/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:36:33,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:36:33,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:36:33,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:36:33,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:36:33,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:36:33,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:36:33,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:36:33,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:36:33,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:36:33,351 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:36:33,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:36:33,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:36:33,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:36:33,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:36:33,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:36:33,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:36:33,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:36:33,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:36:33,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:36:33,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:36:33,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:36:33,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:36:33,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:36:33,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 15:36:33,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 15:36:33,396 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 15:36:33,397 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 15:36:33,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 15:36:33,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 15:36:33,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 15:36:33,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 15:36:33,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 15:36:33,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 15:36:33,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 15:36:33,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 15:36:33,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 15:36:33,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 15:36:33,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:36:33,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:36:33,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:36:33,414 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 [2020-08-21 15:36:33,435 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:36:33,435 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:36:33,436 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:36:33,436 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:36:33,437 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:36:33,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:36:33,437 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:36:33,437 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:36:33,437 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:36:33,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:36:33,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:36:33,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:36:33,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:36:33,438 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:36:33,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:36:33,439 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:36:33,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:36:33,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:36:33,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:36:33,440 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:36:33,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:36:33,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:36:33,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:36:33,440 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:36:33,440 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:36:33,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:36:33,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:36:33,441 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:36:33,441 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:36:33,441 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 15:36:33,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:36:33,739 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:36:33,745 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:36:33,747 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:36:33,749 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:36:33,749 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c [2020-08-21 15:36:33,815 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4cfd0cf4/b4bc6e94a08b447b826067e89ffec97a/FLAGcd9b0adfa [2020-08-21 15:36:34,355 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:36:34,356 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c [2020-08-21 15:36:34,370 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4cfd0cf4/b4bc6e94a08b447b826067e89ffec97a/FLAGcd9b0adfa [2020-08-21 15:36:34,704 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4cfd0cf4/b4bc6e94a08b447b826067e89ffec97a [2020-08-21 15:36:34,714 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:36:34,715 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:36:34,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:36:34,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:36:34,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:36:34,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:36:34" (1/1) ... [2020-08-21 15:36:34,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17866592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:34, skipping insertion in model container [2020-08-21 15:36:34,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:36:34" (1/1) ... [2020-08-21 15:36:34,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:36:34,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:36:35,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:36:35,227 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:36:35,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:36:35,349 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:36:35,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:35 WrapperNode [2020-08-21 15:36:35,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:36:35,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:36:35,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:36:35,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:36:35,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:35" (1/1) ... [2020-08-21 15:36:35,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:35" (1/1) ... [2020-08-21 15:36:35,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:35" (1/1) ... [2020-08-21 15:36:35,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:35" (1/1) ... [2020-08-21 15:36:35,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:35" (1/1) ... [2020-08-21 15:36:35,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:35" (1/1) ... [2020-08-21 15:36:35,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:35" (1/1) ... [2020-08-21 15:36:35,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:36:35,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:36:35,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:36:35,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:36:35,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:35" (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 [2020-08-21 15:36:35,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:36:35,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:36:35,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 15:36:35,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 15:36:35,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 15:36:35,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 15:36:35,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 15:36:35,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 15:36:35,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 15:36:35,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 15:36:35,521 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 15:36:35,521 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 15:36:35,521 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 15:36:35,522 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 15:36:35,522 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:36:35,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 15:36:35,522 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 15:36:35,522 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 15:36:35,522 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 15:36:35,523 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 15:36:35,523 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 15:36:35,523 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 15:36:35,523 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 15:36:35,523 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 15:36:35,523 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 15:36:35,523 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 15:36:35,524 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 15:36:35,524 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 15:36:35,524 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 15:36:35,524 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 15:36:35,524 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 15:36:35,524 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 15:36:35,525 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 15:36:35,525 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 15:36:35,525 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 15:36:35,525 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 15:36:35,525 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 15:36:35,525 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 15:36:35,525 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 15:36:35,526 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 15:36:35,526 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 15:36:35,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:36:35,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:36:35,526 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 15:36:35,526 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 15:36:35,526 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 15:36:35,527 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 15:36:35,527 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 15:36:35,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 15:36:35,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 15:36:35,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 15:36:35,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 15:36:35,528 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 15:36:35,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:36:35,528 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 15:36:35,528 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 15:36:35,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 15:36:35,528 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 15:36:35,528 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 15:36:35,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:36:35,529 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 15:36:35,529 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 15:36:35,529 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 15:36:35,529 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 15:36:35,529 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 15:36:35,529 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 15:36:35,530 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 15:36:35,530 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 15:36:35,530 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 15:36:35,530 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 15:36:35,530 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 15:36:35,530 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 15:36:35,530 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 15:36:35,531 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 15:36:35,531 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 15:36:35,531 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 15:36:35,531 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 15:36:35,531 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:36:35,531 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 15:36:35,532 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 15:36:35,532 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 15:36:35,532 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 15:36:35,532 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 15:36:35,532 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 15:36:35,532 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 15:36:35,532 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 15:36:35,533 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 15:36:35,533 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 15:36:35,533 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 15:36:35,533 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 15:36:35,533 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 15:36:35,533 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 15:36:35,533 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 15:36:35,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:36:35,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 15:36:35,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:36:36,654 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:36:36,655 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 15:36:36,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:36:36 BoogieIcfgContainer [2020-08-21 15:36:36,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:36:36,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:36:36,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:36:36,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:36:36,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:36:34" (1/3) ... [2020-08-21 15:36:36,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5803515a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:36:36, skipping insertion in model container [2020-08-21 15:36:36,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:35" (2/3) ... [2020-08-21 15:36:36,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5803515a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:36:36, skipping insertion in model container [2020-08-21 15:36:36,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:36:36" (3/3) ... [2020-08-21 15:36:36,669 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product50.cil.c [2020-08-21 15:36:36,679 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:36:36,688 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:36:36,702 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:36:36,729 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:36:36,729 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:36:36,730 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:36:36,730 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:36:36,730 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:36:36,730 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:36:36,730 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:36:36,731 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:36:36,755 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-21 15:36:36,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 15:36:36,768 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:36:36,773 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:36:36,774 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:36:36,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:36:36,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1488722281, now seen corresponding path program 1 times [2020-08-21 15:36:36,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:36:36,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262220700] [2020-08-21 15:36:36,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:36:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:37,490 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:36:37,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:36:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:37,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:36:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:37,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:36:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:37,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:36:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:37,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:36:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:37,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:36:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:37,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:36:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:37,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:36:37,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262220700] [2020-08-21 15:36:37,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:36:37,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:36:37,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72555384] [2020-08-21 15:36:37,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:36:37,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:36:37,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:36:37,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:36:37,600 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 3 states. [2020-08-21 15:36:38,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:36:38,801 INFO L93 Difference]: Finished difference Result 306 states and 398 transitions. [2020-08-21 15:36:38,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:36:38,804 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 15:36:38,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:36:38,819 INFO L225 Difference]: With dead ends: 306 [2020-08-21 15:36:38,819 INFO L226 Difference]: Without dead ends: 165 [2020-08-21 15:36:38,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:36:38,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-21 15:36:38,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-08-21 15:36:38,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-21 15:36:38,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 154 transitions. [2020-08-21 15:36:38,909 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 154 transitions. Word has length 46 [2020-08-21 15:36:38,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:36:38,910 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 154 transitions. [2020-08-21 15:36:38,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:36:38,910 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 154 transitions. [2020-08-21 15:36:38,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 15:36:38,914 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:36:38,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:36:38,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:36:38,915 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:36:38,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:36:38,915 INFO L82 PathProgramCache]: Analyzing trace with hash 469599371, now seen corresponding path program 1 times [2020-08-21 15:36:38,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:36:38,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910540515] [2020-08-21 15:36:38,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:36:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:39,226 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:36:39,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:36:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:39,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:36:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:39,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:36:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:39,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:36:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:39,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:36:39,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:39,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:36:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:39,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 15:36:39,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:39,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:36:39,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910540515] [2020-08-21 15:36:39,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:36:39,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 15:36:39,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331255311] [2020-08-21 15:36:39,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 15:36:39,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:36:39,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 15:36:39,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:36:39,270 INFO L87 Difference]: Start difference. First operand 132 states and 154 transitions. Second operand 4 states. [2020-08-21 15:36:39,693 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:36:40,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:36:40,440 INFO L93 Difference]: Finished difference Result 235 states and 285 transitions. [2020-08-21 15:36:40,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 15:36:40,441 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 15:36:40,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:36:40,445 INFO L225 Difference]: With dead ends: 235 [2020-08-21 15:36:40,445 INFO L226 Difference]: Without dead ends: 149 [2020-08-21 15:36:40,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:36:40,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-21 15:36:40,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-21 15:36:40,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-21 15:36:40,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2020-08-21 15:36:40,505 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 47 [2020-08-21 15:36:40,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:36:40,505 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2020-08-21 15:36:40,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 15:36:40,505 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2020-08-21 15:36:40,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 15:36:40,507 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:36:40,508 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] [2020-08-21 15:36:40,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:36:40,508 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:36:40,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:36:40,508 INFO L82 PathProgramCache]: Analyzing trace with hash 305445596, now seen corresponding path program 1 times [2020-08-21 15:36:40,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:36:40,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585289082] [2020-08-21 15:36:40,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:36:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,807 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:36:40,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:36:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:36:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:36:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:36:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:36:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:36:40,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 15:36:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:36:40,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585289082] [2020-08-21 15:36:40,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:36:40,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 15:36:40,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344062975] [2020-08-21 15:36:40,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 15:36:40,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:36:40,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 15:36:40,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:36:40,895 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand 8 states. [2020-08-21 15:36:41,221 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:36:41,548 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:41,796 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:42,037 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:43,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:36:43,245 INFO L93 Difference]: Finished difference Result 248 states and 303 transitions. [2020-08-21 15:36:43,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 15:36:43,246 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-21 15:36:43,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:36:43,249 INFO L225 Difference]: With dead ends: 248 [2020-08-21 15:36:43,250 INFO L226 Difference]: Without dead ends: 149 [2020-08-21 15:36:43,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:36:43,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-21 15:36:43,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-21 15:36:43,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-21 15:36:43,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 141 transitions. [2020-08-21 15:36:43,288 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 141 transitions. Word has length 52 [2020-08-21 15:36:43,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:36:43,289 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 141 transitions. [2020-08-21 15:36:43,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 15:36:43,289 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 141 transitions. [2020-08-21 15:36:43,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 15:36:43,292 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:36:43,292 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] [2020-08-21 15:36:43,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:36:43,293 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:36:43,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:36:43,293 INFO L82 PathProgramCache]: Analyzing trace with hash 892474279, now seen corresponding path program 1 times [2020-08-21 15:36:43,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:36:43,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507784264] [2020-08-21 15:36:43,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:36:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,611 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:36:43,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:36:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:36:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:36:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:36:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:36:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 15:36:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:43,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 15:36:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 15:36:43,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:36:43,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507784264] [2020-08-21 15:36:43,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:36:43,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 15:36:43,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862664129] [2020-08-21 15:36:43,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 15:36:43,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:36:43,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 15:36:43,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 15:36:43,747 INFO L87 Difference]: Start difference. First operand 123 states and 141 transitions. Second operand 6 states. [2020-08-21 15:36:44,053 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:36:45,151 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:36:45,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:36:45,824 INFO L93 Difference]: Finished difference Result 345 states and 425 transitions. [2020-08-21 15:36:45,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 15:36:45,825 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-21 15:36:45,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:36:45,829 INFO L225 Difference]: With dead ends: 345 [2020-08-21 15:36:45,829 INFO L226 Difference]: Without dead ends: 246 [2020-08-21 15:36:45,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 15:36:45,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-08-21 15:36:45,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 203. [2020-08-21 15:36:45,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-08-21 15:36:45,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 230 transitions. [2020-08-21 15:36:45,886 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 230 transitions. Word has length 65 [2020-08-21 15:36:45,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:36:45,887 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 230 transitions. [2020-08-21 15:36:45,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 15:36:45,887 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 230 transitions. [2020-08-21 15:36:45,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 15:36:45,889 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:36:45,890 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] [2020-08-21 15:36:45,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 15:36:45,890 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:36:45,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:36:45,891 INFO L82 PathProgramCache]: Analyzing trace with hash 861206730, now seen corresponding path program 1 times [2020-08-21 15:36:45,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:36:45,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286330254] [2020-08-21 15:36:45,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:36:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:46,158 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:36:46,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:36:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:46,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:36:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:46,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:36:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:46,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:36:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:46,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:36:46,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:46,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 15:36:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:46,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:46,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:46,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:46,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:36:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:46,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 15:36:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:46,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 15:36:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:46,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:36:46,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286330254] [2020-08-21 15:36:46,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:36:46,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 15:36:46,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660197410] [2020-08-21 15:36:46,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 15:36:46,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:36:46,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 15:36:46,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:36:46,316 INFO L87 Difference]: Start difference. First operand 203 states and 230 transitions. Second operand 12 states. [2020-08-21 15:36:46,700 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:36:47,008 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:47,266 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:47,490 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:48,020 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:36:48,939 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:49,235 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:36:49,461 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:36:49,692 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:36:49,986 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:36:50,237 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:36:51,552 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:36:51,889 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:52,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:36:52,464 INFO L93 Difference]: Finished difference Result 713 states and 919 transitions. [2020-08-21 15:36:52,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 15:36:52,465 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-08-21 15:36:52,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:36:52,475 INFO L225 Difference]: With dead ends: 713 [2020-08-21 15:36:52,475 INFO L226 Difference]: Without dead ends: 534 [2020-08-21 15:36:52,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 15:36:52,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-08-21 15:36:52,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 472. [2020-08-21 15:36:52,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-08-21 15:36:52,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 553 transitions. [2020-08-21 15:36:52,598 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 553 transitions. Word has length 79 [2020-08-21 15:36:52,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:36:52,599 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 553 transitions. [2020-08-21 15:36:52,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 15:36:52,599 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 553 transitions. [2020-08-21 15:36:52,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-21 15:36:52,604 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:36:52,605 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:36:52,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 15:36:52,605 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:36:52,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:36:52,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1327678130, now seen corresponding path program 1 times [2020-08-21 15:36:52,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:36:52,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924974677] [2020-08-21 15:36:52,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:36:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:52,905 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:36:52,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:36:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:52,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:36:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:52,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:36:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:52,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:36:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:52,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:36:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:53,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 15:36:53,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:53,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 15:36:53,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:53,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:53,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:53,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:53,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:53,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:53,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:36:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:53,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:36:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:53,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:53,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 15:36:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:53,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 15:36:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:53,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 15:36:53,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:53,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:53,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:53,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:36:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:53,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-21 15:36:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:53,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-21 15:36:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:53,203 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-21 15:36:53,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924974677] [2020-08-21 15:36:53,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:36:53,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 15:36:53,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957174705] [2020-08-21 15:36:53,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 15:36:53,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:36:53,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 15:36:53,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 15:36:53,206 INFO L87 Difference]: Start difference. First operand 472 states and 553 transitions. Second operand 13 states. [2020-08-21 15:36:53,607 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:36:54,238 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:36:54,820 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:36:55,123 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 15:36:55,407 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:36:55,670 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:36:55,933 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:36:56,225 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 15:36:56,525 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:36:56,811 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:36:58,333 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:58,594 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:36:58,858 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:36:59,106 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:36:59,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:36:59,549 INFO L93 Difference]: Finished difference Result 957 states and 1212 transitions. [2020-08-21 15:36:59,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-21 15:36:59,550 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 138 [2020-08-21 15:36:59,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:36:59,554 INFO L225 Difference]: With dead ends: 957 [2020-08-21 15:36:59,554 INFO L226 Difference]: Without dead ends: 509 [2020-08-21 15:36:59,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-21 15:36:59,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2020-08-21 15:36:59,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 442. [2020-08-21 15:36:59,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-08-21 15:36:59,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 521 transitions. [2020-08-21 15:36:59,643 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 521 transitions. Word has length 138 [2020-08-21 15:36:59,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:36:59,643 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 521 transitions. [2020-08-21 15:36:59,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 15:36:59,643 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 521 transitions. [2020-08-21 15:36:59,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-21 15:36:59,646 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:36:59,646 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:36:59,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 15:36:59,647 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:36:59,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:36:59,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1681399932, now seen corresponding path program 1 times [2020-08-21 15:36:59,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:36:59,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187647124] [2020-08-21 15:36:59,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:36:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,911 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:36:59,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:36:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:36:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:36:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:36:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:36:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:36:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:00,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:00,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:37:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:00,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:37:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:00,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:00,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 15:37:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:00,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 15:37:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:00,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:00,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:00,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:00,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:37:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:00,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 15:37:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:00,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 15:37:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:00,110 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 15:37:00,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187647124] [2020-08-21 15:37:00,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:37:00,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 15:37:00,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953880796] [2020-08-21 15:37:00,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 15:37:00,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:37:00,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 15:37:00,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:37:00,114 INFO L87 Difference]: Start difference. First operand 442 states and 521 transitions. Second operand 12 states. [2020-08-21 15:37:00,920 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:01,168 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:01,397 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:01,977 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:02,222 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:02,453 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:03,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:37:03,380 INFO L93 Difference]: Finished difference Result 807 states and 985 transitions. [2020-08-21 15:37:03,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 15:37:03,383 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-08-21 15:37:03,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:37:03,386 INFO L225 Difference]: With dead ends: 807 [2020-08-21 15:37:03,386 INFO L226 Difference]: Without dead ends: 389 [2020-08-21 15:37:03,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 15:37:03,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-08-21 15:37:03,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 363. [2020-08-21 15:37:03,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-08-21 15:37:03,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 425 transitions. [2020-08-21 15:37:03,455 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 425 transitions. Word has length 130 [2020-08-21 15:37:03,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:37:03,456 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 425 transitions. [2020-08-21 15:37:03,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 15:37:03,456 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 425 transitions. [2020-08-21 15:37:03,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-21 15:37:03,458 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:37:03,458 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:37:03,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 15:37:03,459 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:37:03,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:37:03,459 INFO L82 PathProgramCache]: Analyzing trace with hash 34208085, now seen corresponding path program 1 times [2020-08-21 15:37:03,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:37:03,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209052945] [2020-08-21 15:37:03,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:37:03,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,695 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:37:03,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:37:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:37:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:37:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:37:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:37:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 15:37:03,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 15:37:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:03,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:37:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:37:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 15:37:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-21 15:37:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:03,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:37:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 15:37:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-21 15:37:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,865 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-21 15:37:03,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209052945] [2020-08-21 15:37:03,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:37:03,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 15:37:03,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544160159] [2020-08-21 15:37:03,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 15:37:03,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:37:03,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 15:37:03,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 15:37:03,868 INFO L87 Difference]: Start difference. First operand 363 states and 425 transitions. Second operand 10 states. [2020-08-21 15:37:05,545 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:05,833 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:37:06,055 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:06,283 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:06,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:37:06,631 INFO L93 Difference]: Finished difference Result 670 states and 812 transitions. [2020-08-21 15:37:06,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 15:37:06,632 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-08-21 15:37:06,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:37:06,637 INFO L225 Difference]: With dead ends: 670 [2020-08-21 15:37:06,637 INFO L226 Difference]: Without dead ends: 394 [2020-08-21 15:37:06,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 15:37:06,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-08-21 15:37:06,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 368. [2020-08-21 15:37:06,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-08-21 15:37:06,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 430 transitions. [2020-08-21 15:37:06,707 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 430 transitions. Word has length 134 [2020-08-21 15:37:06,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:37:06,708 INFO L479 AbstractCegarLoop]: Abstraction has 368 states and 430 transitions. [2020-08-21 15:37:06,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 15:37:06,708 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 430 transitions. [2020-08-21 15:37:06,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-21 15:37:06,710 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:37:06,710 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:37:06,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 15:37:06,711 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:37:06,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:37:06,711 INFO L82 PathProgramCache]: Analyzing trace with hash -475265005, now seen corresponding path program 1 times [2020-08-21 15:37:06,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:37:06,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502902262] [2020-08-21 15:37:06,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:37:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:07,011 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:37:07,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:37:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:07,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:37:07,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:07,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:37:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:07,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:37:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:07,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:37:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:07,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 15:37:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:07,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 15:37:07,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:07,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:07,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:07,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:07,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:07,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:07,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:37:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:07,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:37:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:07,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:07,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 15:37:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:07,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-21 15:37:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:07,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:07,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:07,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:37:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:07,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 15:37:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:07,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-21 15:37:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:07,165 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-21 15:37:07,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502902262] [2020-08-21 15:37:07,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:37:07,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 15:37:07,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613884448] [2020-08-21 15:37:07,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 15:37:07,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:37:07,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 15:37:07,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 15:37:07,168 INFO L87 Difference]: Start difference. First operand 368 states and 430 transitions. Second operand 10 states. [2020-08-21 15:37:07,584 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:09,058 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:09,319 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:09,558 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:09,787 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:10,062 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:10,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:37:10,404 INFO L93 Difference]: Finished difference Result 401 states and 482 transitions. [2020-08-21 15:37:10,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 15:37:10,406 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-08-21 15:37:10,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:37:10,409 INFO L225 Difference]: With dead ends: 401 [2020-08-21 15:37:10,409 INFO L226 Difference]: Without dead ends: 398 [2020-08-21 15:37:10,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 15:37:10,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-08-21 15:37:10,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 368. [2020-08-21 15:37:10,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-08-21 15:37:10,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 429 transitions. [2020-08-21 15:37:10,480 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 429 transitions. Word has length 134 [2020-08-21 15:37:10,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:37:10,480 INFO L479 AbstractCegarLoop]: Abstraction has 368 states and 429 transitions. [2020-08-21 15:37:10,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 15:37:10,481 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 429 transitions. [2020-08-21 15:37:10,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-21 15:37:10,483 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:37:10,483 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:37:10,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 15:37:10,484 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:37:10,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:37:10,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1918338429, now seen corresponding path program 1 times [2020-08-21 15:37:10,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:37:10,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809457857] [2020-08-21 15:37:10,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:37:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:10,790 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:37:10,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:37:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:10,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:37:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:10,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:37:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:10,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:37:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:10,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:37:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:10,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 15:37:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:10,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 15:37:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:10,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:10,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:10,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:10,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:10,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:10,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:37:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:10,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:37:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:10,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:10,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 15:37:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:10,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-21 15:37:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:10,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:10,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:10,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:37:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:10,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:10,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-21 15:37:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:10,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-21 15:37:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:10,989 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-21 15:37:10,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809457857] [2020-08-21 15:37:10,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:37:10,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 15:37:10,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995683250] [2020-08-21 15:37:10,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 15:37:10,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:37:10,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 15:37:10,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:37:10,991 INFO L87 Difference]: Start difference. First operand 368 states and 429 transitions. Second operand 12 states. [2020-08-21 15:37:11,468 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:12,321 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:12,864 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:37:13,146 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:37:13,396 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:37:13,650 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:13,939 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:37:14,185 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:37:15,706 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:15,962 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:16,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:37:16,675 INFO L93 Difference]: Finished difference Result 881 states and 1104 transitions. [2020-08-21 15:37:16,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-21 15:37:16,676 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 138 [2020-08-21 15:37:16,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:37:16,681 INFO L225 Difference]: With dead ends: 881 [2020-08-21 15:37:16,681 INFO L226 Difference]: Without dead ends: 600 [2020-08-21 15:37:16,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-21 15:37:16,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2020-08-21 15:37:16,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 513. [2020-08-21 15:37:16,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-08-21 15:37:16,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 606 transitions. [2020-08-21 15:37:16,781 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 606 transitions. Word has length 138 [2020-08-21 15:37:16,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:37:16,782 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 606 transitions. [2020-08-21 15:37:16,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 15:37:16,782 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 606 transitions. [2020-08-21 15:37:16,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-08-21 15:37:16,788 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:37:16,789 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 15:37:16,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 15:37:16,789 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:37:16,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:37:16,790 INFO L82 PathProgramCache]: Analyzing trace with hash -169355685, now seen corresponding path program 2 times [2020-08-21 15:37:16,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:37:16,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007832724] [2020-08-21 15:37:16,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:37:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,141 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:37:17,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:37:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:37:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:37:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:37:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:37:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 15:37:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 15:37:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:17,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:37:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:37:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 15:37:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:37:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:37:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:37:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-21 15:37:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-21 15:37:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-08-21 15:37:17,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:17,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:37:17,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-08-21 15:37:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-21 15:37:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:17,429 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 39 proven. 22 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-21 15:37:17,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007832724] [2020-08-21 15:37:17,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:37:17,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 15:37:17,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700011742] [2020-08-21 15:37:17,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 15:37:17,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:37:17,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 15:37:17,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-21 15:37:17,433 INFO L87 Difference]: Start difference. First operand 513 states and 606 transitions. Second operand 14 states. [2020-08-21 15:37:17,955 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:18,629 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:19,448 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:19,726 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:37:19,964 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:37:20,202 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:20,466 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:37:20,714 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:37:22,040 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:22,387 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:23,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:37:23,589 INFO L93 Difference]: Finished difference Result 1240 states and 1606 transitions. [2020-08-21 15:37:23,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-21 15:37:23,590 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 196 [2020-08-21 15:37:23,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:37:23,595 INFO L225 Difference]: With dead ends: 1240 [2020-08-21 15:37:23,596 INFO L226 Difference]: Without dead ends: 814 [2020-08-21 15:37:23,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2020-08-21 15:37:23,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2020-08-21 15:37:23,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 511. [2020-08-21 15:37:23,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-21 15:37:23,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 603 transitions. [2020-08-21 15:37:23,697 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 603 transitions. Word has length 196 [2020-08-21 15:37:23,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:37:23,698 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 603 transitions. [2020-08-21 15:37:23,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 15:37:23,698 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 603 transitions. [2020-08-21 15:37:23,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-21 15:37:23,701 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:37:23,702 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:37:23,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 15:37:23,702 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:37:23,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:37:23,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1150491295, now seen corresponding path program 3 times [2020-08-21 15:37:23,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:37:23,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980664644] [2020-08-21 15:37:23,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:37:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,955 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:37:23,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:37:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:37:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:37:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:37:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:37:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 15:37:23,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 15:37:24,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:24,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:24,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:24,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:24,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:24,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:24,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:24,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:37:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:24,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:37:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:24,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:24,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 15:37:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:24,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:24,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:37:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:24,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:24,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:24,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:37:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:24,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:24,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:37:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:24,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:24,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:24,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-21 15:37:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:24,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 15:37:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:24,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:24,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:24,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:37:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:24,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:24,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-21 15:37:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:24,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 15:37:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:24,247 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 49 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-21 15:37:24,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980664644] [2020-08-21 15:37:24,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:37:24,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 15:37:24,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586511279] [2020-08-21 15:37:24,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 15:37:24,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:37:24,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 15:37:24,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-21 15:37:24,250 INFO L87 Difference]: Start difference. First operand 511 states and 603 transitions. Second operand 13 states. [2020-08-21 15:37:25,200 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:25,470 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:27,051 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 15:37:27,289 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:37:27,517 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:37:27,938 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-08-21 15:37:29,473 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189 [2020-08-21 15:37:29,734 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 15:37:30,021 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:37:30,263 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:37:31,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:37:31,255 INFO L93 Difference]: Finished difference Result 1408 states and 1753 transitions. [2020-08-21 15:37:31,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 15:37:31,256 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 192 [2020-08-21 15:37:31,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:37:31,261 INFO L225 Difference]: With dead ends: 1408 [2020-08-21 15:37:31,261 INFO L226 Difference]: Without dead ends: 982 [2020-08-21 15:37:31,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 74 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=299, Invalid=961, Unknown=0, NotChecked=0, Total=1260 [2020-08-21 15:37:31,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2020-08-21 15:37:31,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 833. [2020-08-21 15:37:31,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 833 states. [2020-08-21 15:37:31,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 968 transitions. [2020-08-21 15:37:31,419 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 968 transitions. Word has length 192 [2020-08-21 15:37:31,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:37:31,419 INFO L479 AbstractCegarLoop]: Abstraction has 833 states and 968 transitions. [2020-08-21 15:37:31,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 15:37:31,419 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 968 transitions. [2020-08-21 15:37:31,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-21 15:37:31,422 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:37:31,422 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:37:31,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 15:37:31,422 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:37:31,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:37:31,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1185901215, now seen corresponding path program 1 times [2020-08-21 15:37:31,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:37:31,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154512840] [2020-08-21 15:37:31,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:37:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:31,756 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:37:31,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:37:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:31,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:37:31,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:31,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:37:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:31,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:37:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:31,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:37:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:31,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 15:37:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:31,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 15:37:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:31,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:31,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:31,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:31,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:31,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:37:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:31,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:37:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:31,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:31,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 15:37:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:31,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:31,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:37:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:31,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:31,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:31,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:37:31,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:31,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:31,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:37:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:31,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:31,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-21 15:37:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:31,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 15:37:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:31,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:31,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:31,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:37:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:31,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:31,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-21 15:37:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:31,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 15:37:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:32,065 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 41 proven. 8 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-08-21 15:37:32,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154512840] [2020-08-21 15:37:32,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:37:32,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 15:37:32,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177714776] [2020-08-21 15:37:32,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 15:37:32,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:37:32,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 15:37:32,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 15:37:32,069 INFO L87 Difference]: Start difference. First operand 833 states and 968 transitions. Second operand 13 states.