/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:55:30,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:55:30,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:55:30,432 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:55:30,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:55:30,433 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:55:30,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:55:30,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:55:30,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:55:30,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:55:30,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:55:30,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:55:30,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:55:30,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:55:30,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:55:30,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:55:30,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:55:30,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:55:30,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:55:30,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:55:30,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:55:30,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:55:30,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:55:30,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:55:30,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:55:30,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:55:30,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:55:30,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:55:30,457 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:55:30,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:55:30,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:55:30,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:55:30,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:55:30,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:55:30,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:55:30,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:55:30,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:55:30,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:55:30,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:55:30,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:55:30,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:55:30,464 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 20:55:30,485 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:55:30,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:55:30,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:55:30,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:55:30,487 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:55:30,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:55:30,488 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:55:30,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:55:30,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:55:30,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:55:30,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:55:30,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:55:30,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:55:30,489 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:55:30,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:55:30,489 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:55:30,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:55:30,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:55:30,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:55:30,490 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:55:30,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:55:30,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:55:30,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:55:30,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:55:30,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:55:30,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:55:30,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:55:30,492 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:55:30,492 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:55:30,492 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; [2020-08-18 20:55:30,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:55:30,832 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:55:30,838 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:55:30,839 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:55:30,840 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:55:30,841 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product55.cil.c [2020-08-18 20:55:30,903 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27c9f4ae5/4d98cbeb881f448ca48801728a1cd0d2/FLAG591e9c675 [2020-08-18 20:55:31,437 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:55:31,437 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product55.cil.c [2020-08-18 20:55:31,450 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27c9f4ae5/4d98cbeb881f448ca48801728a1cd0d2/FLAG591e9c675 [2020-08-18 20:55:31,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27c9f4ae5/4d98cbeb881f448ca48801728a1cd0d2 [2020-08-18 20:55:31,727 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:55:31,729 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:55:31,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:55:31,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:55:31,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:55:31,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:55:31" (1/1) ... [2020-08-18 20:55:31,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1694a7ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:31, skipping insertion in model container [2020-08-18 20:55:31,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:55:31" (1/1) ... [2020-08-18 20:55:31,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:55:31,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:55:32,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:55:32,195 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:55:32,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:55:32,456 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:55:32,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:32 WrapperNode [2020-08-18 20:55:32,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:55:32,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:55:32,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:55:32,458 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:55:32,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:32" (1/1) ... [2020-08-18 20:55:32,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:32" (1/1) ... [2020-08-18 20:55:32,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:32" (1/1) ... [2020-08-18 20:55:32,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:32" (1/1) ... [2020-08-18 20:55:32,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:32" (1/1) ... [2020-08-18 20:55:32,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:32" (1/1) ... [2020-08-18 20:55:32,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:32" (1/1) ... [2020-08-18 20:55:32,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:55:32,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:55:32,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:55:32,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:55:32,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:55:32,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:55:32,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:55:32,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 20:55:32,631 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 20:55:32,631 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 20:55:32,631 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 20:55:32,631 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 20:55:32,632 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 20:55:32,632 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 20:55:32,632 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 20:55:32,632 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 20:55:32,632 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 20:55:32,632 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 20:55:32,633 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 20:55:32,633 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 20:55:32,633 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 20:55:32,633 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 20:55:32,633 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 20:55:32,633 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 20:55:32,634 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 20:55:32,634 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 20:55:32,634 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 20:55:32,634 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 20:55:32,634 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 20:55:32,634 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 20:55:32,635 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 20:55:32,635 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 20:55:32,635 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 20:55:32,635 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 20:55:32,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 20:55:32,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 20:55:32,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 20:55:32,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 20:55:32,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 20:55:32,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 20:55:32,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 20:55:32,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 20:55:32,637 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 20:55:32,637 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 20:55:32,637 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 20:55:32,637 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 20:55:32,637 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:55:32,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 20:55:32,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:55:32,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:55:32,638 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 20:55:32,638 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 20:55:32,638 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 20:55:32,638 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 20:55:32,639 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 20:55:32,639 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 20:55:32,639 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 20:55:32,639 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 20:55:32,639 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 20:55:32,639 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 20:55:32,640 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 20:55:32,640 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 20:55:32,640 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 20:55:32,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:55:32,640 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 20:55:32,640 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 20:55:32,641 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 20:55:32,641 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 20:55:32,641 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 20:55:32,641 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 20:55:32,641 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 20:55:32,641 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 20:55:32,642 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 20:55:32,642 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 20:55:32,642 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 20:55:32,642 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 20:55:32,642 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 20:55:32,642 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 20:55:32,642 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 20:55:32,643 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 20:55:32,643 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 20:55:32,643 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:55:32,643 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:55:32,643 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 20:55:32,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:55:32,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:55:32,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:55:32,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:55:32,644 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 20:55:32,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:55:32,644 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 20:55:32,644 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 20:55:32,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:55:32,645 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 20:55:32,645 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 20:55:32,645 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 20:55:32,645 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 20:55:32,645 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 20:55:32,645 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 20:55:32,646 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 20:55:32,646 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 20:55:32,646 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:55:32,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:55:32,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 20:55:32,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:55:33,815 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:55:33,816 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 20:55:33,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:55:33 BoogieIcfgContainer [2020-08-18 20:55:33,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:55:33,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:55:33,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:55:33,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:55:33,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:55:31" (1/3) ... [2020-08-18 20:55:33,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30416a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:55:33, skipping insertion in model container [2020-08-18 20:55:33,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:32" (2/3) ... [2020-08-18 20:55:33,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30416a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:55:33, skipping insertion in model container [2020-08-18 20:55:33,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:55:33" (3/3) ... [2020-08-18 20:55:33,837 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product55.cil.c [2020-08-18 20:55:33,848 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:55:33,861 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:55:33,877 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:55:33,907 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:55:33,907 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:55:33,908 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:55:33,908 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:55:33,908 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:55:33,908 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:55:33,909 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:55:33,909 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:55:33,932 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2020-08-18 20:55:33,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 20:55:33,943 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:33,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:55:33,945 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:33,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:33,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1134611440, now seen corresponding path program 1 times [2020-08-18 20:55:33,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:33,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421978970] [2020-08-18 20:55:33,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:34,683 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:55:34,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:55:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:34,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:55:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:34,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:55:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:34,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:34,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:55:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:34,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:55:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:34,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:55:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:34,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 20:55:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:34,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:55:34,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421978970] [2020-08-18 20:55:34,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:55:34,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:55:34,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232886563] [2020-08-18 20:55:34,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:55:34,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:55:34,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:55:34,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:55:34,816 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 4 states. [2020-08-18 20:55:36,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:55:36,064 INFO L93 Difference]: Finished difference Result 343 states and 449 transitions. [2020-08-18 20:55:36,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 20:55:36,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 20:55:36,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:55:36,081 INFO L225 Difference]: With dead ends: 343 [2020-08-18 20:55:36,081 INFO L226 Difference]: Without dead ends: 190 [2020-08-18 20:55:36,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:55:36,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-08-18 20:55:36,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 154. [2020-08-18 20:55:36,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-08-18 20:55:36,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 184 transitions. [2020-08-18 20:55:36,183 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 184 transitions. Word has length 51 [2020-08-18 20:55:36,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:55:36,183 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 184 transitions. [2020-08-18 20:55:36,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:55:36,184 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 184 transitions. [2020-08-18 20:55:36,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 20:55:36,187 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:36,188 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] [2020-08-18 20:55:36,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:55:36,188 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:36,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:36,189 INFO L82 PathProgramCache]: Analyzing trace with hash -179918531, now seen corresponding path program 1 times [2020-08-18 20:55:36,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:36,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843731944] [2020-08-18 20:55:36,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:36,520 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:55:36,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:55:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:36,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:55:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:36,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:55:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:36,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:36,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:55:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:36,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:55:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:36,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:55:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:36,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:55:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:36,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:55:36,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843731944] [2020-08-18 20:55:36,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:55:36,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:55:36,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886727224] [2020-08-18 20:55:36,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:55:36,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:55:36,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:55:36,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:55:36,576 INFO L87 Difference]: Start difference. First operand 154 states and 184 transitions. Second operand 5 states. [2020-08-18 20:55:37,106 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:38,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:55:38,316 INFO L93 Difference]: Finished difference Result 282 states and 352 transitions. [2020-08-18 20:55:38,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 20:55:38,317 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 20:55:38,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:55:38,323 INFO L225 Difference]: With dead ends: 282 [2020-08-18 20:55:38,323 INFO L226 Difference]: Without dead ends: 180 [2020-08-18 20:55:38,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 20:55:38,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-08-18 20:55:38,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 145. [2020-08-18 20:55:38,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-08-18 20:55:38,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 172 transitions. [2020-08-18 20:55:38,375 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 172 transitions. Word has length 52 [2020-08-18 20:55:38,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:55:38,376 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 172 transitions. [2020-08-18 20:55:38,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:55:38,376 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 172 transitions. [2020-08-18 20:55:38,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-18 20:55:38,379 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:38,379 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] [2020-08-18 20:55:38,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:55:38,380 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:38,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:38,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1227863388, now seen corresponding path program 1 times [2020-08-18 20:55:38,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:38,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492815719] [2020-08-18 20:55:38,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:38,711 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:55:38,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:55:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:38,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:55:38,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:38,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:55:38,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:38,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:38,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:55:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:38,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:55:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:38,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 20:55:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:38,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:55:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:38,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:55:38,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492815719] [2020-08-18 20:55:38,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:55:38,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:55:38,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262010732] [2020-08-18 20:55:38,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:55:38,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:55:38,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:55:38,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:55:38,815 INFO L87 Difference]: Start difference. First operand 145 states and 172 transitions. Second operand 9 states. [2020-08-18 20:55:39,310 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:55:39,628 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:39,890 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:40,151 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:40,968 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:43,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:55:43,336 INFO L93 Difference]: Finished difference Result 487 states and 618 transitions. [2020-08-18 20:55:43,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 20:55:43,337 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-18 20:55:43,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:55:43,344 INFO L225 Difference]: With dead ends: 487 [2020-08-18 20:55:43,345 INFO L226 Difference]: Without dead ends: 370 [2020-08-18 20:55:43,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 20:55:43,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-08-18 20:55:43,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 305. [2020-08-18 20:55:43,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-08-18 20:55:43,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 374 transitions. [2020-08-18 20:55:43,427 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 374 transitions. Word has length 56 [2020-08-18 20:55:43,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:55:43,428 INFO L479 AbstractCegarLoop]: Abstraction has 305 states and 374 transitions. [2020-08-18 20:55:43,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:55:43,428 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 374 transitions. [2020-08-18 20:55:43,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-18 20:55:43,431 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:43,431 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] [2020-08-18 20:55:43,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:55:43,432 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:43,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:43,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1601957820, now seen corresponding path program 1 times [2020-08-18 20:55:43,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:43,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084587714] [2020-08-18 20:55:43,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:43,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:43,736 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:55:43,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:55:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:43,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:55:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:43,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:55:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:43,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:43,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:55:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:43,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:55:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:43,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:55:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:43,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:55:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:43,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 20:55:43,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:43,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:55:43,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084587714] [2020-08-18 20:55:43,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:55:43,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:55:43,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037616524] [2020-08-18 20:55:43,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:55:43,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:55:43,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:55:43,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:55:43,865 INFO L87 Difference]: Start difference. First operand 305 states and 374 transitions. Second operand 9 states. [2020-08-18 20:55:44,336 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:55:45,341 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:45,833 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:55:46,140 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:46,412 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:48,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:55:48,103 INFO L93 Difference]: Finished difference Result 973 states and 1285 transitions. [2020-08-18 20:55:48,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 20:55:48,104 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-18 20:55:48,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:55:48,111 INFO L225 Difference]: With dead ends: 973 [2020-08-18 20:55:48,111 INFO L226 Difference]: Without dead ends: 696 [2020-08-18 20:55:48,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 20:55:48,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-08-18 20:55:48,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 558. [2020-08-18 20:55:48,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2020-08-18 20:55:48,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 688 transitions. [2020-08-18 20:55:48,282 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 688 transitions. Word has length 62 [2020-08-18 20:55:48,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:55:48,283 INFO L479 AbstractCegarLoop]: Abstraction has 558 states and 688 transitions. [2020-08-18 20:55:48,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:55:48,283 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 688 transitions. [2020-08-18 20:55:48,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-18 20:55:48,287 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:48,287 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] [2020-08-18 20:55:48,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:55:48,288 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:48,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:48,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1204720808, now seen corresponding path program 1 times [2020-08-18 20:55:48,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:48,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684876941] [2020-08-18 20:55:48,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:48,611 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:55:48,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:55:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:48,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:55:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:48,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:55:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:48,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:48,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:55:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:48,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:55:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:48,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:55:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:48,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 20:55:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:48,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 20:55:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:48,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 20:55:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:48,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:55:48,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684876941] [2020-08-18 20:55:48,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:55:48,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:55:48,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62085847] [2020-08-18 20:55:48,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:55:48,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:55:48,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:55:48,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:55:48,768 INFO L87 Difference]: Start difference. First operand 558 states and 688 transitions. Second operand 10 states. [2020-08-18 20:55:49,174 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:55:50,235 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:50,513 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:50,767 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:51,460 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:55:53,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:55:53,020 INFO L93 Difference]: Finished difference Result 1531 states and 2090 transitions. [2020-08-18 20:55:53,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 20:55:53,021 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-18 20:55:53,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:55:53,035 INFO L225 Difference]: With dead ends: 1531 [2020-08-18 20:55:53,036 INFO L226 Difference]: Without dead ends: 1001 [2020-08-18 20:55:53,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-18 20:55:53,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2020-08-18 20:55:53,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 805. [2020-08-18 20:55:53,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 805 states. [2020-08-18 20:55:53,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 983 transitions. [2020-08-18 20:55:53,307 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 983 transitions. Word has length 66 [2020-08-18 20:55:53,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:55:53,308 INFO L479 AbstractCegarLoop]: Abstraction has 805 states and 983 transitions. [2020-08-18 20:55:53,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:55:53,308 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 983 transitions. [2020-08-18 20:55:53,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 20:55:53,312 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:53,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:55:53,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:55:53,313 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:53,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:53,315 INFO L82 PathProgramCache]: Analyzing trace with hash -763723638, now seen corresponding path program 1 times [2020-08-18 20:55:53,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:53,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864590119] [2020-08-18 20:55:53,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:53,602 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:55:53,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:55:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:53,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:55:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:53,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:55:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:53,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:53,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:55:53,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:53,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:55:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:53,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:55:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:53,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:55:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:53,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:53,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:53,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:53,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:53,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:55:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:53,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 20:55:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:53,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 20:55:53,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:53,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:55:53,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864590119] [2020-08-18 20:55:53,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:55:53,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:55:53,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409789203] [2020-08-18 20:55:53,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:55:53,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:55:53,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:55:53,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:55:53,777 INFO L87 Difference]: Start difference. First operand 805 states and 983 transitions. Second operand 10 states. [2020-08-18 20:55:54,922 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:55,184 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 20:55:55,465 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:55,701 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:57,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:55:57,006 INFO L93 Difference]: Finished difference Result 1854 states and 2470 transitions. [2020-08-18 20:55:57,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 20:55:57,007 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-08-18 20:55:57,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:55:57,016 INFO L225 Difference]: With dead ends: 1854 [2020-08-18 20:55:57,016 INFO L226 Difference]: Without dead ends: 1077 [2020-08-18 20:55:57,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 20:55:57,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2020-08-18 20:55:57,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 831. [2020-08-18 20:55:57,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 831 states. [2020-08-18 20:55:57,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1011 transitions. [2020-08-18 20:55:57,364 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1011 transitions. Word has length 93 [2020-08-18 20:55:57,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:55:57,365 INFO L479 AbstractCegarLoop]: Abstraction has 831 states and 1011 transitions. [2020-08-18 20:55:57,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:55:57,365 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1011 transitions. [2020-08-18 20:55:57,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 20:55:57,373 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:57,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:55:57,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:55:57,374 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:57,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:57,374 INFO L82 PathProgramCache]: Analyzing trace with hash -836110196, now seen corresponding path program 1 times [2020-08-18 20:55:57,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:57,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908234689] [2020-08-18 20:55:57,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:57,710 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:55:57,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:55:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:57,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:55:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:57,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:55:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:57,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:57,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:55:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:57,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:55:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:57,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:55:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:57,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:55:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:57,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:57,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:57,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:57,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:57,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:55:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:57,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 20:55:57,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:57,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 20:55:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:57,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:55:57,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908234689] [2020-08-18 20:55:57,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:55:57,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 20:55:57,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830553683] [2020-08-18 20:55:57,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 20:55:57,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:55:57,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 20:55:57,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:55:57,913 INFO L87 Difference]: Start difference. First operand 831 states and 1011 transitions. Second operand 12 states. [2020-08-18 20:55:58,484 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:58,727 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:58,956 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:59,818 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:56:00,092 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:56:00,346 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:56:01,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:56:01,878 INFO L93 Difference]: Finished difference Result 1908 states and 2587 transitions. [2020-08-18 20:56:01,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 20:56:01,880 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 93 [2020-08-18 20:56:01,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:56:01,888 INFO L225 Difference]: With dead ends: 1908 [2020-08-18 20:56:01,888 INFO L226 Difference]: Without dead ends: 1105 [2020-08-18 20:56:01,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 20:56:01,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2020-08-18 20:56:02,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 847. [2020-08-18 20:56:02,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-08-18 20:56:02,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1027 transitions. [2020-08-18 20:56:02,058 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1027 transitions. Word has length 93 [2020-08-18 20:56:02,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:56:02,059 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1027 transitions. [2020-08-18 20:56:02,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 20:56:02,060 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1027 transitions. [2020-08-18 20:56:02,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 20:56:02,063 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:02,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:56:02,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 20:56:02,063 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:02,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:02,064 INFO L82 PathProgramCache]: Analyzing trace with hash -506344435, now seen corresponding path program 1 times [2020-08-18 20:56:02,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:02,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130765510] [2020-08-18 20:56:02,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,343 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:56:02,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:56:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:56:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:56:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:56:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:56:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:56:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:56:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:56:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:02,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:56:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:56:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 20:56:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 20:56:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:56:02,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130765510] [2020-08-18 20:56:02,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:56:02,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:56:02,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126472226] [2020-08-18 20:56:02,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:56:02,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:56:02,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:56:02,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:56:02,517 INFO L87 Difference]: Start difference. First operand 847 states and 1027 transitions. Second operand 8 states. [2020-08-18 20:56:02,948 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:56:03,506 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:56:06,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:56:06,395 INFO L93 Difference]: Finished difference Result 2850 states and 3893 transitions. [2020-08-18 20:56:06,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 20:56:06,395 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-18 20:56:06,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:56:06,409 INFO L225 Difference]: With dead ends: 2850 [2020-08-18 20:56:06,409 INFO L226 Difference]: Without dead ends: 2031 [2020-08-18 20:56:06,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-18 20:56:06,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2020-08-18 20:56:06,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 1687. [2020-08-18 20:56:06,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2020-08-18 20:56:06,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2069 transitions. [2020-08-18 20:56:06,780 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2069 transitions. Word has length 93 [2020-08-18 20:56:06,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:56:06,781 INFO L479 AbstractCegarLoop]: Abstraction has 1687 states and 2069 transitions. [2020-08-18 20:56:06,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:56:06,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2069 transitions. [2020-08-18 20:56:06,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-18 20:56:06,785 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:06,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:56:06,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 20:56:06,786 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:06,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:06,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1600364013, now seen corresponding path program 1 times [2020-08-18 20:56:06,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:06,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491383872] [2020-08-18 20:56:06,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,061 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:56:07,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:56:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:56:07,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:56:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:56:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:56:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:56:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:56:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:56:07,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:56:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:56:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:56:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 20:56:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 20:56:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:56:07,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491383872] [2020-08-18 20:56:07,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:56:07,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:56:07,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314804008] [2020-08-18 20:56:07,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:56:07,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:56:07,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:56:07,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:56:07,171 INFO L87 Difference]: Start difference. First operand 1687 states and 2069 transitions. Second operand 8 states. [2020-08-18 20:56:07,603 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:56:10,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:56:10,649 INFO L93 Difference]: Finished difference Result 3406 states and 4667 transitions. [2020-08-18 20:56:10,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 20:56:10,650 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2020-08-18 20:56:10,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:56:10,675 INFO L225 Difference]: With dead ends: 3406 [2020-08-18 20:56:10,675 INFO L226 Difference]: Without dead ends: 3403 [2020-08-18 20:56:10,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-18 20:56:10,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3403 states. [2020-08-18 20:56:11,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3403 to 2826. [2020-08-18 20:56:11,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2826 states. [2020-08-18 20:56:11,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 3547 transitions. [2020-08-18 20:56:11,371 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 3547 transitions. Word has length 97 [2020-08-18 20:56:11,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:56:11,375 INFO L479 AbstractCegarLoop]: Abstraction has 2826 states and 3547 transitions. [2020-08-18 20:56:11,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:56:11,375 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 3547 transitions. [2020-08-18 20:56:11,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-08-18 20:56:11,386 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:11,389 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 20:56:11,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 20:56:11,389 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:11,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:11,390 INFO L82 PathProgramCache]: Analyzing trace with hash -882849354, now seen corresponding path program 1 times [2020-08-18 20:56:11,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:11,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721695670] [2020-08-18 20:56:11,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:11,716 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:56:11,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:56:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:11,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:56:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:11,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:56:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:11,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:56:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:11,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:56:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:11,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:56:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:11,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:56:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:11,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:56:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:11,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:56:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:11,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:11,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:11,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:11,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:11,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:11,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:56:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:11,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:56:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:11,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 20:56:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:11,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:56:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:11,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:56:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:11,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 20:56:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:11,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 20:56:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:11,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:11,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:11,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:11,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:56:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:11,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:56:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:11,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-18 20:56:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:11,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-18 20:56:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:11,977 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-08-18 20:56:11,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721695670] [2020-08-18 20:56:11,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:56:11,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 20:56:11,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149501800] [2020-08-18 20:56:11,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 20:56:11,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:56:11,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 20:56:11,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:56:11,980 INFO L87 Difference]: Start difference. First operand 2826 states and 3547 transitions. Second operand 14 states. [2020-08-18 20:56:12,815 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:56:13,052 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:56:13,284 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:56:13,749 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:56:15,045 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:56:16,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:56:16,959 INFO L93 Difference]: Finished difference Result 5473 states and 7177 transitions. [2020-08-18 20:56:16,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-18 20:56:16,959 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 164 [2020-08-18 20:56:16,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:56:16,975 INFO L225 Difference]: With dead ends: 5473 [2020-08-18 20:56:16,976 INFO L226 Difference]: Without dead ends: 3023 [2020-08-18 20:56:16,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=323, Invalid=1399, Unknown=0, NotChecked=0, Total=1722 [2020-08-18 20:56:16,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3023 states. [2020-08-18 20:56:17,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3023 to 2680. [2020-08-18 20:56:17,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2680 states. [2020-08-18 20:56:17,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 3148 transitions. [2020-08-18 20:56:17,648 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 3148 transitions. Word has length 164 [2020-08-18 20:56:17,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:56:17,649 INFO L479 AbstractCegarLoop]: Abstraction has 2680 states and 3148 transitions. [2020-08-18 20:56:17,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 20:56:17,649 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 3148 transitions. [2020-08-18 20:56:17,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-08-18 20:56:17,660 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:17,661 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 20:56:17,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 20:56:17,661 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:17,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:17,662 INFO L82 PathProgramCache]: Analyzing trace with hash -2128517555, now seen corresponding path program 1 times [2020-08-18 20:56:17,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:17,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464490331] [2020-08-18 20:56:17,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:17,960 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:56:17,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:56:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:17,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:56:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:17,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:56:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:17,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:56:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:17,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:56:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:18,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:56:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:18,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:56:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:18,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:56:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:18,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:56:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:18,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:18,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:18,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:18,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:18,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:18,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:56:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:18,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:56:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:18,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 20:56:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:18,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:56:18,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:18,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:56:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:18,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-18 20:56:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:18,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:56:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:18,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 20:56:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:18,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:18,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:18,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:18,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:18,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:56:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:18,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:56:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:18,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-18 20:56:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:18,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-18 20:56:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-08-18 20:56:18,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464490331] [2020-08-18 20:56:18,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:56:18,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 20:56:18,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414545180] [2020-08-18 20:56:18,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:56:18,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:56:18,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:56:18,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:56:18,200 INFO L87 Difference]: Start difference. First operand 2680 states and 3148 transitions. Second operand 10 states. [2020-08-18 20:56:19,249 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:56:21,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:56:21,422 INFO L93 Difference]: Finished difference Result 3288 states and 4003 transitions. [2020-08-18 20:56:21,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 20:56:21,423 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 170 [2020-08-18 20:56:21,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:56:21,430 INFO L225 Difference]: With dead ends: 3288 [2020-08-18 20:56:21,430 INFO L226 Difference]: Without dead ends: 1165 [2020-08-18 20:56:21,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2020-08-18 20:56:21,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2020-08-18 20:56:21,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 945. [2020-08-18 20:56:21,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 945 states. [2020-08-18 20:56:21,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1095 transitions. [2020-08-18 20:56:21,618 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1095 transitions. Word has length 170 [2020-08-18 20:56:21,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:56:21,619 INFO L479 AbstractCegarLoop]: Abstraction has 945 states and 1095 transitions. [2020-08-18 20:56:21,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:56:21,619 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1095 transitions. [2020-08-18 20:56:21,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-08-18 20:56:21,623 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:21,624 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:56:21,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 20:56:21,624 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:21,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:21,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1897710765, now seen corresponding path program 1 times [2020-08-18 20:56:21,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:21,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999599549] [2020-08-18 20:56:21,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:21,968 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:56:21,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:56:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:21,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:56:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:21,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:56:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:21,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:56:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:22,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:56:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:22,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:56:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:22,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:56:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:22,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:56:22,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:22,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:56:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:22,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:22,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:22,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:22,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:22,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:22,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:56:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:22,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:56:22,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:22,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 20:56:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:22,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:56:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:22,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:56:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:22,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 20:56:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:22,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 20:56:22,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:22,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:22,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:56:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:22,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 20:56:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:22,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:22,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:56:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:22,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:56:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:22,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:22,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-18 20:56:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:22,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-18 20:56:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:22,420 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-08-18 20:56:22,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999599549] [2020-08-18 20:56:22,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:56:22,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 20:56:22,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430775909] [2020-08-18 20:56:22,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 20:56:22,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:56:22,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 20:56:22,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-18 20:56:22,424 INFO L87 Difference]: Start difference. First operand 945 states and 1095 transitions. Second operand 19 states. [2020-08-18 20:56:23,192 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:56:23,516 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 20:56:23,774 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:56:24,018 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:56:24,694 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:56:25,882 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:56:26,275 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191