/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:18:11,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:18:11,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:18:11,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:18:11,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:18:11,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:18:11,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:18:11,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:18:11,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:18:11,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:18:11,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:18:11,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:18:11,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:18:11,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:18:11,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:18:11,531 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:18:11,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:18:11,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:18:11,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:18:11,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:18:11,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:18:11,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:18:11,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:18:11,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:18:11,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:18:11,544 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:18:11,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:18:11,545 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:18:11,545 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:18:11,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:18:11,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:18:11,547 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:18:11,548 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:18:11,548 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:18:11,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:18:11,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:18:11,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:18:11,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:18:11,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:18:11,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:18:11,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:18:11,553 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 16:18:11,575 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:18:11,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:18:11,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:18:11,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:18:11,577 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:18:11,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:18:11,577 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:18:11,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:18:11,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:18:11,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:18:11,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:18:11,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:18:11,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:18:11,579 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:18:11,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:18:11,579 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:18:11,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:18:11,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:18:11,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:18:11,580 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:18:11,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:18:11,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:18:11,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:18:11,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:18:11,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:18:11,583 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:18:11,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:18:11,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:18:11,583 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:18:11,584 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:18:11,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:18:11,912 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:18:11,915 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:18:11,917 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:18:11,917 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:18:11,918 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product45.cil.c [2020-08-21 16:18:11,979 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb516c0ae/7cb83ef1fd0b42b9ad89d37e66db7d4c/FLAGc36dbb7fa [2020-08-21 16:18:12,511 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:18:12,512 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product45.cil.c [2020-08-21 16:18:12,525 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb516c0ae/7cb83ef1fd0b42b9ad89d37e66db7d4c/FLAGc36dbb7fa [2020-08-21 16:18:12,828 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb516c0ae/7cb83ef1fd0b42b9ad89d37e66db7d4c [2020-08-21 16:18:12,837 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:18:12,839 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:18:12,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:18:12,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:18:12,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:18:12,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:18:12" (1/1) ... [2020-08-21 16:18:12,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a1e51c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:18:12, skipping insertion in model container [2020-08-21 16:18:12,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:18:12" (1/1) ... [2020-08-21 16:18:12,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:18:12,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:18:13,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:18:13,263 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:18:13,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:18:13,530 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:18:13,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:18:13 WrapperNode [2020-08-21 16:18:13,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:18:13,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:18:13,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:18:13,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:18:13,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:18:13" (1/1) ... [2020-08-21 16:18:13,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:18:13" (1/1) ... [2020-08-21 16:18:13,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:18:13" (1/1) ... [2020-08-21 16:18:13,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:18:13" (1/1) ... [2020-08-21 16:18:13,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:18:13" (1/1) ... [2020-08-21 16:18:13,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:18:13" (1/1) ... [2020-08-21 16:18:13,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:18:13" (1/1) ... [2020-08-21 16:18:13,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:18:13,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:18:13,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:18:13,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:18:13,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:18:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:18:13,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:18:13,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:18:13,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 16:18:13,731 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 16:18:13,731 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 16:18:13,731 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 16:18:13,733 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 16:18:13,733 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 16:18:13,733 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 16:18:13,734 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 16:18:13,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 16:18:13,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 16:18:13,734 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 16:18:13,734 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 16:18:13,735 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 16:18:13,736 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 16:18:13,736 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:18:13,736 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 16:18:13,736 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 16:18:13,736 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 16:18:13,737 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 16:18:13,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 16:18:13,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 16:18:13,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 16:18:13,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 16:18:13,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 16:18:13,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 16:18:13,740 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 16:18:13,740 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 16:18:13,740 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 16:18:13,741 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 16:18:13,741 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 16:18:13,742 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 16:18:13,742 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 16:18:13,742 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 16:18:13,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 16:18:13,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 16:18:13,742 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 16:18:13,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 16:18:13,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:18:13,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 16:18:13,742 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 16:18:13,743 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 16:18:13,743 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 16:18:13,743 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 16:18:13,743 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 16:18:13,743 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 16:18:13,743 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 16:18:13,743 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 16:18:13,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 16:18:13,743 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 16:18:13,744 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 16:18:13,744 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 16:18:13,744 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 16:18:13,744 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 16:18:13,744 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 16:18:13,745 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 16:18:13,745 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 16:18:13,745 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 16:18:13,745 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 16:18:13,745 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 16:18:13,746 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 16:18:13,746 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 16:18:13,746 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:18:13,746 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 16:18:13,746 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 16:18:13,746 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 16:18:13,746 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 16:18:13,746 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 16:18:13,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 16:18:13,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 16:18:13,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 16:18:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 16:18:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 16:18:13,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 16:18:13,749 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 16:18:13,749 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 16:18:13,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 16:18:13,750 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 16:18:13,750 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 16:18:13,750 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 16:18:13,750 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 16:18:13,751 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 16:18:13,751 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 16:18:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 16:18:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 16:18:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 16:18:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 16:18:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 16:18:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:18:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 16:18:13,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:18:14,909 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:18:14,909 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 16:18:14,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:18:14 BoogieIcfgContainer [2020-08-21 16:18:14,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:18:14,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:18:14,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:18:14,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:18:14,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:18:12" (1/3) ... [2020-08-21 16:18:14,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62bae449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:18:14, skipping insertion in model container [2020-08-21 16:18:14,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:18:13" (2/3) ... [2020-08-21 16:18:14,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62bae449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:18:14, skipping insertion in model container [2020-08-21 16:18:14,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:18:14" (3/3) ... [2020-08-21 16:18:14,930 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product45.cil.c [2020-08-21 16:18:14,941 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:18:14,950 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:18:14,965 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:18:14,998 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:18:14,998 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:18:14,998 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:18:14,998 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:18:14,998 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:18:14,999 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:18:14,999 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:18:14,999 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:18:15,018 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states. [2020-08-21 16:18:15,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 16:18:15,028 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:18:15,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:18:15,030 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:18:15,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:18:15,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1763081390, now seen corresponding path program 1 times [2020-08-21 16:18:15,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:18:15,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329762059] [2020-08-21 16:18:15,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:18:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:15,664 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:18:15,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:18:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:15,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:18:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:15,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:18:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:15,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:18:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:15,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:18:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:15,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:18:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:15,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:18:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:15,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:18:15,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329762059] [2020-08-21 16:18:15,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:18:15,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 16:18:15,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846602048] [2020-08-21 16:18:15,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 16:18:15,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:18:15,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 16:18:15,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 16:18:15,846 INFO L87 Difference]: Start difference. First operand 173 states. Second operand 3 states. [2020-08-21 16:18:17,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:18:17,024 INFO L93 Difference]: Finished difference Result 303 states and 398 transitions. [2020-08-21 16:18:17,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 16:18:17,027 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 16:18:17,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:18:17,050 INFO L225 Difference]: With dead ends: 303 [2020-08-21 16:18:17,050 INFO L226 Difference]: Without dead ends: 164 [2020-08-21 16:18:17,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 16:18:17,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-21 16:18:17,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 130. [2020-08-21 16:18:17,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-21 16:18:17,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 154 transitions. [2020-08-21 16:18:17,157 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 154 transitions. Word has length 46 [2020-08-21 16:18:17,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:18:17,157 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 154 transitions. [2020-08-21 16:18:17,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 16:18:17,159 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 154 transitions. [2020-08-21 16:18:17,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 16:18:17,164 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:18:17,164 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:18:17,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:18:17,165 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:18:17,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:18:17,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1948835968, now seen corresponding path program 1 times [2020-08-21 16:18:17,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:18:17,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740397700] [2020-08-21 16:18:17,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:18:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:17,548 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:18:17,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:18:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:17,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:18:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:17,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:18:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:17,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:18:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:17,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:18:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:17,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 16:18:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:17,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 16:18:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:17,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:18:17,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740397700] [2020-08-21 16:18:17,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:18:17,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 16:18:17,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640884472] [2020-08-21 16:18:17,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 16:18:17,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:18:17,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 16:18:17,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 16:18:17,637 INFO L87 Difference]: Start difference. First operand 130 states and 154 transitions. Second operand 4 states. [2020-08-21 16:18:18,040 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:18:18,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:18:18,884 INFO L93 Difference]: Finished difference Result 236 states and 289 transitions. [2020-08-21 16:18:18,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:18:18,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 16:18:18,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:18:18,888 INFO L225 Difference]: With dead ends: 236 [2020-08-21 16:18:18,888 INFO L226 Difference]: Without dead ends: 148 [2020-08-21 16:18:18,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:18:18,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-08-21 16:18:18,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 121. [2020-08-21 16:18:18,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-08-21 16:18:18,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 142 transitions. [2020-08-21 16:18:18,927 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 142 transitions. Word has length 47 [2020-08-21 16:18:18,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:18:18,928 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 142 transitions. [2020-08-21 16:18:18,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 16:18:18,928 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 142 transitions. [2020-08-21 16:18:18,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 16:18:18,930 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:18:18,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:18:18,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:18:18,931 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:18:18,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:18:18,931 INFO L82 PathProgramCache]: Analyzing trace with hash -970175768, now seen corresponding path program 1 times [2020-08-21 16:18:18,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:18:18,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650891091] [2020-08-21 16:18:18,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:18:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:19,254 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:18:19,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:18:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:19,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:18:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:19,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:18:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:19,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:18:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:19,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:18:19,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:19,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:18:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:19,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 16:18:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:19,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:18:19,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650891091] [2020-08-21 16:18:19,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:18:19,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 16:18:19,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351441394] [2020-08-21 16:18:19,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 16:18:19,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:18:19,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 16:18:19,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 16:18:19,329 INFO L87 Difference]: Start difference. First operand 121 states and 142 transitions. Second operand 8 states. [2020-08-21 16:18:19,679 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:18:19,996 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:20,261 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:20,524 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:21,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:18:21,688 INFO L93 Difference]: Finished difference Result 245 states and 303 transitions. [2020-08-21 16:18:21,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 16:18:21,689 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 16:18:21,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:18:21,691 INFO L225 Difference]: With dead ends: 245 [2020-08-21 16:18:21,691 INFO L226 Difference]: Without dead ends: 148 [2020-08-21 16:18:21,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:18:21,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-08-21 16:18:21,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 121. [2020-08-21 16:18:21,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-08-21 16:18:21,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 141 transitions. [2020-08-21 16:18:21,726 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 141 transitions. Word has length 51 [2020-08-21 16:18:21,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:18:21,727 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 141 transitions. [2020-08-21 16:18:21,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 16:18:21,727 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 141 transitions. [2020-08-21 16:18:21,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 16:18:21,729 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:18:21,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:18:21,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 16:18:21,730 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:18:21,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:18:21,730 INFO L82 PathProgramCache]: Analyzing trace with hash 137025886, now seen corresponding path program 1 times [2020-08-21 16:18:21,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:18:21,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663126760] [2020-08-21 16:18:21,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:18:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:21,982 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:18:21,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:18:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:22,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:18:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:22,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:18:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:22,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:18:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:22,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:18:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:22,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 16:18:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:22,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:22,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:22,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:22,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 16:18:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:22,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 16:18:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:22,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:18:22,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663126760] [2020-08-21 16:18:22,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:18:22,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 16:18:22,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268193529] [2020-08-21 16:18:22,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 16:18:22,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:18:22,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 16:18:22,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:18:22,093 INFO L87 Difference]: Start difference. First operand 121 states and 141 transitions. Second operand 6 states. [2020-08-21 16:18:22,391 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:18:23,532 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:18:24,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:18:24,282 INFO L93 Difference]: Finished difference Result 342 states and 424 transitions. [2020-08-21 16:18:24,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 16:18:24,283 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-21 16:18:24,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:18:24,287 INFO L225 Difference]: With dead ends: 342 [2020-08-21 16:18:24,287 INFO L226 Difference]: Without dead ends: 245 [2020-08-21 16:18:24,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 16:18:24,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-08-21 16:18:24,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 204. [2020-08-21 16:18:24,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-08-21 16:18:24,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 233 transitions. [2020-08-21 16:18:24,357 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 233 transitions. Word has length 64 [2020-08-21 16:18:24,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:18:24,358 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 233 transitions. [2020-08-21 16:18:24,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 16:18:24,358 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 233 transitions. [2020-08-21 16:18:24,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-21 16:18:24,367 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:18:24,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:18:24,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 16:18:24,368 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:18:24,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:18:24,368 INFO L82 PathProgramCache]: Analyzing trace with hash -274572639, now seen corresponding path program 1 times [2020-08-21 16:18:24,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:18:24,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211316713] [2020-08-21 16:18:24,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:18:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:24,686 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:18:24,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:18:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:24,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:18:24,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:24,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:18:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:24,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:18:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:24,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:18:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:24,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 16:18:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:24,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:24,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:24,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:18:24,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:24,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:18:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:24,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 16:18:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:24,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 16:18:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:24,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:18:24,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211316713] [2020-08-21 16:18:24,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:18:24,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 16:18:24,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031806909] [2020-08-21 16:18:24,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 16:18:24,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:18:24,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 16:18:24,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 16:18:24,798 INFO L87 Difference]: Start difference. First operand 204 states and 233 transitions. Second operand 8 states. [2020-08-21 16:18:25,171 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:18:26,179 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:26,523 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:18:27,096 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:27,334 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:27,601 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:18:28,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:18:28,497 INFO L93 Difference]: Finished difference Result 607 states and 749 transitions. [2020-08-21 16:18:28,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 16:18:28,498 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-08-21 16:18:28,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:18:28,503 INFO L225 Difference]: With dead ends: 607 [2020-08-21 16:18:28,504 INFO L226 Difference]: Without dead ends: 427 [2020-08-21 16:18:28,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-21 16:18:28,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-08-21 16:18:28,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 363. [2020-08-21 16:18:28,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-08-21 16:18:28,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 416 transitions. [2020-08-21 16:18:28,611 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 416 transitions. Word has length 78 [2020-08-21 16:18:28,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:18:28,612 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 416 transitions. [2020-08-21 16:18:28,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 16:18:28,612 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 416 transitions. [2020-08-21 16:18:28,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-21 16:18:28,614 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:18:28,614 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:18:28,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 16:18:28,615 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:18:28,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:18:28,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1223934493, now seen corresponding path program 1 times [2020-08-21 16:18:28,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:18:28,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993284522] [2020-08-21 16:18:28,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:18:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:28,975 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:18:28,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:18:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:29,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:18:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:29,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:18:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:29,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:18:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:29,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:18:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:29,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:18:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:29,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 16:18:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:29,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:29,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:29,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:18:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:29,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:18:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:29,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 16:18:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:29,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 16:18:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:29,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:18:29,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993284522] [2020-08-21 16:18:29,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:18:29,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 16:18:29,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621787964] [2020-08-21 16:18:29,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 16:18:29,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:18:29,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 16:18:29,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:18:29,114 INFO L87 Difference]: Start difference. First operand 363 states and 416 transitions. Second operand 9 states. [2020-08-21 16:18:29,550 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:18:30,700 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:18:30,980 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:18:31,914 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:32,179 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:32,452 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:32,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:18:32,734 INFO L93 Difference]: Finished difference Result 466 states and 584 transitions. [2020-08-21 16:18:32,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 16:18:32,735 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-08-21 16:18:32,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:18:32,740 INFO L225 Difference]: With dead ends: 466 [2020-08-21 16:18:32,740 INFO L226 Difference]: Without dead ends: 463 [2020-08-21 16:18:32,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 16:18:32,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2020-08-21 16:18:32,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 363. [2020-08-21 16:18:32,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-08-21 16:18:32,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 415 transitions. [2020-08-21 16:18:32,811 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 415 transitions. Word has length 82 [2020-08-21 16:18:32,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:18:32,812 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 415 transitions. [2020-08-21 16:18:32,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 16:18:32,812 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 415 transitions. [2020-08-21 16:18:32,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 16:18:32,814 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:18:32,814 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:18:32,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 16:18:32,814 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:18:32,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:18:32,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1913348729, now seen corresponding path program 1 times [2020-08-21 16:18:32,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:18:32,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800618448] [2020-08-21 16:18:32,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:18:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:33,060 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:18:33,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:18:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:33,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:18:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:33,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:18:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:33,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:18:33,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:33,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:18:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:33,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:18:33,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:33,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 16:18:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:33,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:33,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:33,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:18:33,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:33,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:18:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:33,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:18:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:33,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:18:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:33,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:18:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:33,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 16:18:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:33,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 16:18:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:33,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 16:18:33,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800618448] [2020-08-21 16:18:33,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:18:33,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 16:18:33,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864415230] [2020-08-21 16:18:33,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 16:18:33,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:18:33,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 16:18:33,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:18:33,258 INFO L87 Difference]: Start difference. First operand 363 states and 415 transitions. Second operand 9 states. [2020-08-21 16:18:34,129 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:34,413 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:18:34,664 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:18:34,910 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:18:35,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:18:35,909 INFO L93 Difference]: Finished difference Result 810 states and 1008 transitions. [2020-08-21 16:18:35,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 16:18:35,910 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-08-21 16:18:35,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:18:35,913 INFO L225 Difference]: With dead ends: 810 [2020-08-21 16:18:35,914 INFO L226 Difference]: Without dead ends: 471 [2020-08-21 16:18:35,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 16:18:35,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-08-21 16:18:35,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 373. [2020-08-21 16:18:35,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-08-21 16:18:35,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 425 transitions. [2020-08-21 16:18:35,989 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 425 transitions. Word has length 98 [2020-08-21 16:18:35,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:18:35,989 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 425 transitions. [2020-08-21 16:18:35,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 16:18:35,990 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 425 transitions. [2020-08-21 16:18:35,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 16:18:35,992 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:18:35,992 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:18:35,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 16:18:35,992 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:18:35,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:18:35,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1019862391, now seen corresponding path program 1 times [2020-08-21 16:18:35,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:18:35,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532507378] [2020-08-21 16:18:35,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:18:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:36,281 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:18:36,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:18:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:36,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:18:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:36,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:18:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:36,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:18:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:36,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:18:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:36,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:18:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:36,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 16:18:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:36,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:36,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:36,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:18:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:36,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:18:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:36,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:18:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:36,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:18:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:36,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:18:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:36,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 16:18:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:36,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 16:18:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:36,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 16:18:36,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532507378] [2020-08-21 16:18:36,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:18:36,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 16:18:36,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919973207] [2020-08-21 16:18:36,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 16:18:36,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:18:36,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 16:18:36,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 16:18:36,444 INFO L87 Difference]: Start difference. First operand 373 states and 425 transitions. Second operand 11 states. [2020-08-21 16:18:36,900 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:18:37,140 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:18:37,372 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:18:37,959 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:18:38,224 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:18:38,454 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:18:39,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:18:39,571 INFO L93 Difference]: Finished difference Result 830 states and 1030 transitions. [2020-08-21 16:18:39,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 16:18:39,572 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-08-21 16:18:39,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:18:39,576 INFO L225 Difference]: With dead ends: 830 [2020-08-21 16:18:39,577 INFO L226 Difference]: Without dead ends: 481 [2020-08-21 16:18:39,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 16:18:39,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-08-21 16:18:39,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 381. [2020-08-21 16:18:39,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-08-21 16:18:39,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 433 transitions. [2020-08-21 16:18:39,658 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 433 transitions. Word has length 98 [2020-08-21 16:18:39,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:18:39,658 INFO L479 AbstractCegarLoop]: Abstraction has 381 states and 433 transitions. [2020-08-21 16:18:39,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 16:18:39,659 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 433 transitions. [2020-08-21 16:18:39,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 16:18:39,660 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:18:39,660 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:18:39,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 16:18:39,661 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:18:39,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:18:39,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1027621750, now seen corresponding path program 1 times [2020-08-21 16:18:39,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:18:39,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733991545] [2020-08-21 16:18:39,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:18:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:39,945 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:18:39,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:18:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:39,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:18:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:39,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:18:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:39,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:18:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:39,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:18:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:39,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:18:39,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:40,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 16:18:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:40,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:40,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:40,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:40,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:40,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:18:40,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:40,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:18:40,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:40,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:18:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:40,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:18:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:40,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:18:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:40,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 16:18:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:40,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 16:18:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:40,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 16:18:40,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733991545] [2020-08-21 16:18:40,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:18:40,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 16:18:40,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65705610] [2020-08-21 16:18:40,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 16:18:40,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:18:40,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 16:18:40,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 16:18:40,108 INFO L87 Difference]: Start difference. First operand 381 states and 433 transitions. Second operand 7 states. [2020-08-21 16:18:40,632 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:18:41,125 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:18:43,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:18:43,066 INFO L93 Difference]: Finished difference Result 1133 states and 1452 transitions. [2020-08-21 16:18:43,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 16:18:43,066 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-08-21 16:18:43,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:18:43,072 INFO L225 Difference]: With dead ends: 1133 [2020-08-21 16:18:43,073 INFO L226 Difference]: Without dead ends: 776 [2020-08-21 16:18:43,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 16:18:43,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2020-08-21 16:18:43,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 677. [2020-08-21 16:18:43,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 677 states. [2020-08-21 16:18:43,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 803 transitions. [2020-08-21 16:18:43,195 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 803 transitions. Word has length 98 [2020-08-21 16:18:43,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:18:43,196 INFO L479 AbstractCegarLoop]: Abstraction has 677 states and 803 transitions. [2020-08-21 16:18:43,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 16:18:43,196 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 803 transitions. [2020-08-21 16:18:43,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-21 16:18:43,198 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:18:43,198 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:18:43,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 16:18:43,198 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:18:43,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:18:43,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1865521988, now seen corresponding path program 1 times [2020-08-21 16:18:43,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:18:43,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928352985] [2020-08-21 16:18:43,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:18:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:43,471 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:18:43,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:18:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:43,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:18:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:43,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:18:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:43,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:18:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:43,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:18:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:43,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 16:18:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:43,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 16:18:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:43,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 16:18:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:43,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:43,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:43,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:18:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:43,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:18:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:43,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:18:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:43,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:18:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:43,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:18:43,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:43,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 16:18:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:43,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 16:18:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:43,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 16:18:43,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928352985] [2020-08-21 16:18:43,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:18:43,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 16:18:43,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991958057] [2020-08-21 16:18:43,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 16:18:43,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:18:43,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 16:18:43,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-21 16:18:43,733 INFO L87 Difference]: Start difference. First operand 677 states and 803 transitions. Second operand 17 states. [2020-08-21 16:18:44,434 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:18:44,881 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:18:45,259 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:18:45,484 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:18:46,016 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:18:46,882 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:47,183 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:47,433 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:47,716 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:48,023 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:48,286 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:48,820 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-21 16:18:49,333 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-21 16:18:51,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:18:51,157 INFO L93 Difference]: Finished difference Result 1398 states and 1726 transitions. [2020-08-21 16:18:51,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 16:18:51,158 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 102 [2020-08-21 16:18:51,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:18:51,163 INFO L225 Difference]: With dead ends: 1398 [2020-08-21 16:18:51,163 INFO L226 Difference]: Without dead ends: 745 [2020-08-21 16:18:51,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=304, Invalid=1256, Unknown=0, NotChecked=0, Total=1560 [2020-08-21 16:18:51,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2020-08-21 16:18:51,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 649. [2020-08-21 16:18:51,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-21 16:18:51,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 757 transitions. [2020-08-21 16:18:51,295 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 757 transitions. Word has length 102 [2020-08-21 16:18:51,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:18:51,295 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 757 transitions. [2020-08-21 16:18:51,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 16:18:51,296 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 757 transitions. [2020-08-21 16:18:51,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-21 16:18:51,303 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:18:51,303 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:18:51,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 16:18:51,304 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:18:51,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:18:51,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1153565628, now seen corresponding path program 1 times [2020-08-21 16:18:51,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:18:51,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437432939] [2020-08-21 16:18:51,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:18:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,612 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:18:51,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:18:51,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:18:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:18:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:18:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:18:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 16:18:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 16:18:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:51,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:51,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:51,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:18:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:18:51,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:18:51,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:18:51,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:18:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 16:18:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:18:51,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 16:18:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-21 16:18:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-21 16:18:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:18:51,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:18:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-21 16:18:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-21 16:18:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,969 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-21 16:18:51,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437432939] [2020-08-21 16:18:51,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:18:51,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-21 16:18:51,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798812231] [2020-08-21 16:18:51,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-21 16:18:51,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:18:51,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-21 16:18:51,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-21 16:18:51,973 INFO L87 Difference]: Start difference. First operand 649 states and 757 transitions. Second operand 18 states. [2020-08-21 16:18:52,674 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:18:53,003 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:18:53,247 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:18:53,479 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:18:54,066 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:18:55,005 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:55,349 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:55,618 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:55,898 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:56,199 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:56,448 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:57,623 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:57,888 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:58,156 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:58,405 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:59,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:18:59,304 INFO L93 Difference]: Finished difference Result 1181 states and 1457 transitions. [2020-08-21 16:18:59,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-21 16:18:59,305 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 153 [2020-08-21 16:18:59,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:18:59,306 INFO L225 Difference]: With dead ends: 1181 [2020-08-21 16:18:59,306 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 16:18:59,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=338, Invalid=1554, Unknown=0, NotChecked=0, Total=1892 [2020-08-21 16:18:59,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 16:18:59,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 16:18:59,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 16:18:59,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 16:18:59,312 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 153 [2020-08-21 16:18:59,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:18:59,312 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 16:18:59,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-21 16:18:59,312 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 16:18:59,312 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 16:18:59,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 16:18:59,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 16:19:02,005 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 294 DAG size of output: 242 [2020-08-21 16:19:03,776 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 242 [2020-08-21 16:19:04,513 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 244 [2020-08-21 16:19:05,148 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 242 [2020-08-21 16:19:05,984 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 18 [2020-08-21 16:19:06,676 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 16 [2020-08-21 16:19:06,846 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 1 [2020-08-21 16:19:07,021 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-21 16:19:07,244 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 22 [2020-08-21 16:19:07,417 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 1 [2020-08-21 16:19:07,621 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 1 [2020-08-21 16:19:07,801 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 24 [2020-08-21 16:19:07,978 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 24 [2020-08-21 16:19:08,177 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:19:08,346 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 1 [2020-08-21 16:19:08,855 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 20 [2020-08-21 16:19:09,029 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 1 [2020-08-21 16:19:09,505 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 19 [2020-08-21 16:19:09,673 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 1 [2020-08-21 16:19:10,189 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 20 [2020-08-21 16:19:10,698 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 22 [2020-08-21 16:19:11,196 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 25 [2020-08-21 16:19:11,692 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 19 [2020-08-21 16:19:11,919 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 9 [2020-08-21 16:19:12,116 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 22