/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:55:30,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:55:30,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:55:30,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:55:30,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:55:30,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:55:30,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:55:30,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:55:30,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:55:30,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:55:30,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:55:30,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:55:30,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:55:30,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:55:30,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:55:30,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:55:30,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:55:30,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:55:30,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:55:30,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:55:30,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:55:30,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:55:30,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:55:30,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:55:30,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:55:30,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:55:30,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:55:30,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:55:30,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:55:30,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:55:30,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:55:30,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:55:30,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:55:30,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:55:30,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:55:30,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:55:30,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:55:30,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:55:30,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:55:30,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:55:30,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:55:30,523 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 00:55:30,569 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:55:30,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:55:30,571 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:55:30,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:55:30,572 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:55:30,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:55:30,572 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:55:30,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:55:30,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:55:30,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:55:30,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:55:30,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:55:30,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:55:30,575 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:55:30,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:55:30,575 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:55:30,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:55:30,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:55:30,576 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:55:30,576 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:55:30,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:55:30,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:55:30,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:55:30,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:55:30,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:55:30,577 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:55:30,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:55:30,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:55:30,578 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:55:30,578 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 00:55:30,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:55:30,892 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:55:30,896 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:55:30,897 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:55:30,897 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:55:30,898 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product62.cil.c [2020-08-19 00:55:30,969 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b68a850a2/c7e16cd91ef9449bb0ae7e42e27a7f0a/FLAG4fa90362c [2020-08-19 00:55:31,526 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:55:31,526 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product62.cil.c [2020-08-19 00:55:31,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b68a850a2/c7e16cd91ef9449bb0ae7e42e27a7f0a/FLAG4fa90362c [2020-08-19 00:55:31,815 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b68a850a2/c7e16cd91ef9449bb0ae7e42e27a7f0a [2020-08-19 00:55:31,823 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:55:31,824 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:55:31,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:55:31,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:55:31,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:55:31,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:55:31" (1/1) ... [2020-08-19 00:55:31,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e42023b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:31, skipping insertion in model container [2020-08-19 00:55:31,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:55:31" (1/1) ... [2020-08-19 00:55:31,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:55:31,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:55:32,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:55:32,345 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:55:32,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:55:32,486 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:55:32,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:32 WrapperNode [2020-08-19 00:55:32,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:55:32,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:55:32,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:55:32,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:55:32,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:32" (1/1) ... [2020-08-19 00:55:32,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:32" (1/1) ... [2020-08-19 00:55:32,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:32" (1/1) ... [2020-08-19 00:55:32,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:32" (1/1) ... [2020-08-19 00:55:32,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:32" (1/1) ... [2020-08-19 00:55:32,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:32" (1/1) ... [2020-08-19 00:55:32,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:32" (1/1) ... [2020-08-19 00:55:32,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:55:32,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:55:32,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:55:32,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:55:32,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:32" (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 [2020-08-19 00:55:32,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:55:32,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:55:32,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 00:55:32,687 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 00:55:32,688 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 00:55:32,688 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:55:32,688 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 00:55:32,688 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 00:55:32,688 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 00:55:32,688 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 00:55:32,689 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 00:55:32,689 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 00:55:32,689 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 00:55:32,689 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 00:55:32,689 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 00:55:32,689 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 00:55:32,690 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 00:55:32,690 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 00:55:32,690 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 00:55:32,690 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 00:55:32,690 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 00:55:32,690 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 00:55:32,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 00:55:32,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 00:55:32,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 00:55:32,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 00:55:32,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 00:55:32,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 00:55:32,692 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 00:55:32,692 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 00:55:32,692 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 00:55:32,692 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 00:55:32,692 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:55:32,692 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 00:55:32,692 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 00:55:32,693 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 00:55:32,693 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 00:55:32,693 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 00:55:32,693 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 00:55:32,693 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 00:55:32,693 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 00:55:32,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-19 00:55:32,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 00:55:32,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:55:32,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:55:32,694 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 00:55:32,694 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 00:55:32,694 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 00:55:32,695 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 00:55:32,695 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 00:55:32,695 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 00:55:32,695 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 00:55:32,695 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 00:55:32,695 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 00:55:32,696 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 00:55:32,696 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 00:55:32,696 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 00:55:32,696 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-19 00:55:32,696 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 00:55:32,696 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 00:55:32,696 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 00:55:32,697 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:55:32,697 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 00:55:32,697 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 00:55:32,697 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 00:55:32,697 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 00:55:32,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:55:32,697 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 00:55:32,698 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 00:55:32,698 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 00:55:32,698 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 00:55:32,698 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 00:55:32,698 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 00:55:32,698 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 00:55:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 00:55:32,700 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 00:55:32,700 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:55:32,700 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:55:32,701 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 00:55:32,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:55:32,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:55:32,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:55:32,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:55:32,702 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 00:55:32,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:55:32,702 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 00:55:32,703 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 00:55:32,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:55:32,703 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 00:55:32,703 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 00:55:32,703 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 00:55:32,703 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 00:55:32,703 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 00:55:32,704 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 00:55:32,704 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:55:32,704 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 00:55:32,704 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 00:55:32,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:55:32,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 00:55:32,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:55:33,804 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:55:33,804 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 00:55:33,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:55:33 BoogieIcfgContainer [2020-08-19 00:55:33,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:55:33,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:55:33,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:55:33,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:55:33,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:55:31" (1/3) ... [2020-08-19 00:55:33,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd7fa2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:55:33, skipping insertion in model container [2020-08-19 00:55:33,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:32" (2/3) ... [2020-08-19 00:55:33,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd7fa2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:55:33, skipping insertion in model container [2020-08-19 00:55:33,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:55:33" (3/3) ... [2020-08-19 00:55:33,820 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product62.cil.c [2020-08-19 00:55:33,831 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:55:33,840 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:55:33,857 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:55:33,886 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:55:33,886 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:55:33,886 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:55:33,887 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:55:33,887 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:55:33,887 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:55:33,887 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:55:33,888 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:55:33,910 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2020-08-19 00:55:33,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 00:55:33,921 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:55:33,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:55:33,923 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:55:33,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:55:33,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1419538001, now seen corresponding path program 1 times [2020-08-19 00:55:33,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:55:33,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757401543] [2020-08-19 00:55:33,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:55:34,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:34,577 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:55:34,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:55:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:34,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:55:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:34,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:55:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:34,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:55:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:34,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:55:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:34,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:55:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:34,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:55:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:34,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:55:34,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757401543] [2020-08-19 00:55:34,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:55:34,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:55:34,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841049285] [2020-08-19 00:55:34,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:55:34,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:55:34,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:55:34,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:55:34,738 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 3 states. [2020-08-19 00:55:36,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:55:36,086 INFO L93 Difference]: Finished difference Result 354 states and 461 transitions. [2020-08-19 00:55:36,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:55:36,088 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 00:55:36,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:55:36,121 INFO L225 Difference]: With dead ends: 354 [2020-08-19 00:55:36,121 INFO L226 Difference]: Without dead ends: 191 [2020-08-19 00:55:36,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:55:36,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-08-19 00:55:36,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 154. [2020-08-19 00:55:36,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-08-19 00:55:36,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 183 transitions. [2020-08-19 00:55:36,307 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 183 transitions. Word has length 46 [2020-08-19 00:55:36,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:55:36,308 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 183 transitions. [2020-08-19 00:55:36,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:55:36,308 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 183 transitions. [2020-08-19 00:55:36,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 00:55:36,319 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:55:36,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:55:36,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:55:36,320 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:55:36,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:55:36,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1353902391, now seen corresponding path program 1 times [2020-08-19 00:55:36,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:55:36,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970473851] [2020-08-19 00:55:36,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:55:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:36,739 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:55:36,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:55:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:36,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:55:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:36,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:55:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:36,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:55:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:36,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:55:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:36,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:55:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:36,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 00:55:36,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:36,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:55:36,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970473851] [2020-08-19 00:55:36,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:55:36,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:55:36,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093114978] [2020-08-19 00:55:36,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:55:36,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:55:36,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:55:36,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:55:36,790 INFO L87 Difference]: Start difference. First operand 154 states and 183 transitions. Second operand 4 states. [2020-08-19 00:55:37,217 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:55:38,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:55:38,249 INFO L93 Difference]: Finished difference Result 283 states and 348 transitions. [2020-08-19 00:55:38,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 00:55:38,249 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 00:55:38,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:55:38,253 INFO L225 Difference]: With dead ends: 283 [2020-08-19 00:55:38,254 INFO L226 Difference]: Without dead ends: 175 [2020-08-19 00:55:38,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:55:38,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-08-19 00:55:38,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 145. [2020-08-19 00:55:38,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-08-19 00:55:38,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 171 transitions. [2020-08-19 00:55:38,297 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 171 transitions. Word has length 47 [2020-08-19 00:55:38,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:55:38,297 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 171 transitions. [2020-08-19 00:55:38,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:55:38,298 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 171 transitions. [2020-08-19 00:55:38,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 00:55:38,299 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:55:38,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:55:38,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:55:38,300 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:55:38,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:55:38,301 INFO L82 PathProgramCache]: Analyzing trace with hash -480372053, now seen corresponding path program 1 times [2020-08-19 00:55:38,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:55:38,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831662797] [2020-08-19 00:55:38,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:55:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:38,626 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:55:38,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:55:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:38,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:55:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:38,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:55:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:38,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:55:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:38,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:55:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:38,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:55:38,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:38,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:55:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:38,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:55:38,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831662797] [2020-08-19 00:55:38,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:55:38,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:55:38,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885551886] [2020-08-19 00:55:38,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:55:38,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:55:38,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:55:38,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:55:38,764 INFO L87 Difference]: Start difference. First operand 145 states and 171 transitions. Second operand 8 states. [2020-08-19 00:55:39,101 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:55:39,407 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:55:39,678 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:55:39,908 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:55:41,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:55:41,318 INFO L93 Difference]: Finished difference Result 296 states and 366 transitions. [2020-08-19 00:55:41,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 00:55:41,320 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-19 00:55:41,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:55:41,323 INFO L225 Difference]: With dead ends: 296 [2020-08-19 00:55:41,323 INFO L226 Difference]: Without dead ends: 175 [2020-08-19 00:55:41,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:55:41,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-08-19 00:55:41,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 145. [2020-08-19 00:55:41,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-08-19 00:55:41,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 170 transitions. [2020-08-19 00:55:41,366 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 170 transitions. Word has length 52 [2020-08-19 00:55:41,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:55:41,367 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 170 transitions. [2020-08-19 00:55:41,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:55:41,367 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 170 transitions. [2020-08-19 00:55:41,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 00:55:41,368 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:55:41,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:55:41,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:55:41,369 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:55:41,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:55:41,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1922469070, now seen corresponding path program 1 times [2020-08-19 00:55:41,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:55:41,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791524773] [2020-08-19 00:55:41,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:55:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:41,625 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:55:41,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:55:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:41,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:55:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:41,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:55:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:41,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:55:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:41,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:55:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:41,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 00:55:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:41,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:55:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:41,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:55:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:41,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:55:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:41,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 00:55:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:41,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-19 00:55:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:41,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:55:41,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791524773] [2020-08-19 00:55:41,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:55:41,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 00:55:41,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289808691] [2020-08-19 00:55:41,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 00:55:41,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:55:41,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 00:55:41,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 00:55:41,707 INFO L87 Difference]: Start difference. First operand 145 states and 170 transitions. Second operand 6 states. [2020-08-19 00:55:42,029 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:55:43,205 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:55:44,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:55:44,040 INFO L93 Difference]: Finished difference Result 404 states and 500 transitions. [2020-08-19 00:55:44,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 00:55:44,040 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-08-19 00:55:44,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:55:44,045 INFO L225 Difference]: With dead ends: 404 [2020-08-19 00:55:44,045 INFO L226 Difference]: Without dead ends: 283 [2020-08-19 00:55:44,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-19 00:55:44,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-08-19 00:55:44,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 240. [2020-08-19 00:55:44,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-19 00:55:44,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 272 transitions. [2020-08-19 00:55:44,106 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 272 transitions. Word has length 70 [2020-08-19 00:55:44,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:55:44,106 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 272 transitions. [2020-08-19 00:55:44,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 00:55:44,107 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 272 transitions. [2020-08-19 00:55:44,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 00:55:44,108 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:55:44,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:55:44,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:55:44,108 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:55:44,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:55:44,109 INFO L82 PathProgramCache]: Analyzing trace with hash 371744810, now seen corresponding path program 1 times [2020-08-19 00:55:44,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:55:44,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355175137] [2020-08-19 00:55:44,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:55:44,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:44,386 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:55:44,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:55:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:44,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:55:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:44,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:55:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:44,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:55:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:44,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:55:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:44,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 00:55:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:44,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:55:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:44,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:55:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:44,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:55:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:44,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:55:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:44,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:55:44,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:44,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 00:55:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:44,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 00:55:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:44,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:55:44,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355175137] [2020-08-19 00:55:44,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:55:44,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:55:44,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229149779] [2020-08-19 00:55:44,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:55:44,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:55:44,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:55:44,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:55:44,554 INFO L87 Difference]: Start difference. First operand 240 states and 272 transitions. Second operand 8 states. [2020-08-19 00:55:44,928 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:55:45,929 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:55:46,302 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:55:46,860 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:55:47,094 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:55:47,363 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:55:48,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:55:48,532 INFO L93 Difference]: Finished difference Result 718 states and 872 transitions. [2020-08-19 00:55:48,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 00:55:48,533 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-08-19 00:55:48,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:55:48,544 INFO L225 Difference]: With dead ends: 718 [2020-08-19 00:55:48,544 INFO L226 Difference]: Without dead ends: 502 [2020-08-19 00:55:48,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-19 00:55:48,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-08-19 00:55:48,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 435. [2020-08-19 00:55:48,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-08-19 00:55:48,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 494 transitions. [2020-08-19 00:55:48,664 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 494 transitions. Word has length 84 [2020-08-19 00:55:48,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:55:48,664 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 494 transitions. [2020-08-19 00:55:48,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:55:48,665 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 494 transitions. [2020-08-19 00:55:48,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 00:55:48,666 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:55:48,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:55:48,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:55:48,667 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:55:48,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:55:48,667 INFO L82 PathProgramCache]: Analyzing trace with hash 861472934, now seen corresponding path program 1 times [2020-08-19 00:55:48,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:55:48,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897509832] [2020-08-19 00:55:48,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:55:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:48,940 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:55:48,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:55:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:48,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:55:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:48,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:55:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:48,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:55:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:48,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:55:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:48,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:55:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:49,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:55:49,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:49,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:55:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:49,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:55:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:49,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:55:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:49,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:55:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:49,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:55:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:49,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 00:55:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:49,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 00:55:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:49,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:55:49,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897509832] [2020-08-19 00:55:49,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:55:49,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:55:49,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334447864] [2020-08-19 00:55:49,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:55:49,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:55:49,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:55:49,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:55:49,074 INFO L87 Difference]: Start difference. First operand 435 states and 494 transitions. Second operand 9 states. [2020-08-19 00:55:49,493 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:55:50,642 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:55:50,922 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:55:51,958 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:55:52,212 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:55:52,433 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:55:52,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:55:52,819 INFO L93 Difference]: Finished difference Result 544 states and 674 transitions. [2020-08-19 00:55:52,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 00:55:52,820 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-19 00:55:52,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:55:52,824 INFO L225 Difference]: With dead ends: 544 [2020-08-19 00:55:52,825 INFO L226 Difference]: Without dead ends: 541 [2020-08-19 00:55:52,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 00:55:52,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2020-08-19 00:55:52,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 435. [2020-08-19 00:55:52,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-08-19 00:55:52,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 493 transitions. [2020-08-19 00:55:52,913 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 493 transitions. Word has length 88 [2020-08-19 00:55:52,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:55:52,914 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 493 transitions. [2020-08-19 00:55:52,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:55:52,914 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 493 transitions. [2020-08-19 00:55:52,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-19 00:55:52,916 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:55:52,916 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:55:52,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:55:52,917 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:55:52,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:55:52,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1149093276, now seen corresponding path program 1 times [2020-08-19 00:55:52,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:55:52,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054625756] [2020-08-19 00:55:52,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:55:52,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:53,173 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:55:53,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:55:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:53,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:55:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:53,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:55:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:53,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:55:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:53,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:55:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:53,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:55:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:53,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:55:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:53,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:55:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:53,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:55:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:53,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:55:53,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:53,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:55:53,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:53,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:55:53,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:53,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:55:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:53,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:55:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:53,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:55:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:53,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 00:55:53,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:53,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-19 00:55:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:53,336 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 00:55:53,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054625756] [2020-08-19 00:55:53,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:55:53,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:55:53,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925729468] [2020-08-19 00:55:53,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:55:53,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:55:53,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:55:53,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:55:53,344 INFO L87 Difference]: Start difference. First operand 435 states and 493 transitions. Second operand 9 states. [2020-08-19 00:55:54,296 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:55:54,541 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:55:54,790 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:55:55,021 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:55:56,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:55:56,270 INFO L93 Difference]: Finished difference Result 960 states and 1180 transitions. [2020-08-19 00:55:56,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 00:55:56,274 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2020-08-19 00:55:56,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:55:56,280 INFO L225 Difference]: With dead ends: 960 [2020-08-19 00:55:56,280 INFO L226 Difference]: Without dead ends: 549 [2020-08-19 00:55:56,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:55:56,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2020-08-19 00:55:56,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 445. [2020-08-19 00:55:56,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-08-19 00:55:56,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 503 transitions. [2020-08-19 00:55:56,370 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 503 transitions. Word has length 104 [2020-08-19 00:55:56,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:55:56,370 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 503 transitions. [2020-08-19 00:55:56,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:55:56,371 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 503 transitions. [2020-08-19 00:55:56,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-19 00:55:56,373 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:55:56,373 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:55:56,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 00:55:56,374 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:55:56,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:55:56,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1502181658, now seen corresponding path program 1 times [2020-08-19 00:55:56,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:55:56,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651349975] [2020-08-19 00:55:56,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:55:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,678 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:55:56,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:55:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:55:56,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:55:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:55:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:55:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:55:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:55:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:55:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:55:56,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:55:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:55:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:55:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:55:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:55:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:55:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 00:55:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-19 00:55:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 00:55:56,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651349975] [2020-08-19 00:55:56,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:55:56,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 00:55:56,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604767544] [2020-08-19 00:55:56,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 00:55:56,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:55:56,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 00:55:56,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 00:55:56,882 INFO L87 Difference]: Start difference. First operand 445 states and 503 transitions. Second operand 11 states. [2020-08-19 00:55:57,369 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:55:57,607 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:55:57,825 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:55:58,439 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:55:58,704 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:55:58,932 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:56:00,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:56:00,334 INFO L93 Difference]: Finished difference Result 980 states and 1202 transitions. [2020-08-19 00:56:00,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 00:56:00,335 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-08-19 00:56:00,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:56:00,339 INFO L225 Difference]: With dead ends: 980 [2020-08-19 00:56:00,339 INFO L226 Difference]: Without dead ends: 559 [2020-08-19 00:56:00,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:56:00,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-08-19 00:56:00,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 453. [2020-08-19 00:56:00,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-08-19 00:56:00,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 511 transitions. [2020-08-19 00:56:00,439 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 511 transitions. Word has length 104 [2020-08-19 00:56:00,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:56:00,440 INFO L479 AbstractCegarLoop]: Abstraction has 453 states and 511 transitions. [2020-08-19 00:56:00,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 00:56:00,440 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 511 transitions. [2020-08-19 00:56:00,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-19 00:56:00,442 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:56:00,442 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:56:00,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 00:56:00,443 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:56:00,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:56:00,443 INFO L82 PathProgramCache]: Analyzing trace with hash -368991065, now seen corresponding path program 1 times [2020-08-19 00:56:00,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:56:00,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578650078] [2020-08-19 00:56:00,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:56:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:00,729 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:56:00,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:56:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:00,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:56:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:00,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:56:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:00,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:56:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:00,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:56:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:00,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:56:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:00,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:56:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:00,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:56:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:00,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:56:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:00,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:56:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:00,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:56:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:00,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:56:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:00,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:56:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:00,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:56:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:00,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:56:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:00,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 00:56:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:00,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-19 00:56:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:00,897 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 00:56:00,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578650078] [2020-08-19 00:56:00,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:56:00,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 00:56:00,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499977459] [2020-08-19 00:56:00,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 00:56:00,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:56:00,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 00:56:00,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:56:00,899 INFO L87 Difference]: Start difference. First operand 453 states and 511 transitions. Second operand 7 states. [2020-08-19 00:56:01,367 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:56:01,884 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:56:04,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:56:04,384 INFO L93 Difference]: Finished difference Result 1342 states and 1702 transitions. [2020-08-19 00:56:04,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 00:56:04,385 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-08-19 00:56:04,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:56:04,391 INFO L225 Difference]: With dead ends: 1342 [2020-08-19 00:56:04,391 INFO L226 Difference]: Without dead ends: 913 [2020-08-19 00:56:04,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-19 00:56:04,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2020-08-19 00:56:04,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 793. [2020-08-19 00:56:04,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-08-19 00:56:04,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 929 transitions. [2020-08-19 00:56:04,563 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 929 transitions. Word has length 104 [2020-08-19 00:56:04,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:56:04,569 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 929 transitions. [2020-08-19 00:56:04,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 00:56:04,570 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 929 transitions. [2020-08-19 00:56:04,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 00:56:04,576 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:56:04,576 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:56:04,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 00:56:04,577 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:56:04,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:56:04,578 INFO L82 PathProgramCache]: Analyzing trace with hash 38573473, now seen corresponding path program 1 times [2020-08-19 00:56:04,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:56:04,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997396764] [2020-08-19 00:56:04,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:56:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:04,882 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:56:04,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:56:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:04,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:56:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:04,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:56:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:04,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:56:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:04,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:56:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:04,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 00:56:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:04,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:56:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:04,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:56:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:04,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:56:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:05,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:56:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:05,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:56:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:05,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:56:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:05,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:56:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:05,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:56:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:05,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:56:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:05,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:56:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:05,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 00:56:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:05,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 00:56:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:05,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 00:56:05,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997396764] [2020-08-19 00:56:05,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:56:05,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-19 00:56:05,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536582646] [2020-08-19 00:56:05,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-19 00:56:05,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:56:05,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-19 00:56:05,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-19 00:56:05,315 INFO L87 Difference]: Start difference. First operand 793 states and 929 transitions. Second operand 17 states. [2020-08-19 00:56:06,095 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:56:06,404 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:56:06,656 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:56:06,887 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:56:07,524 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:56:08,660 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:56:08,992 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:56:09,279 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:56:09,564 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:56:09,922 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:56:10,210 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:56:10,756 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-19 00:56:11,354 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-19 00:56:13,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:56:13,927 INFO L93 Difference]: Finished difference Result 1649 states and 2014 transitions. [2020-08-19 00:56:13,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-19 00:56:13,927 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 108 [2020-08-19 00:56:13,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:56:13,933 INFO L225 Difference]: With dead ends: 1649 [2020-08-19 00:56:13,933 INFO L226 Difference]: Without dead ends: 880 [2020-08-19 00:56:13,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=342, Invalid=1380, Unknown=0, NotChecked=0, Total=1722 [2020-08-19 00:56:13,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2020-08-19 00:56:14,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 763. [2020-08-19 00:56:14,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 763 states. [2020-08-19 00:56:14,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 880 transitions. [2020-08-19 00:56:14,094 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 880 transitions. Word has length 108 [2020-08-19 00:56:14,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:56:14,095 INFO L479 AbstractCegarLoop]: Abstraction has 763 states and 880 transitions. [2020-08-19 00:56:14,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-19 00:56:14,095 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 880 transitions. [2020-08-19 00:56:14,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-08-19 00:56:14,099 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:56:14,100 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:56:14,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 00:56:14,100 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:56:14,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:56:14,101 INFO L82 PathProgramCache]: Analyzing trace with hash 118260142, now seen corresponding path program 1 times [2020-08-19 00:56:14,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:56:14,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126712976] [2020-08-19 00:56:14,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:56:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:14,440 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:56:14,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:56:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:14,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:56:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:14,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:56:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:14,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:56:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:14,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:56:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:14,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 00:56:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:14,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:56:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:14,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:56:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:14,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:56:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:14,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:56:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:14,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:56:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:14,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:56:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:14,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:56:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:14,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:56:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:14,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:56:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:14,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:56:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:14,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 00:56:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:14,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:56:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:14,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-19 00:56:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:14,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-19 00:56:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:14,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-19 00:56:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:14,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:56:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:14,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:56:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:14,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 00:56:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:14,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:56:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:14,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:56:14,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:14,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 00:56:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:14,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:56:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:14,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-19 00:56:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:14,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-19 00:56:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:14,782 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-19 00:56:14,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126712976] [2020-08-19 00:56:14,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:56:14,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-19 00:56:14,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157729641] [2020-08-19 00:56:14,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-19 00:56:14,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:56:14,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-19 00:56:14,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:56:14,785 INFO L87 Difference]: Start difference. First operand 763 states and 880 transitions. Second operand 18 states. [2020-08-19 00:56:15,515 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:56:15,859 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:56:16,119 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:56:16,390 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:56:17,091 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:56:18,189 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:56:18,506 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:56:18,767 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:56:19,022 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:56:19,343 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:56:19,609 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:56:20,848 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:56:21,086 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:56:21,352 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:56:21,592 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:56:23,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:56:23,018 INFO L93 Difference]: Finished difference Result 1402 states and 1720 transitions. [2020-08-19 00:56:23,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-19 00:56:23,024 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 178 [2020-08-19 00:56:23,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:56:23,026 INFO L225 Difference]: With dead ends: 1402 [2020-08-19 00:56:23,026 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 00:56:23,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=387, Invalid=1775, Unknown=0, NotChecked=0, Total=2162 [2020-08-19 00:56:23,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 00:56:23,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 00:56:23,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 00:56:23,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 00:56:23,032 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 178 [2020-08-19 00:56:23,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:56:23,032 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 00:56:23,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-19 00:56:23,033 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 00:56:23,033 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 00:56:23,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 00:56:23,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 00:56:23,807 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 200 [2020-08-19 00:56:23,918 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 200 [2020-08-19 00:56:24,040 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 201 [2020-08-19 00:56:24,283 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 201 [2020-08-19 00:56:24,430 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 200 [2020-08-19 00:56:24,599 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 198 [2020-08-19 00:56:26,156 WARN L193 SmtUtils]: Spent 835.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 257 [2020-08-19 00:56:26,859 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 257 [2020-08-19 00:56:27,394 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 259 [2020-08-19 00:56:29,752 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 257