. [2020-08-22 02:06:30,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:06:30,743 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 02:06:30,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:06:30,759 INFO L225 Difference]: With dead ends: 323 [2020-08-22 02:06:30,759 INFO L226 Difference]: Without dead ends: 175 [2020-08-22 02:06:30,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:06:30,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-08-22 02:06:30,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 139. [2020-08-22 02:06:30,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-22 02:06:30,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2020-08-22 02:06:30,879 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 46 [2020-08-22 02:06:30,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:06:30,880 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2020-08-22 02:06:30,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:06:30,880 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2020-08-22 02:06:30,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 02:06:30,892 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:06:30,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:06:30,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:06:30,893 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:06:30,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:06:30,893 INFO L82 PathProgramCache]: Analyzing trace with hash 622418136, now seen corresponding path program 1 times [2020-08-22 02:06:30,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:06:30,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117912585] [2020-08-22 02:06:30,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:06:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:31,285 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:06:31,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:06:31,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:31,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:06:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:31,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:06:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:31,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:06:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:31,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:06:31,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:31,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:06:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:31,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 02:06:31,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:31,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:06:31,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117912585] [2020-08-22 02:06:31,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:06:31,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 02:06:31,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188093340] [2020-08-22 02:06:31,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 02:06:31,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:06:31,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 02:06:31,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:06:31,331 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand 4 states. [2020-08-22 02:06:31,738 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:32,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:06:32,666 INFO L93 Difference]: Finished difference Result 250 states and 304 transitions. [2020-08-22 02:06:32,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 02:06:32,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 02:06:32,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:06:32,673 INFO L225 Difference]: With dead ends: 250 [2020-08-22 02:06:32,674 INFO L226 Difference]: Without dead ends: 159 [2020-08-22 02:06:32,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:06:32,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-08-22 02:06:32,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 130. [2020-08-22 02:06:32,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-22 02:06:32,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 152 transitions. [2020-08-22 02:06:32,730 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 152 transitions. Word has length 47 [2020-08-22 02:06:32,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:06:32,731 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 152 transitions. [2020-08-22 02:06:32,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 02:06:32,731 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 152 transitions. [2020-08-22 02:06:32,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 02:06:32,733 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:06:32,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:06:32,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:06:32,734 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:06:32,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:06:32,734 INFO L82 PathProgramCache]: Analyzing trace with hash -943300313, now seen corresponding path program 1 times [2020-08-22 02:06:32,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:06:32,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370465716] [2020-08-22 02:06:32,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:06:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:33,078 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:06:33,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:06:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:33,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:06:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:33,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:06:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:33,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:06:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:33,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:06:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:33,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:06:33,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:33,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 02:06:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:33,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:06:33,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370465716] [2020-08-22 02:06:33,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:06:33,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 02:06:33,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914544300] [2020-08-22 02:06:33,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 02:06:33,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:06:33,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 02:06:33,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:06:33,212 INFO L87 Difference]: Start difference. First operand 130 states and 152 transitions. Second operand 8 states. [2020-08-22 02:06:33,566 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:06:33,868 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:06:34,139 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:06:34,368 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:06:35,118 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:37,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:06:37,029 INFO L93 Difference]: Finished difference Result 446 states and 552 transitions. [2020-08-22 02:06:37,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 02:06:37,030 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 02:06:37,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:06:37,035 INFO L225 Difference]: With dead ends: 446 [2020-08-22 02:06:37,036 INFO L226 Difference]: Without dead ends: 340 [2020-08-22 02:06:37,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 02:06:37,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-08-22 02:06:37,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 278. [2020-08-22 02:06:37,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-08-22 02:06:37,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 336 transitions. [2020-08-22 02:06:37,118 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 336 transitions. Word has length 51 [2020-08-22 02:06:37,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:06:37,119 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 336 transitions. [2020-08-22 02:06:37,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 02:06:37,119 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 336 transitions. [2020-08-22 02:06:37,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 02:06:37,121 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:06:37,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:06:37,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:06:37,121 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:06:37,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:06:37,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1373874698, now seen corresponding path program 1 times [2020-08-22 02:06:37,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:06:37,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93164599] [2020-08-22 02:06:37,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:06:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:37,495 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:06:37,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:06:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:37,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:06:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:37,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:06:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:37,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:06:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:37,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:06:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:37,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:06:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:37,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 02:06:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:37,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 02:06:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:37,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:06:37,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93164599] [2020-08-22 02:06:37,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:06:37,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 02:06:37,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043888059] [2020-08-22 02:06:37,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 02:06:37,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:06:37,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 02:06:37,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:06:37,652 INFO L87 Difference]: Start difference. First operand 278 states and 336 transitions. Second operand 12 states. [2020-08-22 02:06:38,170 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:06:38,467 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:06:38,714 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:06:38,964 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:06:39,565 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:40,374 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:06:40,782 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:06:41,120 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:06:41,436 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:06:41,684 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:06:42,124 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:06:42,497 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:06:42,769 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:06:44,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:06:44,723 INFO L93 Difference]: Finished difference Result 1133 states and 1552 transitions. [2020-08-22 02:06:44,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 02:06:44,724 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-22 02:06:44,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:06:44,732 INFO L225 Difference]: With dead ends: 1133 [2020-08-22 02:06:44,732 INFO L226 Difference]: Without dead ends: 879 [2020-08-22 02:06:44,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-22 02:06:44,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2020-08-22 02:06:44,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 782. [2020-08-22 02:06:44,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 782 states. [2020-08-22 02:06:44,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 994 transitions. [2020-08-22 02:06:44,913 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 994 transitions. Word has length 57 [2020-08-22 02:06:44,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:06:44,914 INFO L479 AbstractCegarLoop]: Abstraction has 782 states and 994 transitions. [2020-08-22 02:06:44,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 02:06:44,914 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 994 transitions. [2020-08-22 02:06:44,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 02:06:44,917 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:06:44,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:06:44,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 02:06:44,917 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:06:44,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:06:44,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1561170436, now seen corresponding path program 1 times [2020-08-22 02:06:44,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:06:44,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660849807] [2020-08-22 02:06:44,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:06:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:45,155 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:06:45,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:06:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:45,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:06:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:45,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:06:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:45,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:06:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:45,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:06:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:45,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:06:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:45,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:06:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:45,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 02:06:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:45,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 02:06:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:45,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:06:45,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660849807] [2020-08-22 02:06:45,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:06:45,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 02:06:45,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018175971] [2020-08-22 02:06:45,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 02:06:45,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:06:45,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 02:06:45,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 02:06:45,263 INFO L87 Difference]: Start difference. First operand 782 states and 994 transitions. Second operand 6 states. [2020-08-22 02:06:45,558 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:06:47,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:06:47,424 INFO L93 Difference]: Finished difference Result 1911 states and 2577 transitions. [2020-08-22 02:06:47,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 02:06:47,425 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-22 02:06:47,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:06:47,436 INFO L225 Difference]: With dead ends: 1911 [2020-08-22 02:06:47,436 INFO L226 Difference]: Without dead ends: 1153 [2020-08-22 02:06:47,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-22 02:06:47,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2020-08-22 02:06:47,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1066. [2020-08-22 02:06:47,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-08-22 02:06:47,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1328 transitions. [2020-08-22 02:06:47,784 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1328 transitions. Word has length 61 [2020-08-22 02:06:47,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:06:47,784 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 1328 transitions. [2020-08-22 02:06:47,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 02:06:47,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1328 transitions. [2020-08-22 02:06:47,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 02:06:47,789 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:06:47,790 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:06:47,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 02:06:47,790 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:06:47,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:06:47,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1580345337, now seen corresponding path program 1 times [2020-08-22 02:06:47,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:06:47,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027749218] [2020-08-22 02:06:47,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:06:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:48,198 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:06:48,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:06:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:48,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:06:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:48,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:06:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:48,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:06:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:48,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:06:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:48,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 02:06:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:48,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:06:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:48,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 02:06:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:48,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:48,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:48,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:48,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 02:06:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:48,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 02:06:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:48,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 02:06:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:48,400 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 02:06:48,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027749218] [2020-08-22 02:06:48,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:06:48,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 02:06:48,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116496386] [2020-08-22 02:06:48,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 02:06:48,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:06:48,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 02:06:48,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-22 02:06:48,405 INFO L87 Difference]: Start difference. First operand 1066 states and 1328 transitions. Second operand 10 states. [2020-08-22 02:06:48,994 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-22 02:06:49,572 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:06:51,405 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:06:52,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:06:52,959 INFO L93 Difference]: Finished difference Result 2035 states and 2637 transitions. [2020-08-22 02:06:52,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 02:06:52,960 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-22 02:06:52,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:06:52,971 INFO L225 Difference]: With dead ends: 2035 [2020-08-22 02:06:52,971 INFO L226 Difference]: Without dead ends: 1270 [2020-08-22 02:06:52,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-22 02:06:52,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2020-08-22 02:06:53,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1173. [2020-08-22 02:06:53,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1173 states. [2020-08-22 02:06:53,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1439 transitions. [2020-08-22 02:06:53,166 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1439 transitions. Word has length 88 [2020-08-22 02:06:53,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:06:53,167 INFO L479 AbstractCegarLoop]: Abstraction has 1173 states and 1439 transitions. [2020-08-22 02:06:53,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 02:06:53,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1439 transitions. [2020-08-22 02:06:53,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-22 02:06:53,172 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:06:53,172 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:06:53,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 02:06:53,173 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:06:53,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:06:53,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1992976932, now seen corresponding path program 1 times [2020-08-22 02:06:53,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:06:53,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844724603] [2020-08-22 02:06:53,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:06:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:53,528 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:06:53,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:06:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:53,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:06:53,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:53,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:06:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:53,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:06:53,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:53,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:06:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:53,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:06:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:53,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:53,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:53,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:53,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:53,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:06:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:53,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:53,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:53,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:06:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:53,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 02:06:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:53,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:53,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 02:06:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:53,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 02:06:53,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:53,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:53,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:53,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:06:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:53,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 02:06:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:53,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 02:06:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:53,733 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-22 02:06:53,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844724603] [2020-08-22 02:06:53,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:06:53,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 02:06:53,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107764054] [2020-08-22 02:06:53,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 02:06:53,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:06:53,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 02:06:53,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 02:06:53,741 INFO L87 Difference]: Start difference. First operand 1173 states and 1439 transitions. Second operand 10 states. [2020-08-22 02:06:54,678 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:54,929 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:06:55,200 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:55,455 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:56,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:06:56,408 INFO L93 Difference]: Finished difference Result 2475 states and 3246 transitions. [2020-08-22 02:06:56,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 02:06:56,414 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 141 [2020-08-22 02:06:56,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:06:56,423 INFO L225 Difference]: With dead ends: 2475 [2020-08-22 02:06:56,423 INFO L226 Difference]: Without dead ends: 1326 [2020-08-22 02:06:56,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 02:06:56,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2020-08-22 02:06:56,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1203. [2020-08-22 02:06:56,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2020-08-22 02:06:56,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1473 transitions. [2020-08-22 02:06:56,707 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1473 transitions. Word has length 141 [2020-08-22 02:06:56,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:06:56,708 INFO L479 AbstractCegarLoop]: Abstraction has 1203 states and 1473 transitions. [2020-08-22 02:06:56,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 02:06:56,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1473 transitions. [2020-08-22 02:06:56,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-22 02:06:56,712 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:06:56,713 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:06:56,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 02:06:56,713 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:06:56,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:06:56,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1964476642, now seen corresponding path program 1 times [2020-08-22 02:06:56,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:06:56,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148189874] [2020-08-22 02:06:56,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:06:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:57,006 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:06:57,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:06:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:57,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:06:57,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:57,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:06:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:57,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:06:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:57,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:06:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:57,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:06:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:57,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:57,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:57,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:57,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:57,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:06:57,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:57,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:57,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:57,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:06:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:57,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 02:06:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:57,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:57,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 02:06:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:57,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 02:06:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:57,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:57,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:57,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:06:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:57,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 02:06:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:57,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 02:06:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:57,223 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-22 02:06:57,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148189874] [2020-08-22 02:06:57,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:06:57,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 02:06:57,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621324549] [2020-08-22 02:06:57,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 02:06:57,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:06:57,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 02:06:57,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:06:57,226 INFO L87 Difference]: Start difference. First operand 1203 states and 1473 transitions. Second operand 12 states. [2020-08-22 02:06:57,723 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:06:57,958 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:58,185 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:58,809 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:59,091 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:59,321 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:07:00,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:07:00,472 INFO L93 Difference]: Finished difference Result 2205 states and 2787 transitions. [2020-08-22 02:07:00,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 02:07:00,473 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 141 [2020-08-22 02:07:00,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:07:00,482 INFO L225 Difference]: With dead ends: 2205 [2020-08-22 02:07:00,482 INFO L226 Difference]: Without dead ends: 1026 [2020-08-22 02:07:00,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 02:07:00,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-08-22 02:07:00,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 970. [2020-08-22 02:07:00,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-08-22 02:07:00,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1172 transitions. [2020-08-22 02:07:00,677 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1172 transitions. Word has length 141 [2020-08-22 02:07:00,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:07:00,677 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 1172 transitions. [2020-08-22 02:07:00,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 02:07:00,677 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1172 transitions. [2020-08-22 02:07:00,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-08-22 02:07:00,682 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:07:00,682 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:07:00,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 02:07:00,683 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:07:00,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:07:00,683 INFO L82 PathProgramCache]: Analyzing trace with hash -872576729, now seen corresponding path program 1 times [2020-08-22 02:07:00,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:07:00,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472989966] [2020-08-22 02:07:00,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:07:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:00,980 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:07:00,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:07:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:01,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:07:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:01,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:07:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:01,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:07:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:01,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:07:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:01,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 02:07:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:01,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:07:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:01,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:01,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:01,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:01,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:01,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:07:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:01,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:01,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:01,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:01,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:07:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:01,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 02:07:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:01,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:01,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 02:07:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:01,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 02:07:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:01,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:01,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:01,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:07:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:01,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 02:07:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:01,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 02:07:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:01,313 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-22 02:07:01,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472989966] [2020-08-22 02:07:01,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:07:01,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 02:07:01,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6704999] [2020-08-22 02:07:01,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 02:07:01,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:07:01,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 02:07:01,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-22 02:07:01,316 INFO L87 Difference]: Start difference. First operand 970 states and 1172 transitions. Second operand 13 states. [2020-08-22 02:07:01,977 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:07:02,816 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:07:04,184 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:04,537 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:04,804 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:05,054 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:07:05,393 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:07:05,650 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:07:06,664 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:06,909 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:07,186 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:07:07,433 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:07:08,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:07:08,182 INFO L93 Difference]: Finished difference Result 2803 states and 3512 transitions. [2020-08-22 02:07:08,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 02:07:08,183 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 145 [2020-08-22 02:07:08,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:07:08,194 INFO L225 Difference]: With dead ends: 2803 [2020-08-22 02:07:08,195 INFO L226 Difference]: Without dead ends: 1857 [2020-08-22 02:07:08,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 02:07:08,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2020-08-22 02:07:08,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 1755. [2020-08-22 02:07:08,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1755 states. [2020-08-22 02:07:08,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2091 transitions. [2020-08-22 02:07:08,538 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2091 transitions. Word has length 145 [2020-08-22 02:07:08,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:07:08,542 INFO L479 AbstractCegarLoop]: Abstraction has 1755 states and 2091 transitions. [2020-08-22 02:07:08,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 02:07:08,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2091 transitions. [2020-08-22 02:07:08,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-22 02:07:08,549 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:07:08,549 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:07:08,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 02:07:08,549 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:07:08,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:07:08,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1489780363, now seen corresponding path program 1 times [2020-08-22 02:07:08,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:07:08,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954256914] [2020-08-22 02:07:08,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:07:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:08,843 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:07:08,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:07:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:08,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:07:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:08,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:07:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:08,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:07:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:08,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:07:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:08,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 02:07:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:08,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 02:07:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:08,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:07:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:08,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:08,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:09,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:09,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:09,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:07:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:09,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:09,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:09,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:07:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:09,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 02:07:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:09,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:09,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-22 02:07:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:09,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 02:07:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:09,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:09,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:09,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:09,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:07:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:09,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 02:07:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:09,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 02:07:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:09,294 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-22 02:07:09,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954256914] [2020-08-22 02:07:09,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:07:09,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-22 02:07:09,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194200590] [2020-08-22 02:07:09,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-22 02:07:09,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:07:09,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-22 02:07:09,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-08-22 02:07:09,299 INFO L87 Difference]: Start difference. First operand 1755 states and 2091 transitions. Second operand 18 states. [2020-08-22 02:07:09,833 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:07:10,189 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:07:10,471 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:07:10,719 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:07:11,327 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:07:12,930 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:07:13,317 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:07:13,611 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:07:13,896 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:07:14,272 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:07:14,545 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:07:15,081 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 190 [2020-08-22 02:07:15,565 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 190 [2020-08-22 02:07:17,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:07:17,159 INFO L93 Difference]: Finished difference Result 3380 states and 4249 transitions. [2020-08-22 02:07:17,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-22 02:07:17,160 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 149 [2020-08-22 02:07:17,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:07:17,172 INFO L225 Difference]: With dead ends: 3380 [2020-08-22 02:07:17,172 INFO L226 Difference]: Without dead ends: 1959 [2020-08-22 02:07:17,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=364, Invalid=1442, Unknown=0, NotChecked=0, Total=1806 [2020-08-22 02:07:17,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2020-08-22 02:07:17,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1677. [2020-08-22 02:07:17,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1677 states. [2020-08-22 02:07:17,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1677 states to 1677 states and 1989 transitions. [2020-08-22 02:07:17,530 INFO L78 Accepts]: Start accepts. Automaton has 1677 states and 1989 transitions. Word has length 149 [2020-08-22 02:07:17,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:07:17,531 INFO L479 AbstractCegarLoop]: Abstraction has 1677 states and 1989 transitions. [2020-08-22 02:07:17,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-22 02:07:17,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1677 states and 1989 transitions. [2020-08-22 02:07:17,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-22 02:07:17,536 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:07:17,536 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:07:17,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 02:07:17,537 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:07:17,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:07:17,537 INFO L82 PathProgramCache]: Analyzing trace with hash -913393781, now seen corresponding path program 2 times [2020-08-22 02:07:17,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:07:17,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592189965] [2020-08-22 02:07:17,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:07:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:17,815 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:07:17,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:07:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:17,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:07:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:17,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:07:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:17,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:07:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:17,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:07:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:17,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 02:07:17,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:17,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:07:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:17,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:17,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:17,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:17,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:17,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:07:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:17,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:17,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:17,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:07:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:17,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 02:07:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:17,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:17,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 02:07:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:17,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-22 02:07:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:17,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 02:07:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:17,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:17,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:17,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:07:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:17,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 02:07:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:17,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 02:07:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:17,964 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-08-22 02:07:17,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592189965] [2020-08-22 02:07:17,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:07:17,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 02:07:17,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620254649] [2020-08-22 02:07:17,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 02:07:17,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:07:17,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 02:07:17,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-22 02:07:17,967 INFO L87 Difference]: Start difference. First operand 1677 states and 1989 transitions. Second operand 11 states. [2020-08-22 02:07:18,349 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:07:20,412 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:20,656 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:07:20,942 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:21,217 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:21,481 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:07:22,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:07:22,094 INFO L93 Difference]: Finished difference Result 1987 states and 2521 transitions. [2020-08-22 02:07:22,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 02:07:22,095 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 149 [2020-08-22 02:07:22,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:07:22,107 INFO L225 Difference]: With dead ends: 1987 [2020-08-22 02:07:22,107 INFO L226 Difference]: Without dead ends: 1984 [2020-08-22 02:07:22,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2020-08-22 02:07:22,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2020-08-22 02:07:22,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 1677. [2020-08-22 02:07:22,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1677 states. [2020-08-22 02:07:22,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1677 states to 1677 states and 1979 transitions. [2020-08-22 02:07:22,425 INFO L78 Accepts]: Start accepts. Automaton has 1677 states and 1979 transitions. Word has length 149 [2020-08-22 02:07:22,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:07:22,428 INFO L479 AbstractCegarLoop]: Abstraction has 1677 states and 1979 transitions. [2020-08-22 02:07:22,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 02:07:22,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1677 states and 1979 transitions. [2020-08-22 02:07:22,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-22 02:07:22,433 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:07:22,433 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:07:22,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 02:07:22,434 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:07:22,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:07:22,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1994425787, now seen corresponding path program 1 times [2020-08-22 02:07:22,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:07:22,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200179237] [2020-08-22 02:07:22,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:07:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:22,709 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:07:22,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:07:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:22,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:07:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:22,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:07:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:22,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:07:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:22,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:07:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:22,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 02:07:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:22,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:07:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:22,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:22,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:22,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:22,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:22,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:07:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:22,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:22,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:22,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:22,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:07:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:22,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 02:07:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:22,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:22,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 02:07:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:22,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 02:07:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:22,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:22,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:22,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:07:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:22,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:22,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 02:07:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:22,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 02:07:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:22,941 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 02:07:22,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200179237] [2020-08-22 02:07:22,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:07:22,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 02:07:22,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022764483] [2020-08-22 02:07:22,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 02:07:22,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:07:22,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 02:07:22,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:07:22,944 INFO L87 Difference]: Start difference. First operand 1677 states and 1979 transitions. Second operand 12 states. [2020-08-22 02:07:23,412 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:07:24,290 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:07:24,586 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:07:24,897 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:07:25,153 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186