/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:08:18,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:08:18,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:08:18,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:08:18,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:08:18,316 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:08:18,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:08:18,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:08:18,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:08:18,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:08:18,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:08:18,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:08:18,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:08:18,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:08:18,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:08:18,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:08:18,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:08:18,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:08:18,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:08:18,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:08:18,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:08:18,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:08:18,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:08:18,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:08:18,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:08:18,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:08:18,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:08:18,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:08:18,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:08:18,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:08:18,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:08:18,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:08:18,347 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:08:18,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:08:18,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:08:18,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:08:18,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:08:18,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:08:18,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:08:18,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:08:18,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:08:18,353 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 00:08:18,376 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:08:18,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:08:18,377 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:08:18,377 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:08:18,378 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:08:18,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:08:18,378 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:08:18,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:08:18,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:08:18,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:08:18,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:08:18,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:08:18,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:08:18,379 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:08:18,379 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:08:18,380 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:08:18,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:08:18,380 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:08:18,380 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:08:18,380 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:08:18,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:08:18,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:08:18,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:08:18,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:08:18,381 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:08:18,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:08:18,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:08:18,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:08:18,382 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:08:18,382 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:08:18,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:08:18,701 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:08:18,705 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:08:18,709 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:08:18,710 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:08:18,711 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product38.cil.c [2020-08-19 00:08:18,792 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/185b9247c/b2a693876f5742fdb6cc54278fb60b3e/FLAGf59785053 [2020-08-19 00:08:19,300 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:08:19,301 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product38.cil.c [2020-08-19 00:08:19,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/185b9247c/b2a693876f5742fdb6cc54278fb60b3e/FLAGf59785053 [2020-08-19 00:08:19,631 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/185b9247c/b2a693876f5742fdb6cc54278fb60b3e [2020-08-19 00:08:19,643 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:08:19,646 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:08:19,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:08:19,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:08:19,652 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:08:19,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:08:19" (1/1) ... [2020-08-19 00:08:19,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@302e0b1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:19, skipping insertion in model container [2020-08-19 00:08:19,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:08:19" (1/1) ... [2020-08-19 00:08:19,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:08:19,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:08:20,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:08:20,162 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:08:20,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:08:20,349 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:08:20,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:20 WrapperNode [2020-08-19 00:08:20,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:08:20,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:08:20,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:08:20,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:08:20,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:20" (1/1) ... [2020-08-19 00:08:20,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:20" (1/1) ... [2020-08-19 00:08:20,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:20" (1/1) ... [2020-08-19 00:08:20,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:20" (1/1) ... [2020-08-19 00:08:20,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:20" (1/1) ... [2020-08-19 00:08:20,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:20" (1/1) ... [2020-08-19 00:08:20,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:20" (1/1) ... [2020-08-19 00:08:20,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:08:20,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:08:20,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:08:20,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:08:20,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:08:20,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:08:20,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:08:20,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 00:08:20,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 00:08:20,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 00:08:20,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 00:08:20,529 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 00:08:20,529 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 00:08:20,529 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 00:08:20,529 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 00:08:20,529 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 00:08:20,530 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 00:08:20,530 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:08:20,530 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 00:08:20,530 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 00:08:20,530 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 00:08:20,530 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 00:08:20,531 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 00:08:20,531 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 00:08:20,531 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 00:08:20,531 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 00:08:20,531 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 00:08:20,531 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 00:08:20,532 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 00:08:20,532 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 00:08:20,532 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 00:08:20,532 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:08:20,532 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 00:08:20,532 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 00:08:20,533 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 00:08:20,533 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 00:08:20,533 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 00:08:20,533 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 00:08:20,533 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 00:08:20,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 00:08:20,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 00:08:20,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 00:08:20,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 00:08:20,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 00:08:20,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 00:08:20,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:08:20,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:08:20,535 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 00:08:20,535 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 00:08:20,535 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 00:08:20,535 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 00:08:20,535 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 00:08:20,536 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 00:08:20,536 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 00:08:20,536 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 00:08:20,536 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 00:08:20,536 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 00:08:20,536 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 00:08:20,537 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 00:08:20,537 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 00:08:20,537 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 00:08:20,537 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 00:08:20,537 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 00:08:20,537 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 00:08:20,537 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 00:08:20,538 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 00:08:20,538 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 00:08:20,538 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 00:08:20,538 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:08:20,538 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 00:08:20,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:08:20,538 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 00:08:20,539 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 00:08:20,539 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 00:08:20,539 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 00:08:20,539 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 00:08:20,539 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 00:08:20,539 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 00:08:20,540 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:08:20,540 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 00:08:20,540 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 00:08:20,540 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:08:20,540 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:08:20,540 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 00:08:20,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:08:20,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:08:20,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:08:20,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:08:20,541 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 00:08:20,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:08:20,541 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 00:08:20,542 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 00:08:20,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:08:20,542 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 00:08:20,542 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 00:08:20,542 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 00:08:20,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:08:20,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 00:08:20,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:08:23,725 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:08:23,725 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 00:08:23,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:08:23 BoogieIcfgContainer [2020-08-19 00:08:23,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:08:23,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:08:23,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:08:23,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:08:23,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:08:19" (1/3) ... [2020-08-19 00:08:23,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@487c3b7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:08:23, skipping insertion in model container [2020-08-19 00:08:23,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:20" (2/3) ... [2020-08-19 00:08:23,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@487c3b7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:08:23, skipping insertion in model container [2020-08-19 00:08:23,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:08:23" (3/3) ... [2020-08-19 00:08:23,740 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product38.cil.c [2020-08-19 00:08:23,750 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:08:23,758 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:08:23,772 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:08:23,797 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:08:23,797 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:08:23,798 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:08:23,798 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:08:23,798 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:08:23,798 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:08:23,799 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:08:23,799 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:08:23,821 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-19 00:08:23,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 00:08:23,830 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:23,831 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] [2020-08-19 00:08:23,832 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:23,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:23,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1698741088, now seen corresponding path program 1 times [2020-08-19 00:08:23,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:23,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444970373] [2020-08-19 00:08:23,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:24,451 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:24,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:24,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:24,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:24,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:24,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:24,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:24,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 00:08:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:24,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 00:08:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:24,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:08:24,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444970373] [2020-08-19 00:08:24,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:08:24,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:08:24,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920082664] [2020-08-19 00:08:24,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:08:24,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:24,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:08:24,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:08:24,583 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 4 states. [2020-08-19 00:08:25,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:08:25,769 INFO L93 Difference]: Finished difference Result 296 states and 387 transitions. [2020-08-19 00:08:25,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 00:08:25,771 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 00:08:25,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:08:25,787 INFO L225 Difference]: With dead ends: 296 [2020-08-19 00:08:25,787 INFO L226 Difference]: Without dead ends: 165 [2020-08-19 00:08:25,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:08:25,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-19 00:08:25,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-08-19 00:08:25,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-19 00:08:25,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 155 transitions. [2020-08-19 00:08:25,887 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 155 transitions. Word has length 51 [2020-08-19 00:08:25,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:08:25,888 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 155 transitions. [2020-08-19 00:08:25,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:08:25,889 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 155 transitions. [2020-08-19 00:08:25,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 00:08:25,892 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:25,893 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] [2020-08-19 00:08:25,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:08:25,893 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:25,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:25,894 INFO L82 PathProgramCache]: Analyzing trace with hash 160126664, now seen corresponding path program 1 times [2020-08-19 00:08:25,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:25,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572176036] [2020-08-19 00:08:25,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:26,349 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:26,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:26,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:26,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:26,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:26,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:26,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:26,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:08:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:26,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:08:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:26,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:08:26,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572176036] [2020-08-19 00:08:26,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:08:26,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 00:08:26,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970670255] [2020-08-19 00:08:26,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 00:08:26,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:26,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 00:08:26,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:08:26,468 INFO L87 Difference]: Start difference. First operand 132 states and 155 transitions. Second operand 5 states. [2020-08-19 00:08:26,948 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:08:27,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:08:27,756 INFO L93 Difference]: Finished difference Result 237 states and 294 transitions. [2020-08-19 00:08:27,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 00:08:27,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 00:08:27,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:08:27,767 INFO L225 Difference]: With dead ends: 237 [2020-08-19 00:08:27,767 INFO L226 Difference]: Without dead ends: 155 [2020-08-19 00:08:27,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:08:27,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-19 00:08:27,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2020-08-19 00:08:27,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-19 00:08:27,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions. [2020-08-19 00:08:27,816 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 52 [2020-08-19 00:08:27,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:08:27,817 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 143 transitions. [2020-08-19 00:08:27,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 00:08:27,817 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions. [2020-08-19 00:08:27,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 00:08:27,819 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:27,820 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] [2020-08-19 00:08:27,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:08:27,820 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:27,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:27,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1051645430, now seen corresponding path program 1 times [2020-08-19 00:08:27,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:27,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528017434] [2020-08-19 00:08:27,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:28,206 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:28,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:28,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:28,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:28,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:28,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:28,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:28,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:28,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 00:08:28,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:28,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 00:08:28,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:28,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:08:28,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528017434] [2020-08-19 00:08:28,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:08:28,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:08:28,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156266034] [2020-08-19 00:08:28,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:08:28,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:28,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:08:28,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:08:28,354 INFO L87 Difference]: Start difference. First operand 123 states and 143 transitions. Second operand 9 states. [2020-08-19 00:08:28,864 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:08:29,192 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:29,472 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:29,723 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:30,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:08:30,973 INFO L93 Difference]: Finished difference Result 250 states and 313 transitions. [2020-08-19 00:08:30,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 00:08:30,974 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-19 00:08:30,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:08:30,977 INFO L225 Difference]: With dead ends: 250 [2020-08-19 00:08:30,977 INFO L226 Difference]: Without dead ends: 155 [2020-08-19 00:08:30,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:08:30,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-19 00:08:31,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2020-08-19 00:08:31,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-19 00:08:31,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2020-08-19 00:08:31,027 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 57 [2020-08-19 00:08:31,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:08:31,028 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2020-08-19 00:08:31,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:08:31,028 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2020-08-19 00:08:31,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 00:08:31,030 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:31,031 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:08:31,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:08:31,031 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:31,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:31,031 INFO L82 PathProgramCache]: Analyzing trace with hash 23828646, now seen corresponding path program 1 times [2020-08-19 00:08:31,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:31,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934437632] [2020-08-19 00:08:31,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:31,312 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:31,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:31,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:31,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:31,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:31,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:31,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:31,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:08:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:31,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:31,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:31,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 00:08:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:31,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 00:08:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:31,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:08:31,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934437632] [2020-08-19 00:08:31,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:08:31,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 00:08:31,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198255867] [2020-08-19 00:08:31,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 00:08:31,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:31,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 00:08:31,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:08:31,424 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand 7 states. [2020-08-19 00:08:31,920 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:08:33,149 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:08:33,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:08:33,838 INFO L93 Difference]: Finished difference Result 349 states and 441 transitions. [2020-08-19 00:08:33,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 00:08:33,838 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-08-19 00:08:33,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:08:33,842 INFO L225 Difference]: With dead ends: 349 [2020-08-19 00:08:33,843 INFO L226 Difference]: Without dead ends: 254 [2020-08-19 00:08:33,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-19 00:08:33,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-19 00:08:33,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 205. [2020-08-19 00:08:33,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-08-19 00:08:33,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 235 transitions. [2020-08-19 00:08:33,892 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 235 transitions. Word has length 70 [2020-08-19 00:08:33,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:08:33,893 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 235 transitions. [2020-08-19 00:08:33,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 00:08:33,893 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 235 transitions. [2020-08-19 00:08:33,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 00:08:33,895 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:33,895 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:08:33,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:08:33,895 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:33,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:33,896 INFO L82 PathProgramCache]: Analyzing trace with hash 765865706, now seen corresponding path program 1 times [2020-08-19 00:08:33,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:33,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129552859] [2020-08-19 00:08:33,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:34,197 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:34,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:34,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:34,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:34,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:34,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:34,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:34,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:34,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:34,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:34,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:08:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:34,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:34,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:34,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:08:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:34,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:08:34,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:34,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 00:08:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:34,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 00:08:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:34,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:08:34,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129552859] [2020-08-19 00:08:34,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:08:34,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:08:34,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185312196] [2020-08-19 00:08:34,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:08:34,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:34,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:08:34,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:08:34,327 INFO L87 Difference]: Start difference. First operand 205 states and 235 transitions. Second operand 9 states. [2020-08-19 00:08:34,871 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:08:36,063 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:36,332 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:36,579 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:36,825 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:08:38,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:08:38,041 INFO L93 Difference]: Finished difference Result 611 states and 771 transitions. [2020-08-19 00:08:38,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 00:08:38,041 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-19 00:08:38,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:08:38,045 INFO L225 Difference]: With dead ends: 611 [2020-08-19 00:08:38,045 INFO L226 Difference]: Without dead ends: 434 [2020-08-19 00:08:38,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 00:08:38,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-08-19 00:08:38,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 358. [2020-08-19 00:08:38,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-08-19 00:08:38,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 410 transitions. [2020-08-19 00:08:38,133 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 410 transitions. Word has length 84 [2020-08-19 00:08:38,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:08:38,135 INFO L479 AbstractCegarLoop]: Abstraction has 358 states and 410 transitions. [2020-08-19 00:08:38,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:08:38,135 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 410 transitions. [2020-08-19 00:08:38,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 00:08:38,138 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:38,138 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:08:38,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:08:38,139 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:38,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:38,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1305842374, now seen corresponding path program 1 times [2020-08-19 00:08:38,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:38,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495315926] [2020-08-19 00:08:38,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:38,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:38,485 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:38,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:38,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:38,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:38,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:38,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:38,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:38,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:08:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:38,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:08:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:38,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:38,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:38,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:38,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:08:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:38,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:08:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:38,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 00:08:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:38,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 00:08:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:38,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:08:38,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495315926] [2020-08-19 00:08:38,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:08:38,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 00:08:38,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657880417] [2020-08-19 00:08:38,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:08:38,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:38,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:08:38,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:08:38,657 INFO L87 Difference]: Start difference. First operand 358 states and 410 transitions. Second operand 10 states. [2020-08-19 00:08:39,265 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:08:40,441 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:40,664 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:08:40,913 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:41,199 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:42,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:08:42,274 INFO L93 Difference]: Finished difference Result 802 states and 995 transitions. [2020-08-19 00:08:42,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 00:08:42,275 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-19 00:08:42,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:08:42,280 INFO L225 Difference]: With dead ends: 802 [2020-08-19 00:08:42,280 INFO L226 Difference]: Without dead ends: 472 [2020-08-19 00:08:42,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-19 00:08:42,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-08-19 00:08:42,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 357. [2020-08-19 00:08:42,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-08-19 00:08:42,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 407 transitions. [2020-08-19 00:08:42,363 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 407 transitions. Word has length 88 [2020-08-19 00:08:42,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:08:42,363 INFO L479 AbstractCegarLoop]: Abstraction has 357 states and 407 transitions. [2020-08-19 00:08:42,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:08:42,364 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 407 transitions. [2020-08-19 00:08:42,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-19 00:08:42,365 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:42,365 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:08:42,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:08:42,366 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:42,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:42,366 INFO L82 PathProgramCache]: Analyzing trace with hash -638509814, now seen corresponding path program 1 times [2020-08-19 00:08:42,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:42,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064751803] [2020-08-19 00:08:42,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:42,615 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:42,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:42,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:42,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:42,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:42,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:42,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:42,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:08:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:42,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:08:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:42,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:42,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:42,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:08:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:42,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:08:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:42,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 00:08:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:42,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 00:08:42,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:42,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:08:42,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064751803] [2020-08-19 00:08:42,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:08:42,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 00:08:42,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897882162] [2020-08-19 00:08:42,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:08:42,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:42,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:08:42,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:08:42,802 INFO L87 Difference]: Start difference. First operand 357 states and 407 transitions. Second operand 10 states. [2020-08-19 00:08:43,879 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:44,146 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 00:08:44,402 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:08:44,653 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:08:45,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:08:45,588 INFO L93 Difference]: Finished difference Result 805 states and 1004 transitions. [2020-08-19 00:08:45,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 00:08:45,589 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-19 00:08:45,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:08:45,592 INFO L225 Difference]: With dead ends: 805 [2020-08-19 00:08:45,593 INFO L226 Difference]: Without dead ends: 476 [2020-08-19 00:08:45,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:08:45,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-08-19 00:08:45,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 367. [2020-08-19 00:08:45,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-08-19 00:08:45,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 417 transitions. [2020-08-19 00:08:45,671 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 417 transitions. Word has length 89 [2020-08-19 00:08:45,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:08:45,672 INFO L479 AbstractCegarLoop]: Abstraction has 367 states and 417 transitions. [2020-08-19 00:08:45,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:08:45,672 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 417 transitions. [2020-08-19 00:08:45,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-19 00:08:45,674 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:45,674 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:08:45,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 00:08:45,674 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:45,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:45,675 INFO L82 PathProgramCache]: Analyzing trace with hash 63090060, now seen corresponding path program 1 times [2020-08-19 00:08:45,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:45,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140398379] [2020-08-19 00:08:45,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:45,922 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:45,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:45,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:45,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:45,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:45,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:45,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:45,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:45,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:46,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:08:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:46,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:08:46,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:46,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:46,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:46,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:46,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:08:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:46,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:08:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:46,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 00:08:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:46,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 00:08:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:46,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:08:46,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140398379] [2020-08-19 00:08:46,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:08:46,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 00:08:46,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976051527] [2020-08-19 00:08:46,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 00:08:46,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:46,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 00:08:46,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:08:46,159 INFO L87 Difference]: Start difference. First operand 367 states and 417 transitions. Second operand 12 states. [2020-08-19 00:08:47,130 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:47,385 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:08:47,637 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:08:48,353 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:08:48,607 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:08:48,862 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:08:49,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:08:49,928 INFO L93 Difference]: Finished difference Result 829 states and 1046 transitions. [2020-08-19 00:08:49,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 00:08:49,928 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2020-08-19 00:08:49,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:08:49,935 INFO L225 Difference]: With dead ends: 829 [2020-08-19 00:08:49,936 INFO L226 Difference]: Without dead ends: 490 [2020-08-19 00:08:49,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-19 00:08:49,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-08-19 00:08:50,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 375. [2020-08-19 00:08:50,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-08-19 00:08:50,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 425 transitions. [2020-08-19 00:08:50,042 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 425 transitions. Word has length 89 [2020-08-19 00:08:50,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:08:50,043 INFO L479 AbstractCegarLoop]: Abstraction has 375 states and 425 transitions. [2020-08-19 00:08:50,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 00:08:50,044 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 425 transitions. [2020-08-19 00:08:50,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-19 00:08:50,048 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:50,048 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:08:50,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 00:08:50,048 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:50,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:50,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1788570957, now seen corresponding path program 1 times [2020-08-19 00:08:50,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:50,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394436216] [2020-08-19 00:08:50,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:50,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:50,383 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:50,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:50,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:50,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:50,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:50,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:50,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:50,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:08:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:50,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:08:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:50,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:50,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:50,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:08:50,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:50,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:08:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:50,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 00:08:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:50,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 00:08:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:50,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:08:50,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394436216] [2020-08-19 00:08:50,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:08:50,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:08:50,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993042854] [2020-08-19 00:08:50,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:08:50,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:50,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:08:50,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:08:50,589 INFO L87 Difference]: Start difference. First operand 375 states and 425 transitions. Second operand 8 states. [2020-08-19 00:08:51,426 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:08:52,017 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:08:54,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:08:54,420 INFO L93 Difference]: Finished difference Result 1177 states and 1533 transitions. [2020-08-19 00:08:54,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 00:08:54,421 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-08-19 00:08:54,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:08:54,429 INFO L225 Difference]: With dead ends: 1177 [2020-08-19 00:08:54,429 INFO L226 Difference]: Without dead ends: 830 [2020-08-19 00:08:54,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-19 00:08:54,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2020-08-19 00:08:54,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 685. [2020-08-19 00:08:54,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 685 states. [2020-08-19 00:08:54,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 803 transitions. [2020-08-19 00:08:54,574 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 803 transitions. Word has length 89 [2020-08-19 00:08:54,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:08:54,576 INFO L479 AbstractCegarLoop]: Abstraction has 685 states and 803 transitions. [2020-08-19 00:08:54,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:08:54,576 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 803 transitions. [2020-08-19 00:08:54,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 00:08:54,579 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:54,579 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:08:54,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 00:08:54,579 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:54,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:54,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1370895219, now seen corresponding path program 1 times [2020-08-19 00:08:54,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:54,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821995856] [2020-08-19 00:08:54,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:54,869 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:54,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:54,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:54,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:54,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:54,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:54,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:54,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:08:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:54,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:08:54,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:54,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 00:08:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:54,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:54,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:54,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:08:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:54,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:08:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:54,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 00:08:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:54,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 00:08:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:54,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:08:54,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821995856] [2020-08-19 00:08:54,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:08:54,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:08:54,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346606584] [2020-08-19 00:08:54,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:08:54,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:54,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:08:54,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:08:54,991 INFO L87 Difference]: Start difference. First operand 685 states and 803 transitions. Second operand 8 states. [2020-08-19 00:08:55,572 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:08:58,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:08:58,119 INFO L93 Difference]: Finished difference Result 1357 states and 1763 transitions. [2020-08-19 00:08:58,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 00:08:58,125 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-19 00:08:58,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:08:58,134 INFO L225 Difference]: With dead ends: 1357 [2020-08-19 00:08:58,134 INFO L226 Difference]: Without dead ends: 1354 [2020-08-19 00:08:58,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-19 00:08:58,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2020-08-19 00:08:58,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1127. [2020-08-19 00:08:58,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1127 states. [2020-08-19 00:08:58,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1336 transitions. [2020-08-19 00:08:58,317 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1336 transitions. Word has length 93 [2020-08-19 00:08:58,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:08:58,317 INFO L479 AbstractCegarLoop]: Abstraction has 1127 states and 1336 transitions. [2020-08-19 00:08:58,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:08:58,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1336 transitions. [2020-08-19 00:08:58,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-19 00:08:58,322 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:58,322 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:08:58,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 00:08:58,323 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:58,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:58,323 INFO L82 PathProgramCache]: Analyzing trace with hash -669184687, now seen corresponding path program 1 times [2020-08-19 00:08:58,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:58,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96425410] [2020-08-19 00:08:58,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,646 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:58,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:58,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:08:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:08:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 00:08:58,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:08:58,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:08:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:08:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:08:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:08:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-19 00:08:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-19 00:08:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:08:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:59,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 00:08:59,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:59,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:59,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-19 00:08:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:59,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 00:08:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:59,058 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-19 00:08:59,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96425410] [2020-08-19 00:08:59,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:08:59,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 00:08:59,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18928203] [2020-08-19 00:08:59,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 00:08:59,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:59,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 00:08:59,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-19 00:08:59,063 INFO L87 Difference]: Start difference. First operand 1127 states and 1336 transitions. Second operand 19 states. [2020-08-19 00:08:59,904 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:09:00,267 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 00:09:00,534 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:09:00,778 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:09:01,500 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:09:02,668 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:03,037 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:04,471 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:04,774 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:05,063 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:05,338 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:05,598 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:05,865 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:06,167 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:06,431 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:07,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:09:07,396 INFO L93 Difference]: Finished difference Result 2141 states and 2612 transitions. [2020-08-19 00:09:07,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-19 00:09:07,397 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 152 [2020-08-19 00:09:07,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:09:07,406 INFO L225 Difference]: With dead ends: 2141 [2020-08-19 00:09:07,406 INFO L226 Difference]: Without dead ends: 1042 [2020-08-19 00:09:07,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=561, Invalid=2519, Unknown=0, NotChecked=0, Total=3080 [2020-08-19 00:09:07,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-08-19 00:09:07,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 906. [2020-08-19 00:09:07,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 906 states. [2020-08-19 00:09:07,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1027 transitions. [2020-08-19 00:09:07,585 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1027 transitions. Word has length 152 [2020-08-19 00:09:07,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:09:07,590 INFO L479 AbstractCegarLoop]: Abstraction has 906 states and 1027 transitions. [2020-08-19 00:09:07,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 00:09:07,590 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1027 transitions. [2020-08-19 00:09:07,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-19 00:09:07,596 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:09:07,596 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, 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] [2020-08-19 00:09:07,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 00:09:07,597 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:09:07,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:09:07,598 INFO L82 PathProgramCache]: Analyzing trace with hash 906656976, now seen corresponding path program 1 times [2020-08-19 00:09:07,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:09:07,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580322904] [2020-08-19 00:09:07,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:09:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:07,945 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:09:07,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:09:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:07,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:09:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:07,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:09:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:07,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:09:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:07,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:09:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:08,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:09:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:08,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:09:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:08,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:09:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:08,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 00:09:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:08,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:08,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:08,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:08,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:08,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:09:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:08,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:09:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:08,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:08,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:09:08,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:08,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-19 00:09:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:08,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:08,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:08,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:08,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:09:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:08,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-19 00:09:08,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:08,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 00:09:08,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:08,140 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-19 00:09:08,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580322904] [2020-08-19 00:09:08,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:09:08,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 00:09:08,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651535711] [2020-08-19 00:09:08,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 00:09:08,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:09:08,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 00:09:08,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-19 00:09:08,142 INFO L87 Difference]: Start difference. First operand 906 states and 1027 transitions. Second operand 13 states. [2020-08-19 00:09:08,813 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:09,063 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:09:09,302 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:09:10,359 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:09:11,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:09:11,678 INFO L93 Difference]: Finished difference Result 1616 states and 1930 transitions. [2020-08-19 00:09:11,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-19 00:09:11,679 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-19 00:09:11,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:09:11,680 INFO L225 Difference]: With dead ends: 1616 [2020-08-19 00:09:11,680 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 00:09:11,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2020-08-19 00:09:11,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 00:09:11,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 00:09:11,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 00:09:11,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 00:09:11,687 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 152 [2020-08-19 00:09:11,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:09:11,687 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 00:09:11,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 00:09:11,688 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 00:09:11,688 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 00:09:11,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 00:09:11,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 00:09:12,252 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 26 [2020-08-19 00:09:12,439 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 24 [2020-08-19 00:09:12,617 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 25 [2020-08-19 00:09:12,811 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 26 [2020-08-19 00:09:13,019 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 25 [2020-08-19 00:09:13,227 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 25 [2020-08-19 00:09:13,350 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 25 [2020-08-19 00:09:13,497 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 25 [2020-08-19 00:09:15,722 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 330 DAG size of output: 293 [2020-08-19 00:09:16,390 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 293