/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=LOWLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 18:29:55,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:29:55,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:29:55,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:29:55,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:29:55,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:29:55,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:29:55,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:29:55,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:29:55,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:29:55,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:29:55,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:29:55,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:29:55,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:29:55,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:29:55,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:29:55,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:29:55,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:29:55,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:29:55,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:29:55,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:29:55,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:29:55,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:29:55,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:29:55,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 18:29:55,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 18:29:55,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 18:29:55,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 18:29:55,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 18:29:55,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 18:29:55,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 18:29:55,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 18:29:55,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 18:29:55,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 18:29:55,471 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 18:29:55,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 18:29:55,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 18:29:55,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 18:29:55,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:29:55,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:29:55,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:29:55,475 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 18:29:55,497 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:29:55,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:29:55,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:29:55,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:29:55,499 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:29:55,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:29:55,500 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:29:55,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:29:55,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:29:55,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:29:55,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:29:55,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:29:55,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:29:55,501 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:29:55,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:29:55,501 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:29:55,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:29:55,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:29:55,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:29:55,502 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:29:55,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:29:55,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:29:55,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:29:55,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:29:55,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:29:55,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:29:55,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:29:55,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:29:55,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:29:55,504 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=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 18:29:55,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:29:55,828 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:29:55,831 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:29:55,833 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:29:55,833 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:29:55,834 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product46.cil.c [2020-08-18 18:29:55,894 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3cccd471/52c61e2be77c4a12873a3b292223e55f/FLAG4eb352193 [2020-08-18 18:29:56,421 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:29:56,422 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product46.cil.c [2020-08-18 18:29:56,443 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3cccd471/52c61e2be77c4a12873a3b292223e55f/FLAG4eb352193 [2020-08-18 18:29:56,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3cccd471/52c61e2be77c4a12873a3b292223e55f [2020-08-18 18:29:56,763 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:29:56,765 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:29:56,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:29:56,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:29:56,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:29:56,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:29:56" (1/1) ... [2020-08-18 18:29:56,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17a1b9fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:29:56, skipping insertion in model container [2020-08-18 18:29:56,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:29:56" (1/1) ... [2020-08-18 18:29:56,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:29:56,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:29:57,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:29:57,282 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:29:57,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:29:57,475 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:29:57,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:29:57 WrapperNode [2020-08-18 18:29:57,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:29:57,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:29:57,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:29:57,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:29:57,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:29:57" (1/1) ... [2020-08-18 18:29:57,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:29:57" (1/1) ... [2020-08-18 18:29:57,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:29:57" (1/1) ... [2020-08-18 18:29:57,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:29:57" (1/1) ... [2020-08-18 18:29:57,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:29:57" (1/1) ... [2020-08-18 18:29:57,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:29:57" (1/1) ... [2020-08-18 18:29:57,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:29:57" (1/1) ... [2020-08-18 18:29:57,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:29:57,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:29:57,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:29:57,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:29:57,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:29:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:29:57,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:29:57,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:29:57,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 18:29:57,644 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 18:29:57,644 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 18:29:57,645 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 18:29:57,645 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 18:29:57,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 18:29:57,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 18:29:57,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 18:29:57,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 18:29:57,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 18:29:57,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 18:29:57,646 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 18:29:57,647 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 18:29:57,647 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 18:29:57,647 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 18:29:57,647 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 18:29:57,648 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 18:29:57,648 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 18:29:57,648 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 18:29:57,648 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 18:29:57,648 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 18:29:57,649 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 18:29:57,649 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:29:57,650 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 18:29:57,650 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 18:29:57,650 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 18:29:57,651 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 18:29:57,651 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 18:29:57,651 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 18:29:57,651 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 18:29:57,651 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 18:29:57,651 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 18:29:57,651 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 18:29:57,651 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 18:29:57,652 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 18:29:57,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 18:29:57,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 18:29:57,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 18:29:57,652 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 18:29:57,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:29:57,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 18:29:57,653 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 18:29:57,654 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 18:29:57,654 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 18:29:57,654 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 18:29:57,654 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 18:29:57,654 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 18:29:57,654 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 18:29:57,654 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 18:29:57,654 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 18:29:57,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 18:29:57,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 18:29:57,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 18:29:57,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 18:29:57,655 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 18:29:57,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 18:29:57,656 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 18:29:57,656 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 18:29:57,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 18:29:57,656 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 18:29:57,656 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 18:29:57,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 18:29:57,656 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 18:29:57,656 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 18:29:57,656 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 18:29:57,656 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 18:29:57,657 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 18:29:57,657 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 18:29:57,657 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 18:29:57,657 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 18:29:57,658 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 18:29:57,658 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 18:29:57,658 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 18:29:57,658 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 18:29:57,659 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 18:29:57,659 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 18:29:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 18:29:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 18:29:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:29:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 18:29:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 18:29:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 18:29:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 18:29:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 18:29:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 18:29:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 18:29:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 18:29:57,661 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 18:29:57,661 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 18:29:57,661 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 18:29:57,661 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 18:29:57,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:29:57,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 18:29:57,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:29:58,799 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:29:58,799 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 18:29:58,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:29:58 BoogieIcfgContainer [2020-08-18 18:29:58,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:29:58,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:29:58,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:29:58,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:29:58,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:29:56" (1/3) ... [2020-08-18 18:29:58,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3d052e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:29:58, skipping insertion in model container [2020-08-18 18:29:58,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:29:57" (2/3) ... [2020-08-18 18:29:58,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3d052e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:29:58, skipping insertion in model container [2020-08-18 18:29:58,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:29:58" (3/3) ... [2020-08-18 18:29:58,820 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product46.cil.c [2020-08-18 18:29:58,830 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:29:58,839 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:29:58,855 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:29:58,885 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:29:58,886 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:29:58,886 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:29:58,886 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:29:58,887 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:29:58,887 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:29:58,887 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:29:58,888 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:29:58,912 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-08-18 18:29:58,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 18:29:58,921 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:29:58,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:29:58,923 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:29:58,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:29:58,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1550424879, now seen corresponding path program 1 times [2020-08-18 18:29:58,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:29:58,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326837662] [2020-08-18 18:29:58,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:29:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:59,637 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:29:59,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:29:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:59,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:29:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:59,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:29:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:59,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:29:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:59,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:29:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:59,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:29:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:59,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 18:29:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:59,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 18:29:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:29:59,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:29:59,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326837662] [2020-08-18 18:29:59,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:29:59,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:29:59,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488738389] [2020-08-18 18:29:59,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:29:59,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:29:59,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:29:59,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:29:59,774 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 4 states. [2020-08-18 18:30:01,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:01,027 INFO L93 Difference]: Finished difference Result 312 states and 407 transitions. [2020-08-18 18:30:01,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 18:30:01,029 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 18:30:01,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:01,056 INFO L225 Difference]: With dead ends: 312 [2020-08-18 18:30:01,057 INFO L226 Difference]: Without dead ends: 174 [2020-08-18 18:30:01,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:30:01,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-08-18 18:30:01,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 139. [2020-08-18 18:30:01,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-18 18:30:01,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2020-08-18 18:30:01,176 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 51 [2020-08-18 18:30:01,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:01,176 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2020-08-18 18:30:01,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:30:01,177 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2020-08-18 18:30:01,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 18:30:01,180 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:01,180 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:30:01,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:30:01,181 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:01,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:01,182 INFO L82 PathProgramCache]: Analyzing trace with hash 2147140265, now seen corresponding path program 1 times [2020-08-18 18:30:01,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:01,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318644106] [2020-08-18 18:30:01,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:01,532 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:01,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:01,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:01,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:01,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:01,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:01,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:01,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:30:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:01,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 18:30:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:01,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:30:01,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318644106] [2020-08-18 18:30:01,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:01,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:30:01,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59785214] [2020-08-18 18:30:01,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:30:01,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:01,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:30:01,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:30:01,618 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand 5 states. [2020-08-18 18:30:02,069 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:03,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:03,100 INFO L93 Difference]: Finished difference Result 253 states and 314 transitions. [2020-08-18 18:30:03,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 18:30:03,101 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 18:30:03,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:03,105 INFO L225 Difference]: With dead ends: 253 [2020-08-18 18:30:03,107 INFO L226 Difference]: Without dead ends: 164 [2020-08-18 18:30:03,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 18:30:03,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-18 18:30:03,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 130. [2020-08-18 18:30:03,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-18 18:30:03,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 152 transitions. [2020-08-18 18:30:03,178 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 152 transitions. Word has length 52 [2020-08-18 18:30:03,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:03,179 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 152 transitions. [2020-08-18 18:30:03,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 18:30:03,180 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 152 transitions. [2020-08-18 18:30:03,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 18:30:03,192 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:03,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:30:03,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:30:03,193 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:03,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:03,193 INFO L82 PathProgramCache]: Analyzing trace with hash 871775649, now seen corresponding path program 1 times [2020-08-18 18:30:03,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:03,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869316910] [2020-08-18 18:30:03,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:03,580 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:03,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:03,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:03,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:03,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:03,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:03,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:03,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:03,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 18:30:03,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:03,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 18:30:03,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:03,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:30:03,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869316910] [2020-08-18 18:30:03,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:03,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 18:30:03,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624472276] [2020-08-18 18:30:03,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:30:03,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:03,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:30:03,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:30:03,712 INFO L87 Difference]: Start difference. First operand 130 states and 152 transitions. Second operand 9 states. [2020-08-18 18:30:04,107 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:04,441 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:04,733 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:04,981 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:06,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:06,358 INFO L93 Difference]: Finished difference Result 266 states and 333 transitions. [2020-08-18 18:30:06,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 18:30:06,360 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-18 18:30:06,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:06,365 INFO L225 Difference]: With dead ends: 266 [2020-08-18 18:30:06,365 INFO L226 Difference]: Without dead ends: 164 [2020-08-18 18:30:06,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 18:30:06,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-18 18:30:06,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 130. [2020-08-18 18:30:06,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-18 18:30:06,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2020-08-18 18:30:06,436 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 57 [2020-08-18 18:30:06,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:06,438 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2020-08-18 18:30:06,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:30:06,438 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2020-08-18 18:30:06,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 18:30:06,441 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:06,441 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] [2020-08-18 18:30:06,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 18:30:06,442 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:06,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:06,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1442711131, now seen corresponding path program 1 times [2020-08-18 18:30:06,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:06,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755193195] [2020-08-18 18:30:06,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:06,808 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:06,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:06,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:06,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:06,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:06,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:06,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:06,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:30:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:06,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:06,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:06,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 18:30:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:06,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 18:30:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:06,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:30:06,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755193195] [2020-08-18 18:30:06,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:06,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 18:30:06,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975726889] [2020-08-18 18:30:06,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 18:30:06,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:06,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 18:30:06,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 18:30:06,909 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand 7 states. [2020-08-18 18:30:07,255 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:08,472 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:09,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:09,121 INFO L93 Difference]: Finished difference Result 370 states and 466 transitions. [2020-08-18 18:30:09,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 18:30:09,121 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-08-18 18:30:09,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:09,126 INFO L225 Difference]: With dead ends: 370 [2020-08-18 18:30:09,126 INFO L226 Difference]: Without dead ends: 268 [2020-08-18 18:30:09,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 18:30:09,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-08-18 18:30:09,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 219. [2020-08-18 18:30:09,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-08-18 18:30:09,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 251 transitions. [2020-08-18 18:30:09,183 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 251 transitions. Word has length 70 [2020-08-18 18:30:09,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:09,184 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 251 transitions. [2020-08-18 18:30:09,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 18:30:09,184 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 251 transitions. [2020-08-18 18:30:09,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 18:30:09,185 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:09,186 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] [2020-08-18 18:30:09,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 18:30:09,186 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:09,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:09,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1583652076, now seen corresponding path program 1 times [2020-08-18 18:30:09,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:09,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338029145] [2020-08-18 18:30:09,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:09,456 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:09,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:09,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:09,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:09,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:09,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:09,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:09,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:30:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:09,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:09,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:09,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:09,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:09,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:09,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 18:30:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:09,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 18:30:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:09,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:30:09,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338029145] [2020-08-18 18:30:09,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:09,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 18:30:09,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59072520] [2020-08-18 18:30:09,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:30:09,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:09,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:30:09,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:30:09,587 INFO L87 Difference]: Start difference. First operand 219 states and 251 transitions. Second operand 9 states. [2020-08-18 18:30:09,964 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:10,992 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:11,323 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:11,902 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:12,137 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:13,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:13,284 INFO L93 Difference]: Finished difference Result 653 states and 819 transitions. [2020-08-18 18:30:13,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 18:30:13,284 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-18 18:30:13,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:13,289 INFO L225 Difference]: With dead ends: 653 [2020-08-18 18:30:13,289 INFO L226 Difference]: Without dead ends: 462 [2020-08-18 18:30:13,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 18:30:13,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-08-18 18:30:13,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 386. [2020-08-18 18:30:13,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-08-18 18:30:13,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 442 transitions. [2020-08-18 18:30:13,379 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 442 transitions. Word has length 84 [2020-08-18 18:30:13,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:13,380 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 442 transitions. [2020-08-18 18:30:13,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:30:13,380 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 442 transitions. [2020-08-18 18:30:13,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 18:30:13,381 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:13,382 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] [2020-08-18 18:30:13,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 18:30:13,382 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:13,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:13,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1422526648, now seen corresponding path program 1 times [2020-08-18 18:30:13,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:13,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703304658] [2020-08-18 18:30:13,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,644 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:13,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:13,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 18:30:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 18:30:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 18:30:13,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 18:30:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:13,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:30:13,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703304658] [2020-08-18 18:30:13,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:13,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 18:30:13,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768457300] [2020-08-18 18:30:13,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 18:30:13,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:13,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 18:30:13,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 18:30:13,821 INFO L87 Difference]: Start difference. First operand 386 states and 442 transitions. Second operand 10 states. [2020-08-18 18:30:14,188 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:15,441 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:16,491 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:16,762 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:17,008 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:17,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:17,443 INFO L93 Difference]: Finished difference Result 858 states and 1059 transitions. [2020-08-18 18:30:17,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 18:30:17,444 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-18 18:30:17,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:17,448 INFO L225 Difference]: With dead ends: 858 [2020-08-18 18:30:17,449 INFO L226 Difference]: Without dead ends: 500 [2020-08-18 18:30:17,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-18 18:30:17,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-08-18 18:30:17,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 385. [2020-08-18 18:30:17,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-18 18:30:17,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 439 transitions. [2020-08-18 18:30:17,526 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 439 transitions. Word has length 88 [2020-08-18 18:30:17,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:17,527 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 439 transitions. [2020-08-18 18:30:17,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 18:30:17,527 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 439 transitions. [2020-08-18 18:30:17,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-18 18:30:17,529 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:17,529 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] [2020-08-18 18:30:17,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 18:30:17,530 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:17,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:17,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1956386739, now seen corresponding path program 1 times [2020-08-18 18:30:17,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:17,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790423460] [2020-08-18 18:30:17,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:17,783 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:17,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:17,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:17,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:17,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:17,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:17,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:17,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:17,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 18:30:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:17,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 18:30:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:17,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:17,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:17,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:17,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:17,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:17,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:17,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:17,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 18:30:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:17,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 18:30:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:17,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:30:17,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790423460] [2020-08-18 18:30:17,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:17,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 18:30:17,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409113787] [2020-08-18 18:30:17,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 18:30:17,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:17,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 18:30:17,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 18:30:17,987 INFO L87 Difference]: Start difference. First operand 385 states and 439 transitions. Second operand 10 states. [2020-08-18 18:30:18,986 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:19,223 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 18:30:19,469 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:19,695 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:20,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:20,923 INFO L93 Difference]: Finished difference Result 865 states and 1088 transitions. [2020-08-18 18:30:20,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 18:30:20,924 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 104 [2020-08-18 18:30:20,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:20,928 INFO L225 Difference]: With dead ends: 865 [2020-08-18 18:30:20,928 INFO L226 Difference]: Without dead ends: 508 [2020-08-18 18:30:20,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 18:30:20,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-08-18 18:30:21,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 395. [2020-08-18 18:30:21,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-08-18 18:30:21,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 449 transitions. [2020-08-18 18:30:21,031 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 449 transitions. Word has length 104 [2020-08-18 18:30:21,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:21,032 INFO L479 AbstractCegarLoop]: Abstraction has 395 states and 449 transitions. [2020-08-18 18:30:21,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 18:30:21,032 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 449 transitions. [2020-08-18 18:30:21,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-18 18:30:21,034 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:21,034 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] [2020-08-18 18:30:21,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 18:30:21,035 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:21,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:21,035 INFO L82 PathProgramCache]: Analyzing trace with hash -28114037, now seen corresponding path program 1 times [2020-08-18 18:30:21,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:21,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955935385] [2020-08-18 18:30:21,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:21,354 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:21,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:21,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:21,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:21,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:21,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:21,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:21,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 18:30:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:21,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 18:30:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:21,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:21,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:21,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:21,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:21,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:21,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:21,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:21,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:21,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:21,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 18:30:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:21,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 18:30:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:21,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:30:21,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955935385] [2020-08-18 18:30:21,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:21,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 18:30:21,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952212213] [2020-08-18 18:30:21,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 18:30:21,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:21,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 18:30:21,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 18:30:21,607 INFO L87 Difference]: Start difference. First operand 395 states and 449 transitions. Second operand 12 states. [2020-08-18 18:30:22,279 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:22,521 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:22,763 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:23,489 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:23,734 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:23,967 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:25,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:25,459 INFO L93 Difference]: Finished difference Result 885 states and 1110 transitions. [2020-08-18 18:30:25,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 18:30:25,460 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 104 [2020-08-18 18:30:25,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:25,465 INFO L225 Difference]: With dead ends: 885 [2020-08-18 18:30:25,465 INFO L226 Difference]: Without dead ends: 518 [2020-08-18 18:30:25,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 18:30:25,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2020-08-18 18:30:25,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 403. [2020-08-18 18:30:25,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-08-18 18:30:25,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 457 transitions. [2020-08-18 18:30:25,546 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 457 transitions. Word has length 104 [2020-08-18 18:30:25,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:25,547 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 457 transitions. [2020-08-18 18:30:25,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 18:30:25,547 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 457 transitions. [2020-08-18 18:30:25,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-18 18:30:25,551 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:25,551 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] [2020-08-18 18:30:25,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 18:30:25,551 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:25,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:25,552 INFO L82 PathProgramCache]: Analyzing trace with hash -268654166, now seen corresponding path program 1 times [2020-08-18 18:30:25,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:25,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162299055] [2020-08-18 18:30:25,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:25,856 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:25,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:25,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:25,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:25,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:25,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:25,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:25,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 18:30:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:25,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 18:30:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:25,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:25,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:25,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:25,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:26,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:26,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:26,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:26,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 18:30:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:26,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 18:30:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:26,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:30:26,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162299055] [2020-08-18 18:30:26,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:26,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 18:30:26,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090677004] [2020-08-18 18:30:26,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 18:30:26,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:26,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 18:30:26,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:30:26,049 INFO L87 Difference]: Start difference. First operand 403 states and 457 transitions. Second operand 8 states. [2020-08-18 18:30:26,523 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:27,036 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:29,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:29,496 INFO L93 Difference]: Finished difference Result 1233 states and 1597 transitions. [2020-08-18 18:30:29,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 18:30:29,497 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2020-08-18 18:30:29,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:29,503 INFO L225 Difference]: With dead ends: 1233 [2020-08-18 18:30:29,503 INFO L226 Difference]: Without dead ends: 858 [2020-08-18 18:30:29,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-18 18:30:29,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2020-08-18 18:30:29,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 713. [2020-08-18 18:30:29,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-08-18 18:30:29,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 835 transitions. [2020-08-18 18:30:29,671 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 835 transitions. Word has length 104 [2020-08-18 18:30:29,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:29,672 INFO L479 AbstractCegarLoop]: Abstraction has 713 states and 835 transitions. [2020-08-18 18:30:29,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 18:30:29,672 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 835 transitions. [2020-08-18 18:30:29,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 18:30:29,674 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:29,674 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] [2020-08-18 18:30:29,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 18:30:29,675 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:29,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:29,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1852641244, now seen corresponding path program 1 times [2020-08-18 18:30:29,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:29,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161686686] [2020-08-18 18:30:29,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:29,955 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:29,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:29,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:29,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:29,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:29,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:30,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:30,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:30:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:30,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:30:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:30,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 18:30:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:30,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:30,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:30,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:30,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:30,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:30,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:30,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:30,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 18:30:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:30,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 18:30:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:30,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 18:30:30,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161686686] [2020-08-18 18:30:30,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:30:30,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 18:30:30,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865281419] [2020-08-18 18:30:30,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 18:30:30,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:30,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 18:30:30,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-18 18:30:30,326 INFO L87 Difference]: Start difference. First operand 713 states and 835 transitions. Second operand 18 states. [2020-08-18 18:30:30,791 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:31,121 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 18:30:31,375 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:30:31,609 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:30:32,325 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:33,386 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:30:33,723 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:30:34,016 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:30:34,309 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:30:34,643 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:30:34,921 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:30:35,482 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-08-18 18:30:36,050 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-08-18 18:30:38,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:38,293 INFO L93 Difference]: Finished difference Result 1515 states and 1873 transitions. [2020-08-18 18:30:38,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-08-18 18:30:38,294 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 108 [2020-08-18 18:30:38,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:38,299 INFO L225 Difference]: With dead ends: 1515 [2020-08-18 18:30:38,300 INFO L226 Difference]: Without dead ends: 830 [2020-08-18 18:30:38,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=554, Invalid=2308, Unknown=0, NotChecked=0, Total=2862 [2020-08-18 18:30:38,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2020-08-18 18:30:38,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 694. [2020-08-18 18:30:38,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-08-18 18:30:38,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 803 transitions. [2020-08-18 18:30:38,445 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 803 transitions. Word has length 108 [2020-08-18 18:30:38,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:38,445 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 803 transitions. [2020-08-18 18:30:38,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 18:30:38,446 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 803 transitions. [2020-08-18 18:30:38,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-18 18:30:38,449 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:38,449 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:30:38,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 18:30:38,450 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:38,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:38,450 INFO L82 PathProgramCache]: Analyzing trace with hash 760447467, now seen corresponding path program 1 times [2020-08-18 18:30:38,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:38,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219854554] [2020-08-18 18:30:38,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:38,852 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:38,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:38,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:38,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:38,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:38,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:38,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:38,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:38,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:38,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:30:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:38,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 18:30:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:38,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:38,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:38,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:38,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:38,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:38,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:38,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:38,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:38,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:38,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 18:30:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:38,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:39,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 18:30:39,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:39,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 18:30:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:39,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 18:30:39,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:39,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:39,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:39,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 18:30:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:39,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:39,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 18:30:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:39,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-18 18:30:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:39,159 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-18 18:30:39,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219854554] [2020-08-18 18:30:39,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:30:39,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 18:30:39,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995049798] [2020-08-18 18:30:39,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 18:30:39,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:39,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 18:30:39,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-18 18:30:39,161 INFO L87 Difference]: Start difference. First operand 694 states and 803 transitions. Second operand 19 states. [2020-08-18 18:30:39,589 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:39,948 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 18:30:40,204 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:30:40,451 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:30:41,201 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:42,284 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:42,612 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:42,867 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:43,137 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:43,447 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:43,711 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:44,952 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:45,198 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:45,482 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:45,719 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:46,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:46,643 INFO L93 Difference]: Finished difference Result 1298 states and 1607 transitions. [2020-08-18 18:30:46,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-18 18:30:46,644 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 160 [2020-08-18 18:30:46,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:46,645 INFO L225 Difference]: With dead ends: 1298 [2020-08-18 18:30:46,645 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 18:30:46,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=561, Invalid=2519, Unknown=0, NotChecked=0, Total=3080 [2020-08-18 18:30:46,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 18:30:46,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 18:30:46,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 18:30:46,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 18:30:46,651 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 160 [2020-08-18 18:30:46,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:46,652 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 18:30:46,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 18:30:46,652 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 18:30:46,652 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 18:30:46,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 18:30:46,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 18:30:49,612 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 326 DAG size of output: 274 [2020-08-18 18:30:49,866 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 204 [2020-08-18 18:30:50,029 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 201 [2020-08-18 18:30:50,159 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 205 [2020-08-18 18:30:50,568 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 201 [2020-08-18 18:30:50,674 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 204 [2020-08-18 18:30:52,637 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 278 [2020-08-18 18:30:53,110 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 260 [2020-08-18 18:30:53,565 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 260