/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:43:12,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:43:12,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:43:12,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:43:12,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:43:12,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:43:12,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:43:12,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:43:12,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:43:12,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:43:12,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:43:12,414 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:43:12,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:43:12,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:43:12,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:43:12,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:43:12,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:43:12,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:43:12,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:43:12,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:43:12,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:43:12,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:43:12,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:43:12,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:43:12,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:43:12,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:43:12,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:43:12,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:43:12,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:43:12,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:43:12,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:43:12,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:43:12,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:43:12,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:43:12,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:43:12,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:43:12,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:43:12,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:43:12,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:43:12,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:43:12,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:43:12,464 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 06:43:12,486 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:43:12,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:43:12,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:43:12,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:43:12,488 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:43:12,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:43:12,488 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:43:12,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:43:12,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:43:12,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:43:12,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:43:12,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:43:12,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:43:12,490 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:43:12,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:43:12,490 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:43:12,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:43:12,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:43:12,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:43:12,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:43:12,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:43:12,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:43:12,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:43:12,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:43:12,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:43:12,492 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:43:12,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:43:12,492 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:43:12,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:43:12,493 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=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; [2020-08-19 06:43:12,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:43:12,816 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:43:12,821 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:43:12,824 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:43:12,824 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:43:12,825 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c [2020-08-19 06:43:12,899 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c9de67ec/c79f38fe01ba4dfb978be00566b30ffb/FLAGa4daa1f31 [2020-08-19 06:43:13,520 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:43:13,523 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c [2020-08-19 06:43:13,542 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c9de67ec/c79f38fe01ba4dfb978be00566b30ffb/FLAGa4daa1f31 [2020-08-19 06:43:13,748 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c9de67ec/c79f38fe01ba4dfb978be00566b30ffb [2020-08-19 06:43:13,758 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:43:13,760 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:43:13,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:43:13,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:43:13,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:43:13,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:43:13" (1/1) ... [2020-08-19 06:43:13,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f0f39f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:43:13, skipping insertion in model container [2020-08-19 06:43:13,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:43:13" (1/1) ... [2020-08-19 06:43:13,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:43:13,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:43:14,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:43:14,141 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:43:14,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:43:14,376 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:43:14,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:43:14 WrapperNode [2020-08-19 06:43:14,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:43:14,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:43:14,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:43:14,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:43:14,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:43:14" (1/1) ... [2020-08-19 06:43:14,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:43:14" (1/1) ... [2020-08-19 06:43:14,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:43:14" (1/1) ... [2020-08-19 06:43:14,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:43:14" (1/1) ... [2020-08-19 06:43:14,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:43:14" (1/1) ... [2020-08-19 06:43:14,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:43:14" (1/1) ... [2020-08-19 06:43:14,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:43:14" (1/1) ... [2020-08-19 06:43:14,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:43:14,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:43:14,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:43:14,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:43:14,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:43:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:43:14,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:43:14,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:43:14,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 06:43:14,568 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 06:43:14,568 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 06:43:14,569 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 06:43:14,569 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 06:43:14,569 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 06:43:14,569 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 06:43:14,569 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 06:43:14,569 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 06:43:14,570 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 06:43:14,570 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 06:43:14,570 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 06:43:14,570 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 06:43:14,570 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 06:43:14,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 06:43:14,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 06:43:14,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 06:43:14,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 06:43:14,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 06:43:14,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 06:43:14,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-19 06:43:14,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-19 06:43:14,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-19 06:43:14,572 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 06:43:14,572 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 06:43:14,572 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 06:43:14,572 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 06:43:14,573 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:43:14,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 06:43:14,573 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 06:43:14,573 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 06:43:14,573 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 06:43:14,573 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 06:43:14,574 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 06:43:14,574 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 06:43:14,574 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 06:43:14,574 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 06:43:14,574 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 06:43:14,574 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 06:43:14,574 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 06:43:14,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:43:14,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:43:14,575 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 06:43:14,575 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 06:43:14,575 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 06:43:14,575 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 06:43:14,576 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 06:43:14,576 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 06:43:14,576 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 06:43:14,576 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 06:43:14,576 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 06:43:14,576 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 06:43:14,577 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 06:43:14,577 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 06:43:14,577 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-19 06:43:14,577 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-19 06:43:14,577 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 06:43:14,577 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 06:43:14,578 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 06:43:14,578 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 06:43:14,578 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 06:43:14,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 06:43:14,578 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 06:43:14,578 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 06:43:14,578 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 06:43:14,579 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 06:43:14,579 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 06:43:14,579 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 06:43:14,579 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 06:43:14,579 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 06:43:14,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 06:43:14,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 06:43:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 06:43:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 06:43:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 06:43:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 06:43:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 06:43:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 06:43:14,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 06:43:14,581 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 06:43:14,581 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 06:43:14,581 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 06:43:14,581 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 06:43:14,581 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 06:43:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-19 06:43:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 06:43:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 06:43:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 06:43:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 06:43:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 06:43:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 06:43:14,583 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:43:14,583 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 06:43:14,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:43:14,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 06:43:14,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:43:15,649 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:43:15,649 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 06:43:15,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:43:15 BoogieIcfgContainer [2020-08-19 06:43:15,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:43:15,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:43:15,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:43:15,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:43:15,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:43:13" (1/3) ... [2020-08-19 06:43:15,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61824ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:43:15, skipping insertion in model container [2020-08-19 06:43:15,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:43:14" (2/3) ... [2020-08-19 06:43:15,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61824ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:43:15, skipping insertion in model container [2020-08-19 06:43:15,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:43:15" (3/3) ... [2020-08-19 06:43:15,663 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product40.cil.c [2020-08-19 06:43:15,673 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:43:15,681 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:43:15,695 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:43:15,719 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:43:15,719 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:43:15,720 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:43:15,720 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:43:15,720 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:43:15,721 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:43:15,721 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:43:15,721 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:43:15,743 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2020-08-19 06:43:15,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 06:43:15,754 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:43:15,755 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] [2020-08-19 06:43:15,756 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:43:15,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:43:15,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1231866733, now seen corresponding path program 1 times [2020-08-19 06:43:15,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:43:15,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673815250] [2020-08-19 06:43:15,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:43:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:16,556 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:43:16,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:43:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:16,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:43:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:16,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:43:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:16,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:43:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:16,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:43:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:16,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:43:16,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:16,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 06:43:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:16,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:43:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:16,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:43:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:16,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 06:43:16,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:16,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 06:43:16,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673815250] [2020-08-19 06:43:16,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:43:16,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:43:16,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762588276] [2020-08-19 06:43:16,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:43:16,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:43:16,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:43:16,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:43:16,686 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 4 states. [2020-08-19 06:43:17,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:43:17,901 INFO L93 Difference]: Finished difference Result 324 states and 416 transitions. [2020-08-19 06:43:17,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 06:43:17,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 06:43:17,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:43:17,919 INFO L225 Difference]: With dead ends: 324 [2020-08-19 06:43:17,919 INFO L226 Difference]: Without dead ends: 179 [2020-08-19 06:43:17,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:43:17,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-19 06:43:18,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 146. [2020-08-19 06:43:18,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-19 06:43:18,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 171 transitions. [2020-08-19 06:43:18,046 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 171 transitions. Word has length 59 [2020-08-19 06:43:18,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:43:18,047 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 171 transitions. [2020-08-19 06:43:18,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:43:18,048 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 171 transitions. [2020-08-19 06:43:18,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 06:43:18,060 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:43:18,060 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] [2020-08-19 06:43:18,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:43:18,061 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:43:18,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:43:18,061 INFO L82 PathProgramCache]: Analyzing trace with hash 735941424, now seen corresponding path program 1 times [2020-08-19 06:43:18,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:43:18,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503957443] [2020-08-19 06:43:18,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:43:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:18,476 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:43:18,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:43:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:18,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:43:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:18,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:43:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:18,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:43:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:18,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:43:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:18,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:43:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:18,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 06:43:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:18,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:43:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:18,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 06:43:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:18,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 06:43:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:18,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 06:43:18,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503957443] [2020-08-19 06:43:18,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:43:18,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:43:18,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781119623] [2020-08-19 06:43:18,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:43:18,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:43:18,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:43:18,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:43:18,550 INFO L87 Difference]: Start difference. First operand 146 states and 171 transitions. Second operand 5 states. [2020-08-19 06:43:19,070 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:43:20,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:43:20,056 INFO L93 Difference]: Finished difference Result 259 states and 316 transitions. [2020-08-19 06:43:20,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 06:43:20,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-19 06:43:20,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:43:20,061 INFO L225 Difference]: With dead ends: 259 [2020-08-19 06:43:20,062 INFO L226 Difference]: Without dead ends: 169 [2020-08-19 06:43:20,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 06:43:20,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-19 06:43:20,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 137. [2020-08-19 06:43:20,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-08-19 06:43:20,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 159 transitions. [2020-08-19 06:43:20,101 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 159 transitions. Word has length 60 [2020-08-19 06:43:20,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:43:20,102 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 159 transitions. [2020-08-19 06:43:20,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:43:20,102 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 159 transitions. [2020-08-19 06:43:20,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-19 06:43:20,104 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:43:20,104 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] [2020-08-19 06:43:20,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:43:20,104 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:43:20,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:43:20,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1019781836, now seen corresponding path program 1 times [2020-08-19 06:43:20,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:43:20,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834435478] [2020-08-19 06:43:20,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:43:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:20,461 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:43:20,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:43:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:20,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:43:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:20,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:43:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:20,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:43:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:20,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:43:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:20,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:43:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:20,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:43:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:20,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:43:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:20,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 06:43:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:20,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 06:43:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:20,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 06:43:20,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834435478] [2020-08-19 06:43:20,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:43:20,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 06:43:20,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810180687] [2020-08-19 06:43:20,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 06:43:20,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:43:20,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 06:43:20,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:43:20,577 INFO L87 Difference]: Start difference. First operand 137 states and 159 transitions. Second operand 9 states. [2020-08-19 06:43:20,945 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:43:21,312 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:43:21,571 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:43:21,817 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:43:22,776 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:43:24,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:43:24,648 INFO L93 Difference]: Finished difference Result 460 states and 568 transitions. [2020-08-19 06:43:24,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 06:43:24,649 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-19 06:43:24,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:43:24,660 INFO L225 Difference]: With dead ends: 460 [2020-08-19 06:43:24,660 INFO L226 Difference]: Without dead ends: 351 [2020-08-19 06:43:24,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-19 06:43:24,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-08-19 06:43:24,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 290. [2020-08-19 06:43:24,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-08-19 06:43:24,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 350 transitions. [2020-08-19 06:43:24,767 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 350 transitions. Word has length 65 [2020-08-19 06:43:24,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:43:24,768 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 350 transitions. [2020-08-19 06:43:24,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 06:43:24,768 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 350 transitions. [2020-08-19 06:43:24,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 06:43:24,770 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:43:24,770 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] [2020-08-19 06:43:24,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:43:24,771 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:43:24,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:43:24,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1071873071, now seen corresponding path program 1 times [2020-08-19 06:43:24,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:43:24,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382950791] [2020-08-19 06:43:24,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:43:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:25,068 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:43:25,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:43:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:25,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:43:25,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:25,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:43:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:25,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:43:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:25,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:43:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:25,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:43:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:25,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 06:43:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:25,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 06:43:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:25,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:43:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:25,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 06:43:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:25,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 06:43:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:25,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 06:43:25,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382950791] [2020-08-19 06:43:25,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:43:25,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 06:43:25,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991506137] [2020-08-19 06:43:25,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 06:43:25,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:43:25,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 06:43:25,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:43:25,173 INFO L87 Difference]: Start difference. First operand 290 states and 350 transitions. Second operand 9 states. [2020-08-19 06:43:25,531 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:43:26,261 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:43:27,040 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:43:27,375 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:43:27,633 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:43:27,894 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:43:28,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:43:28,718 INFO L93 Difference]: Finished difference Result 747 states and 974 transitions. [2020-08-19 06:43:28,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 06:43:28,718 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-19 06:43:28,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:43:28,724 INFO L225 Difference]: With dead ends: 747 [2020-08-19 06:43:28,724 INFO L226 Difference]: Without dead ends: 485 [2020-08-19 06:43:28,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 06:43:28,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-08-19 06:43:28,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 417. [2020-08-19 06:43:28,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-08-19 06:43:28,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 501 transitions. [2020-08-19 06:43:28,819 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 501 transitions. Word has length 70 [2020-08-19 06:43:28,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:43:28,819 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 501 transitions. [2020-08-19 06:43:28,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 06:43:28,820 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 501 transitions. [2020-08-19 06:43:28,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 06:43:28,822 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:43:28,822 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] [2020-08-19 06:43:28,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:43:28,823 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:43:28,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:43:28,823 INFO L82 PathProgramCache]: Analyzing trace with hash -573764694, now seen corresponding path program 1 times [2020-08-19 06:43:28,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:43:28,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450116251] [2020-08-19 06:43:28,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:43:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:29,104 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:43:29,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:43:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:29,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:43:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:29,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:43:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:29,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:43:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:29,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:43:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:29,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:43:29,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:29,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:43:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:29,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:43:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:29,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 06:43:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:29,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:43:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:29,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:43:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:29,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:43:29,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:29,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:43:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:29,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 06:43:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:29,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 06:43:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:29,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 06:43:29,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450116251] [2020-08-19 06:43:29,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:43:29,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 06:43:29,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487844745] [2020-08-19 06:43:29,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 06:43:29,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:43:29,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 06:43:29,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:43:29,253 INFO L87 Difference]: Start difference. First operand 417 states and 501 transitions. Second operand 9 states. [2020-08-19 06:43:29,633 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:43:30,763 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:43:31,022 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 06:43:31,290 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:43:31,570 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:43:32,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:43:32,815 INFO L93 Difference]: Finished difference Result 1260 states and 1685 transitions. [2020-08-19 06:43:32,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 06:43:32,816 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-19 06:43:32,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:43:32,822 INFO L225 Difference]: With dead ends: 1260 [2020-08-19 06:43:32,823 INFO L226 Difference]: Without dead ends: 871 [2020-08-19 06:43:32,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-19 06:43:32,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2020-08-19 06:43:32,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 743. [2020-08-19 06:43:32,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-19 06:43:33,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 897 transitions. [2020-08-19 06:43:33,002 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 897 transitions. Word has length 93 [2020-08-19 06:43:33,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:43:33,003 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 897 transitions. [2020-08-19 06:43:33,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 06:43:33,003 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 897 transitions. [2020-08-19 06:43:33,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 06:43:33,006 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:43:33,006 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] [2020-08-19 06:43:33,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 06:43:33,006 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:43:33,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:43:33,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1995721705, now seen corresponding path program 1 times [2020-08-19 06:43:33,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:43:33,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693657003] [2020-08-19 06:43:33,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:43:33,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:33,246 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:43:33,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:43:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:33,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:43:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:33,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:43:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:33,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:43:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:33,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:43:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:33,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:43:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:33,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:43:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:33,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:43:33,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:33,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 06:43:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:33,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:43:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:33,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:43:33,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:33,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:43:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:33,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:43:33,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:33,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 06:43:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:33,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 06:43:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:33,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 06:43:33,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693657003] [2020-08-19 06:43:33,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:43:33,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 06:43:33,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24883422] [2020-08-19 06:43:33,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 06:43:33,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:43:33,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 06:43:33,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:43:33,428 INFO L87 Difference]: Start difference. First operand 743 states and 897 transitions. Second operand 9 states. [2020-08-19 06:43:34,528 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:43:34,790 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 06:43:35,056 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:43:35,332 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:43:36,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:43:36,142 INFO L93 Difference]: Finished difference Result 1585 states and 2019 transitions. [2020-08-19 06:43:36,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 06:43:36,142 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-19 06:43:36,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:43:36,150 INFO L225 Difference]: With dead ends: 1585 [2020-08-19 06:43:36,151 INFO L226 Difference]: Without dead ends: 870 [2020-08-19 06:43:36,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 06:43:36,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2020-08-19 06:43:36,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 763. [2020-08-19 06:43:36,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 763 states. [2020-08-19 06:43:36,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 917 transitions. [2020-08-19 06:43:36,300 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 917 transitions. Word has length 93 [2020-08-19 06:43:36,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:43:36,303 INFO L479 AbstractCegarLoop]: Abstraction has 763 states and 917 transitions. [2020-08-19 06:43:36,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 06:43:36,303 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 917 transitions. [2020-08-19 06:43:36,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 06:43:36,305 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:43:36,306 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] [2020-08-19 06:43:36,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 06:43:36,306 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:43:36,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:43:36,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1597645717, now seen corresponding path program 1 times [2020-08-19 06:43:36,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:43:36,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596420350] [2020-08-19 06:43:36,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:43:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:36,596 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:43:36,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:43:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:36,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:43:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:36,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:43:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:36,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:43:36,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:36,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:43:36,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:36,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:43:36,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:36,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:43:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:36,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:43:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:36,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 06:43:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:36,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:43:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:36,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:43:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:36,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:43:36,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:36,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:43:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:36,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 06:43:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:36,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 06:43:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:36,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 06:43:36,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596420350] [2020-08-19 06:43:36,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:43:36,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 06:43:36,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074026411] [2020-08-19 06:43:36,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 06:43:36,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:43:36,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 06:43:36,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 06:43:36,765 INFO L87 Difference]: Start difference. First operand 763 states and 917 transitions. Second operand 11 states. [2020-08-19 06:43:37,277 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:43:37,517 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:43:37,741 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:43:38,588 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:43:38,861 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:43:39,125 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:43:40,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:43:40,026 INFO L93 Difference]: Finished difference Result 1442 states and 1826 transitions. [2020-08-19 06:43:40,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 06:43:40,027 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-19 06:43:40,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:43:40,034 INFO L225 Difference]: With dead ends: 1442 [2020-08-19 06:43:40,034 INFO L226 Difference]: Without dead ends: 707 [2020-08-19 06:43:40,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 06:43:40,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-08-19 06:43:40,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 630. [2020-08-19 06:43:40,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2020-08-19 06:43:40,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 739 transitions. [2020-08-19 06:43:40,156 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 739 transitions. Word has length 93 [2020-08-19 06:43:40,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:43:40,157 INFO L479 AbstractCegarLoop]: Abstraction has 630 states and 739 transitions. [2020-08-19 06:43:40,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 06:43:40,157 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 739 transitions. [2020-08-19 06:43:40,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-19 06:43:40,159 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:43:40,159 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] [2020-08-19 06:43:40,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 06:43:40,160 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:43:40,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:43:40,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1394866514, now seen corresponding path program 1 times [2020-08-19 06:43:40,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:43:40,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121306371] [2020-08-19 06:43:40,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:43:40,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:40,483 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:43:40,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:43:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:40,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:43:40,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:40,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:43:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:40,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:43:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:40,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:43:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:40,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:43:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:40,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 06:43:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:40,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 06:43:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:40,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:43:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:40,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-19 06:43:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:40,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:43:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:40,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:43:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:40,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:43:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:40,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:43:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:40,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 06:43:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:40,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 06:43:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:40,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 06:43:40,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121306371] [2020-08-19 06:43:40,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:43:40,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 06:43:40,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978625470] [2020-08-19 06:43:40,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 06:43:40,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:43:40,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 06:43:40,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:43:40,643 INFO L87 Difference]: Start difference. First operand 630 states and 739 transitions. Second operand 12 states. [2020-08-19 06:43:41,069 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:43:41,695 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:43:42,364 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:43:42,692 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:43:42,941 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 06:43:43,255 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:43:43,513 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:43:45,381 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:43:45,675 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:43:46,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:43:46,103 INFO L93 Difference]: Finished difference Result 1853 states and 2361 transitions. [2020-08-19 06:43:46,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 06:43:46,105 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-08-19 06:43:46,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:43:46,114 INFO L225 Difference]: With dead ends: 1853 [2020-08-19 06:43:46,114 INFO L226 Difference]: Without dead ends: 1437 [2020-08-19 06:43:46,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-19 06:43:46,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2020-08-19 06:43:46,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1299. [2020-08-19 06:43:46,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1299 states. [2020-08-19 06:43:46,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1525 transitions. [2020-08-19 06:43:46,372 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1525 transitions. Word has length 97 [2020-08-19 06:43:46,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:43:46,375 INFO L479 AbstractCegarLoop]: Abstraction has 1299 states and 1525 transitions. [2020-08-19 06:43:46,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 06:43:46,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1525 transitions. [2020-08-19 06:43:46,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-19 06:43:46,381 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:43:46,381 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 06:43:46,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 06:43:46,382 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:43:46,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:43:46,382 INFO L82 PathProgramCache]: Analyzing trace with hash 773750625, now seen corresponding path program 1 times [2020-08-19 06:43:46,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:43:46,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386037017] [2020-08-19 06:43:46,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:43:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:46,694 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:43:46,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:43:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:46,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:43:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:46,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:43:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:46,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:43:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:46,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:43:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:46,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:43:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:46,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 06:43:46,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:46,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 06:43:46,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:46,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:43:46,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:46,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:43:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:46,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:43:46,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:46,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:43:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:46,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:43:46,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:46,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:43:46,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:46,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:43:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:46,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:43:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:46,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:43:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:46,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-19 06:43:46,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:46,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:43:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:46,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-19 06:43:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:46,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 06:43:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:46,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:43:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:46,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:43:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:46,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 06:43:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:46,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:43:46,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:46,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 06:43:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:46,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-19 06:43:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:47,055 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 06:43:47,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386037017] [2020-08-19 06:43:47,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:43:47,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 06:43:47,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27628802] [2020-08-19 06:43:47,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 06:43:47,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:43:47,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 06:43:47,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-19 06:43:47,058 INFO L87 Difference]: Start difference. First operand 1299 states and 1525 transitions. Second operand 16 states. [2020-08-19 06:43:47,556 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 06:43:47,893 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-19 06:43:48,154 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 06:43:48,408 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 06:43:49,101 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-08-19 06:43:49,504 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-19 06:43:49,852 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 06:43:50,256 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-19 06:43:50,618 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-19 06:43:51,802 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:43:52,753 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-19 06:43:53,275 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-19 06:43:53,590 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 06:43:54,179 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:43:54,608 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-19 06:43:55,213 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-08-19 06:43:55,806 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-08-19 06:43:56,340 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 06:43:56,892 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-19 06:43:57,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:43:57,680 INFO L93 Difference]: Finished difference Result 2875 states and 3500 transitions. [2020-08-19 06:43:57,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-08-19 06:43:57,681 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2020-08-19 06:43:57,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:43:57,692 INFO L225 Difference]: With dead ends: 2875 [2020-08-19 06:43:57,692 INFO L226 Difference]: Without dead ends: 1784 [2020-08-19 06:43:57,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=751, Invalid=3031, Unknown=0, NotChecked=0, Total=3782 [2020-08-19 06:43:57,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2020-08-19 06:43:58,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1573. [2020-08-19 06:43:58,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-08-19 06:43:58,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 1829 transitions. [2020-08-19 06:43:58,016 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 1829 transitions. Word has length 157 [2020-08-19 06:43:58,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:43:58,017 INFO L479 AbstractCegarLoop]: Abstraction has 1573 states and 1829 transitions. [2020-08-19 06:43:58,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 06:43:58,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 1829 transitions. [2020-08-19 06:43:58,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-08-19 06:43:58,024 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:43:58,024 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 06:43:58,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 06:43:58,025 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:43:58,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:43:58,025 INFO L82 PathProgramCache]: Analyzing trace with hash -2117575381, now seen corresponding path program 1 times [2020-08-19 06:43:58,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:43:58,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453511001] [2020-08-19 06:43:58,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:43:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,361 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:43:58,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:43:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:43:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:43:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:43:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:43:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:43:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 06:43:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 06:43:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:43:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:43:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:43:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:43:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:43:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:43:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:43:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:43:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:43:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-19 06:43:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:43:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:43:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:43:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 06:43:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:43:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:43:58,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 06:43:58,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:43:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:43:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:43:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-19 06:43:58,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:43:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:43:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:43:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 06:43:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:43:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:43:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 06:43:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 06:43:58,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:43:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-08-19 06:43:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:43:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-19 06:43:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:43:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:43:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:43:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:43:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-19 06:43:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-19 06:43:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:43:58,917 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 81 proven. 31 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-08-19 06:43:58,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453511001] [2020-08-19 06:43:58,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:43:58,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 06:43:58,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051013662] [2020-08-19 06:43:58,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 06:43:58,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:43:58,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 06:43:58,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-19 06:43:58,920 INFO L87 Difference]: Start difference. First operand 1573 states and 1829 transitions. Second operand 15 states. [2020-08-19 06:44:00,401 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:44:00,683 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 06:44:00,940 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:44:01,195 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 06:44:01,457 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:44:02,506 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 06:44:03,012 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-19 06:44:03,455 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-19 06:44:03,809 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:44:06,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:44:06,328 INFO L93 Difference]: Finished difference Result 4467 states and 5409 transitions. [2020-08-19 06:44:06,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 06:44:06,329 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 273 [2020-08-19 06:44:06,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:44:06,345 INFO L225 Difference]: With dead ends: 4467 [2020-08-19 06:44:06,345 INFO L226 Difference]: Without dead ends: 2691 [2020-08-19 06:44:06,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-19 06:44:06,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2020-08-19 06:44:06,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 2317. [2020-08-19 06:44:06,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2317 states. [2020-08-19 06:44:06,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 2705 transitions. [2020-08-19 06:44:06,858 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 2705 transitions. Word has length 273 [2020-08-19 06:44:06,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:44:06,859 INFO L479 AbstractCegarLoop]: Abstraction has 2317 states and 2705 transitions. [2020-08-19 06:44:06,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 06:44:06,860 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 2705 transitions. [2020-08-19 06:44:06,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-08-19 06:44:06,872 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:44:06,873 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 06:44:06,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 06:44:06,874 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:44:06,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:44:06,874 INFO L82 PathProgramCache]: Analyzing trace with hash 856417488, now seen corresponding path program 1 times [2020-08-19 06:44:06,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:44:06,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060253091] [2020-08-19 06:44:06,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:44:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,189 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:44:07,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:44:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:44:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:44:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:44:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:44:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:44:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 06:44:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 06:44:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:44:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:44:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:44:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:44:07,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:44:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:44:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:44:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:44:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:44:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-19 06:44:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:44:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:44:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:44:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 06:44:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:44:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:44:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 06:44:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:44:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:44:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:44:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 06:44:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-19 06:44:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:44:07,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:44:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:44:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 06:44:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:44:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:44:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 06:44:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 06:44:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:44:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-08-19 06:44:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:44:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-08-19 06:44:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:44:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:44:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:44:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:44:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-19 06:44:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-08-19 06:44:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:44:07,662 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 90 proven. 36 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-08-19 06:44:07,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060253091] [2020-08-19 06:44:07,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:44:07,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 06:44:07,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54477398] [2020-08-19 06:44:07,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 06:44:07,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:44:07,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 06:44:07,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-19 06:44:07,666 INFO L87 Difference]: Start difference. First operand 2317 states and 2705 transitions. Second operand 16 states. [2020-08-19 06:44:08,512 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:44:08,891 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 06:44:09,182 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 06:44:09,427 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 06:44:10,153 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:44:11,088 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189