/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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_spec5_product58.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 01:20:37,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:20:37,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:20:37,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:20:37,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:20:37,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:20:37,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:20:37,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:20:37,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:20:37,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:20:37,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:20:37,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:20:37,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:20:37,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:20:37,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:20:37,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:20:37,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:20:37,437 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:20:37,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:20:37,447 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:20:37,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:20:37,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:20:37,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:20:37,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:20:37,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:20:37,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:20:37,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:20:37,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:20:37,460 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:20:37,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 01:20:37,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 01:20:37,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 01:20:37,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 01:20:37,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 01:20:37,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 01:20:37,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 01:20:37,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 01:20:37,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 01:20:37,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:20:37,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:20:37,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:20:37,471 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 [2020-08-22 01:20:37,512 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:20:37,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:20:37,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:20:37,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:20:37,514 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:20:37,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:20:37,515 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:20:37,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:20:37,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:20:37,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:20:37,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:20:37,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:20:37,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:20:37,518 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:20:37,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:20:37,518 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:20:37,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:20:37,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:20:37,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:20:37,519 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:20:37,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:20:37,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:20:37,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:20:37,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:20:37,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:20:37,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:20:37,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:20:37,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:20:37,520 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:20:37,521 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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-08-22 01:20:37,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:20:37,858 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:20:37,862 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:20:37,864 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:20:37,864 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:20:37,865 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product58.cil.c [2020-08-22 01:20:37,928 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b59a4ed0a/4bafd441262542df9ba639b481bb3300/FLAG93e6f53b5 [2020-08-22 01:20:38,475 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:20:38,479 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product58.cil.c [2020-08-22 01:20:38,504 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b59a4ed0a/4bafd441262542df9ba639b481bb3300/FLAG93e6f53b5 [2020-08-22 01:20:38,807 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b59a4ed0a/4bafd441262542df9ba639b481bb3300 [2020-08-22 01:20:38,818 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:20:38,820 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:20:38,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:20:38,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:20:38,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:20:38,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:20:38" (1/1) ... [2020-08-22 01:20:38,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20abf48c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:38, skipping insertion in model container [2020-08-22 01:20:38,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:20:38" (1/1) ... [2020-08-22 01:20:38,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:20:38,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:20:39,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:20:39,405 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:20:39,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:20:39,558 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:20:39,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:39 WrapperNode [2020-08-22 01:20:39,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:20:39,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:20:39,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:20:39,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:20:39,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:39" (1/1) ... [2020-08-22 01:20:39,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:39" (1/1) ... [2020-08-22 01:20:39,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:39" (1/1) ... [2020-08-22 01:20:39,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:39" (1/1) ... [2020-08-22 01:20:39,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:39" (1/1) ... [2020-08-22 01:20:39,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:39" (1/1) ... [2020-08-22 01:20:39,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:39" (1/1) ... [2020-08-22 01:20:39,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:20:39,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:20:39,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:20:39,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:20:39,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:39" (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 [2020-08-22 01:20:39,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:20:39,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:20:39,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 01:20:39,779 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 01:20:39,779 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 01:20:39,780 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 01:20:39,780 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 01:20:39,780 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 01:20:39,780 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 01:20:39,781 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 01:20:39,781 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 01:20:39,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-22 01:20:39,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-22 01:20:39,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-22 01:20:39,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 01:20:39,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 01:20:39,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 01:20:39,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 01:20:39,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 01:20:39,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 01:20:39,784 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 01:20:39,784 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 01:20:39,784 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 01:20:39,784 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 01:20:39,785 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:20:39,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 01:20:39,786 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 01:20:39,786 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 01:20:39,786 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 01:20:39,786 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 01:20:39,786 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 01:20:39,787 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 01:20:39,787 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 01:20:39,787 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 01:20:39,787 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 01:20:39,787 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 01:20:39,787 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 01:20:39,787 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 01:20:39,788 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 01:20:39,788 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 01:20:39,788 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 01:20:39,788 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 01:20:39,788 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 01:20:39,788 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 01:20:39,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:20:39,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 01:20:39,789 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 01:20:39,789 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 01:20:39,789 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 01:20:39,789 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 01:20:39,789 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 01:20:39,790 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 01:20:39,790 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 01:20:39,790 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 01:20:39,790 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 01:20:39,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 01:20:39,791 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 01:20:39,791 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 01:20:39,791 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-22 01:20:39,791 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-22 01:20:39,791 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-22 01:20:39,792 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 01:20:39,792 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 01:20:39,792 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 01:20:39,792 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 01:20:39,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 01:20:39,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 01:20:39,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 01:20:39,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 01:20:39,793 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 01:20:39,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 01:20:39,794 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 01:20:39,795 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 01:20:39,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 01:20:39,796 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 01:20:39,796 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 01:20:39,796 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 01:20:39,796 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 01:20:39,797 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 01:20:39,797 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 01:20:39,797 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 01:20:39,797 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 01:20:39,798 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 01:20:39,799 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 01:20:39,799 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 01:20:39,799 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 01:20:39,799 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 01:20:39,799 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:20:39,799 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 01:20:39,800 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 01:20:39,800 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 01:20:39,800 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 01:20:39,800 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 01:20:39,800 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 01:20:39,800 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 01:20:39,801 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 01:20:39,801 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 01:20:39,801 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 01:20:39,801 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 01:20:39,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:20:39,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 01:20:39,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:20:40,921 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:20:40,921 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 01:20:40,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:20:40 BoogieIcfgContainer [2020-08-22 01:20:40,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:20:40,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:20:40,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:20:40,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:20:40,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:20:38" (1/3) ... [2020-08-22 01:20:40,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743efade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:20:40, skipping insertion in model container [2020-08-22 01:20:40,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:39" (2/3) ... [2020-08-22 01:20:40,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743efade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:20:40, skipping insertion in model container [2020-08-22 01:20:40,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:20:40" (3/3) ... [2020-08-22 01:20:40,937 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product58.cil.c [2020-08-22 01:20:40,948 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:20:40,957 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:20:40,972 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:20:41,001 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:20:41,001 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:20:41,002 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:20:41,002 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:20:41,002 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:20:41,002 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:20:41,002 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:20:41,002 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:20:41,029 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states. [2020-08-22 01:20:41,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 01:20:41,040 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:20:41,041 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:20:41,042 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:20:41,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:20:41,049 INFO L82 PathProgramCache]: Analyzing trace with hash -229262266, now seen corresponding path program 1 times [2020-08-22 01:20:41,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:20:41,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907164572] [2020-08-22 01:20:41,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:20:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:41,793 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:20:41,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:41,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:41,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:20:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:41,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:20:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:41,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:20:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:41,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:20:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:41,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:20:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:41,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:20:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:41,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:41,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 01:20:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:41,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 01:20:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:41,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:20:41,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907164572] [2020-08-22 01:20:41,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:20:41,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 01:20:41,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619962484] [2020-08-22 01:20:41,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 01:20:41,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:20:41,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 01:20:41,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 01:20:41,979 INFO L87 Difference]: Start difference. First operand 200 states. Second operand 4 states. [2020-08-22 01:20:43,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:20:43,178 INFO L93 Difference]: Finished difference Result 345 states and 435 transitions. [2020-08-22 01:20:43,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 01:20:43,180 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-22 01:20:43,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:20:43,196 INFO L225 Difference]: With dead ends: 345 [2020-08-22 01:20:43,197 INFO L226 Difference]: Without dead ends: 189 [2020-08-22 01:20:43,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 01:20:43,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-22 01:20:43,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 157. [2020-08-22 01:20:43,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-08-22 01:20:43,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 182 transitions. [2020-08-22 01:20:43,315 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 182 transitions. Word has length 59 [2020-08-22 01:20:43,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:20:43,316 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 182 transitions. [2020-08-22 01:20:43,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 01:20:43,317 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 182 transitions. [2020-08-22 01:20:43,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 01:20:43,330 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:20:43,330 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:20:43,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:20:43,331 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:20:43,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:20:43,332 INFO L82 PathProgramCache]: Analyzing trace with hash -751857026, now seen corresponding path program 1 times [2020-08-22 01:20:43,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:20:43,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599664959] [2020-08-22 01:20:43,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:20:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:43,720 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:20:43,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:43,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:43,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:20:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:43,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:20:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:43,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:20:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:43,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:20:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:43,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:20:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:43,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 01:20:43,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:43,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:43,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:43,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 01:20:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:43,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 01:20:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:43,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:20:43,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599664959] [2020-08-22 01:20:43,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:20:43,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:20:43,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795658124] [2020-08-22 01:20:43,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:20:43,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:20:43,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:20:43,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:20:43,778 INFO L87 Difference]: Start difference. First operand 157 states and 182 transitions. Second operand 5 states. [2020-08-22 01:20:44,248 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:20:45,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:20:45,346 INFO L93 Difference]: Finished difference Result 286 states and 343 transitions. [2020-08-22 01:20:45,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 01:20:45,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-22 01:20:45,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:20:45,351 INFO L225 Difference]: With dead ends: 286 [2020-08-22 01:20:45,351 INFO L226 Difference]: Without dead ends: 179 [2020-08-22 01:20:45,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:20:45,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-22 01:20:45,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 148. [2020-08-22 01:20:45,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-22 01:20:45,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 170 transitions. [2020-08-22 01:20:45,396 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 170 transitions. Word has length 60 [2020-08-22 01:20:45,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:20:45,397 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 170 transitions. [2020-08-22 01:20:45,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:20:45,397 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 170 transitions. [2020-08-22 01:20:45,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-22 01:20:45,398 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:20:45,399 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:20:45,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:20:45,399 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:20:45,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:20:45,400 INFO L82 PathProgramCache]: Analyzing trace with hash -8533593, now seen corresponding path program 1 times [2020-08-22 01:20:45,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:20:45,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127617399] [2020-08-22 01:20:45,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:20:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:45,751 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:20:45,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:45,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:20:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:45,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:20:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:45,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:20:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:45,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:20:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:45,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:20:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:45,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 01:20:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:45,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:45,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 01:20:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:45,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 01:20:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:45,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:20:45,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127617399] [2020-08-22 01:20:45,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:20:45,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:20:45,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060526326] [2020-08-22 01:20:45,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:20:45,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:20:45,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:20:45,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:20:45,885 INFO L87 Difference]: Start difference. First operand 148 states and 170 transitions. Second operand 9 states. [2020-08-22 01:20:46,316 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:20:46,640 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:20:46,886 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:20:47,117 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:20:48,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:20:48,497 INFO L93 Difference]: Finished difference Result 299 states and 362 transitions. [2020-08-22 01:20:48,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 01:20:48,500 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-22 01:20:48,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:20:48,503 INFO L225 Difference]: With dead ends: 299 [2020-08-22 01:20:48,503 INFO L226 Difference]: Without dead ends: 179 [2020-08-22 01:20:48,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-22 01:20:48,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-22 01:20:48,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 148. [2020-08-22 01:20:48,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-22 01:20:48,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 169 transitions. [2020-08-22 01:20:48,544 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 169 transitions. Word has length 65 [2020-08-22 01:20:48,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:20:48,544 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 169 transitions. [2020-08-22 01:20:48,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:20:48,545 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 169 transitions. [2020-08-22 01:20:48,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-22 01:20:48,546 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:20:48,546 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] [2020-08-22 01:20:48,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 01:20:48,547 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:20:48,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:20:48,547 INFO L82 PathProgramCache]: Analyzing trace with hash -2138732759, now seen corresponding path program 1 times [2020-08-22 01:20:48,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:20:48,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297477527] [2020-08-22 01:20:48,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:20:48,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:48,879 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:20:48,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:48,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:20:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:48,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:20:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:48,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:20:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:48,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:20:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:48,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:20:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:48,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 01:20:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:48,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:48,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 01:20:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:48,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:20:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:48,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:20:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:48,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-22 01:20:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:48,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 01:20:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:48,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:20:48,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297477527] [2020-08-22 01:20:48,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:20:48,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 01:20:48,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563448727] [2020-08-22 01:20:48,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 01:20:48,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:20:48,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 01:20:48,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:20:48,973 INFO L87 Difference]: Start difference. First operand 148 states and 169 transitions. Second operand 7 states. [2020-08-22 01:20:49,348 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:20:50,875 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:20:51,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:20:51,491 INFO L93 Difference]: Finished difference Result 403 states and 496 transitions. [2020-08-22 01:20:51,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 01:20:51,492 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-08-22 01:20:51,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:20:51,496 INFO L225 Difference]: With dead ends: 403 [2020-08-22 01:20:51,496 INFO L226 Difference]: Without dead ends: 283 [2020-08-22 01:20:51,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-22 01:20:51,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-08-22 01:20:51,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 237. [2020-08-22 01:20:51,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-22 01:20:51,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 270 transitions. [2020-08-22 01:20:51,601 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 270 transitions. Word has length 78 [2020-08-22 01:20:51,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:20:51,601 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 270 transitions. [2020-08-22 01:20:51,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 01:20:51,601 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 270 transitions. [2020-08-22 01:20:51,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-22 01:20:51,603 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:20:51,603 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] [2020-08-22 01:20:51,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 01:20:51,604 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:20:51,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:20:51,604 INFO L82 PathProgramCache]: Analyzing trace with hash 2116914143, now seen corresponding path program 1 times [2020-08-22 01:20:51,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:20:51,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762675735] [2020-08-22 01:20:51,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:20:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:51,908 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:20:51,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:51,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:51,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:20:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:51,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:20:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:51,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:20:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:51,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:20:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:51,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:20:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:51,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 01:20:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:52,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:52,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 01:20:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:52,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:20:52,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:52,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:20:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:52,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:52,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:20:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:52,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 01:20:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:52,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 01:20:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:52,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 01:20:52,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762675735] [2020-08-22 01:20:52,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:20:52,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:20:52,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980378957] [2020-08-22 01:20:52,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:20:52,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:20:52,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:20:52,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:20:52,073 INFO L87 Difference]: Start difference. First operand 237 states and 270 transitions. Second operand 9 states. [2020-08-22 01:20:52,500 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:20:53,195 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:20:54,060 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:20:54,367 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:20:54,891 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:20:55,159 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:20:55,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:20:55,723 INFO L93 Difference]: Finished difference Result 491 states and 592 transitions. [2020-08-22 01:20:55,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 01:20:55,725 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-22 01:20:55,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:20:55,728 INFO L225 Difference]: With dead ends: 491 [2020-08-22 01:20:55,728 INFO L226 Difference]: Without dead ends: 282 [2020-08-22 01:20:55,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 01:20:55,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-22 01:20:55,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 236. [2020-08-22 01:20:55,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-08-22 01:20:55,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 267 transitions. [2020-08-22 01:20:55,783 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 267 transitions. Word has length 92 [2020-08-22 01:20:55,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:20:55,784 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 267 transitions. [2020-08-22 01:20:55,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:20:55,784 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 267 transitions. [2020-08-22 01:20:55,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-22 01:20:55,786 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:20:55,786 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:20:55,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 01:20:55,786 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:20:55,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:20:55,787 INFO L82 PathProgramCache]: Analyzing trace with hash 660673946, now seen corresponding path program 1 times [2020-08-22 01:20:55,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:20:55,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523709162] [2020-08-22 01:20:55,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:20:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:56,033 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:20:56,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:56,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:20:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:56,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:20:56,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:56,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:20:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:56,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:20:56,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:56,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:20:56,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:56,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 01:20:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:56,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:56,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 01:20:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:56,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:20:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:56,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:20:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:56,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:56,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:20:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:56,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:56,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:56,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:20:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:56,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 01:20:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:56,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 01:20:56,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:56,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:20:56,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523709162] [2020-08-22 01:20:56,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:20:56,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:20:56,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992325767] [2020-08-22 01:20:56,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:20:56,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:20:56,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:20:56,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:20:56,226 INFO L87 Difference]: Start difference. First operand 236 states and 267 transitions. Second operand 9 states. [2020-08-22 01:20:57,257 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:20:57,493 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 01:20:57,727 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:20:57,953 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:20:58,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:20:58,924 INFO L93 Difference]: Finished difference Result 491 states and 595 transitions. [2020-08-22 01:20:58,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 01:20:58,929 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-08-22 01:20:58,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:20:58,933 INFO L225 Difference]: With dead ends: 491 [2020-08-22 01:20:58,933 INFO L226 Difference]: Without dead ends: 283 [2020-08-22 01:20:58,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 01:20:58,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-08-22 01:20:58,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 241. [2020-08-22 01:20:58,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-08-22 01:20:58,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 272 transitions. [2020-08-22 01:20:58,981 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 272 transitions. Word has length 108 [2020-08-22 01:20:58,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:20:58,981 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 272 transitions. [2020-08-22 01:20:58,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:20:58,981 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 272 transitions. [2020-08-22 01:20:58,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-22 01:20:58,983 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:20:58,983 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:20:58,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 01:20:58,984 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:20:58,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:20:58,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1706020648, now seen corresponding path program 1 times [2020-08-22 01:20:58,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:20:58,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632680460] [2020-08-22 01:20:58,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:20:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,237 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:20:59,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:20:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:20:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:20:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:20:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:20:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 01:20:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:59,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 01:20:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:20:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:20:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:20:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:20:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 01:20:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 01:20:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:59,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:20:59,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632680460] [2020-08-22 01:20:59,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:20:59,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 01:20:59,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856913939] [2020-08-22 01:20:59,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 01:20:59,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:20:59,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 01:20:59,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 01:20:59,463 INFO L87 Difference]: Start difference. First operand 241 states and 272 transitions. Second operand 11 states. [2020-08-22 01:21:00,023 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:00,315 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:00,550 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:01,297 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:01,599 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:01,848 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:02,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:21:02,704 INFO L93 Difference]: Finished difference Result 501 states and 606 transitions. [2020-08-22 01:21:02,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 01:21:02,705 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-22 01:21:02,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:21:02,709 INFO L225 Difference]: With dead ends: 501 [2020-08-22 01:21:02,709 INFO L226 Difference]: Without dead ends: 288 [2020-08-22 01:21:02,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 01:21:02,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-08-22 01:21:02,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 245. [2020-08-22 01:21:02,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-08-22 01:21:02,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 276 transitions. [2020-08-22 01:21:02,771 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 276 transitions. Word has length 108 [2020-08-22 01:21:02,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:21:02,771 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 276 transitions. [2020-08-22 01:21:02,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 01:21:02,772 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 276 transitions. [2020-08-22 01:21:02,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-22 01:21:02,773 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:21:02,773 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:21:02,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 01:21:02,774 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:21:02,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:21:02,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1946560777, now seen corresponding path program 1 times [2020-08-22 01:21:02,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:21:02,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489193459] [2020-08-22 01:21:02,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:21:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,121 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:21:03,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:21:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:21:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:21:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 01:21:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:03,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 01:21:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:21:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 01:21:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 01:21:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:03,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:21:03,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489193459] [2020-08-22 01:21:03,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:21:03,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 01:21:03,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118090690] [2020-08-22 01:21:03,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 01:21:03,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:21:03,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 01:21:03,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:21:03,257 INFO L87 Difference]: Start difference. First operand 245 states and 276 transitions. Second operand 7 states. [2020-08-22 01:21:03,635 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:04,186 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:06,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:21:06,034 INFO L93 Difference]: Finished difference Result 683 states and 844 transitions. [2020-08-22 01:21:06,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 01:21:06,035 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-08-22 01:21:06,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:21:06,038 INFO L225 Difference]: With dead ends: 683 [2020-08-22 01:21:06,038 INFO L226 Difference]: Without dead ends: 466 [2020-08-22 01:21:06,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-22 01:21:06,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-08-22 01:21:06,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 424. [2020-08-22 01:21:06,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2020-08-22 01:21:06,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 492 transitions. [2020-08-22 01:21:06,120 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 492 transitions. Word has length 108 [2020-08-22 01:21:06,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:21:06,120 INFO L479 AbstractCegarLoop]: Abstraction has 424 states and 492 transitions. [2020-08-22 01:21:06,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 01:21:06,121 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 492 transitions. [2020-08-22 01:21:06,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-22 01:21:06,123 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:21:06,123 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:21:06,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 01:21:06,123 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:21:06,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:21:06,124 INFO L82 PathProgramCache]: Analyzing trace with hash 79738257, now seen corresponding path program 1 times [2020-08-22 01:21:06,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:21:06,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038623806] [2020-08-22 01:21:06,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:21:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:06,443 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:21:06,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:06,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:21:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:06,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:06,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:06,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:21:06,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:06,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:21:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:06,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:21:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:06,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 01:21:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:06,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:06,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 01:21:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:06,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:06,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:06,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:06,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:21:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:06,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:06,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:06,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:06,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:06,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 01:21:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:06,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-22 01:21:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:06,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:21:06,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038623806] [2020-08-22 01:21:06,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:21:06,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 01:21:06,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019083443] [2020-08-22 01:21:06,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 01:21:06,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:21:06,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 01:21:06,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-22 01:21:06,617 INFO L87 Difference]: Start difference. First operand 424 states and 492 transitions. Second operand 12 states. [2020-08-22 01:21:07,345 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:08,081 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:09,113 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:09,422 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:09,685 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:09,979 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:10,259 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:11,644 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:11,889 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:12,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:21:12,711 INFO L93 Difference]: Finished difference Result 1180 states and 1453 transitions. [2020-08-22 01:21:12,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 01:21:12,715 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-08-22 01:21:12,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:21:12,722 INFO L225 Difference]: With dead ends: 1180 [2020-08-22 01:21:12,723 INFO L226 Difference]: Without dead ends: 858 [2020-08-22 01:21:12,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-22 01:21:12,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2020-08-22 01:21:12,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 736. [2020-08-22 01:21:12,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 736 states. [2020-08-22 01:21:12,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 846 transitions. [2020-08-22 01:21:12,864 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 846 transitions. Word has length 112 [2020-08-22 01:21:12,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:21:12,864 INFO L479 AbstractCegarLoop]: Abstraction has 736 states and 846 transitions. [2020-08-22 01:21:12,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 01:21:12,864 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 846 transitions. [2020-08-22 01:21:12,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-08-22 01:21:12,867 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:21:12,868 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:21:12,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 01:21:12,868 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:21:12,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:21:12,869 INFO L82 PathProgramCache]: Analyzing trace with hash -992810877, now seen corresponding path program 1 times [2020-08-22 01:21:12,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:21:12,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123175802] [2020-08-22 01:21:12,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:21:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:13,168 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:21:13,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:13,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:13,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:21:13,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:13,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:13,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:13,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:21:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:13,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:21:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:13,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:21:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:13,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 01:21:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:13,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:13,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:13,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:13,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:21:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:13,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:13,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:13,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:13,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:21:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:13,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:13,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:13,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:13,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 01:21:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:13,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:13,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-22 01:21:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:13,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:13,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-22 01:21:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:13,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 01:21:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:13,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:13,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:13,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:21:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:13,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:13,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-22 01:21:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:13,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-22 01:21:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:13,574 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 01:21:13,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123175802] [2020-08-22 01:21:13,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:21:13,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 01:21:13,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383014955] [2020-08-22 01:21:13,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 01:21:13,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:21:13,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 01:21:13,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-22 01:21:13,576 INFO L87 Difference]: Start difference. First operand 736 states and 846 transitions. Second operand 16 states. [2020-08-22 01:21:15,216 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 01:21:15,571 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 01:21:15,868 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 01:21:16,155 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 01:21:16,857 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-22 01:21:17,180 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 01:21:17,588 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-08-22 01:21:18,395 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 01:21:19,078 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:19,602 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-22 01:21:20,299 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-22 01:21:20,761 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-22 01:21:21,061 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:21,713 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:22,178 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-22 01:21:22,823 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-08-22 01:21:23,535 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 01:21:24,033 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-22 01:21:24,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:21:24,743 INFO L93 Difference]: Finished difference Result 1615 states and 1911 transitions. [2020-08-22 01:21:24,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-08-22 01:21:24,743 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 174 [2020-08-22 01:21:24,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:21:24,751 INFO L225 Difference]: With dead ends: 1615 [2020-08-22 01:21:24,751 INFO L226 Difference]: Without dead ends: 977 [2020-08-22 01:21:24,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=618, Invalid=2462, Unknown=0, NotChecked=0, Total=3080 [2020-08-22 01:21:24,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2020-08-22 01:21:24,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 884. [2020-08-22 01:21:24,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2020-08-22 01:21:24,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1024 transitions. [2020-08-22 01:21:24,982 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1024 transitions. Word has length 174 [2020-08-22 01:21:24,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:21:24,987 INFO L479 AbstractCegarLoop]: Abstraction has 884 states and 1024 transitions. [2020-08-22 01:21:24,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 01:21:24,988 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1024 transitions. [2020-08-22 01:21:25,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-08-22 01:21:25,001 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:21:25,001 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:21:25,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 01:21:25,002 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:21:25,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:21:25,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1611643875, now seen corresponding path program 1 times [2020-08-22 01:21:25,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:21:25,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552144726] [2020-08-22 01:21:25,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:21:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,366 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:21:25,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:21:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:25,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:21:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:21:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:21:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 01:21:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:21:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:21:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 01:21:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 01:21:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 01:21:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:21:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 01:21:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 01:21:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 01:21:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:21:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 01:21:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-08-22 01:21:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 01:21:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-22 01:21:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:21:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-08-22 01:21:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-08-22 01:21:25,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,034 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 84 proven. 29 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2020-08-22 01:21:26,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552144726] [2020-08-22 01:21:26,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:21:26,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 01:21:26,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390348861] [2020-08-22 01:21:26,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 01:21:26,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:21:26,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 01:21:26,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-22 01:21:26,038 INFO L87 Difference]: Start difference. First operand 884 states and 1024 transitions. Second operand 15 states. [2020-08-22 01:21:27,711 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:28,005 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:28,278 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:28,540 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:30,246 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:31,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:21:31,450 INFO L93 Difference]: Finished difference Result 2344 states and 2821 transitions. [2020-08-22 01:21:31,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 01:21:31,456 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 311 [2020-08-22 01:21:31,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:21:31,464 INFO L225 Difference]: With dead ends: 2344 [2020-08-22 01:21:31,464 INFO L226 Difference]: Without dead ends: 1393 [2020-08-22 01:21:31,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 109 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-22 01:21:31,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2020-08-22 01:21:31,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1174. [2020-08-22 01:21:31,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1174 states. [2020-08-22 01:21:31,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1389 transitions. [2020-08-22 01:21:31,667 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1389 transitions. Word has length 311 [2020-08-22 01:21:31,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:21:31,670 INFO L479 AbstractCegarLoop]: Abstraction has 1174 states and 1389 transitions. [2020-08-22 01:21:31,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 01:21:31,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1389 transitions. [2020-08-22 01:21:31,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-08-22 01:21:31,681 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:21:31,681 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 01:21:31,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 01:21:31,682 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:21:31,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:21:31,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1867648024, now seen corresponding path program 1 times [2020-08-22 01:21:31,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:21:31,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713658366] [2020-08-22 01:21:31,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:21:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,093 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:21:32,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:21:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:21:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:21:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:21:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 01:21:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:21:32,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:21:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:32,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 01:21:32,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 01:21:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:32,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 01:21:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:21:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 01:21:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 01:21:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-22 01:21:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 01:21:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:21:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 01:21:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 01:21:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-22 01:21:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-22 01:21:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:21:32,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-08-22 01:21:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-08-22 01:21:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:32,548 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 91 proven. 38 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-08-22 01:21:32,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713658366] [2020-08-22 01:21:32,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:21:32,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 01:21:32,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050372154] [2020-08-22 01:21:32,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 01:21:32,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:21:32,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 01:21:32,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-22 01:21:32,552 INFO L87 Difference]: Start difference. First operand 1174 states and 1389 transitions. Second operand 16 states. [2020-08-22 01:21:33,126 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:33,469 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:33,738 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:34,001 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:34,742 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:35,691 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:35,975 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:36,475 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:37,125 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:37,945 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:38,211 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191