/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 17:49:00,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:49:00,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:49:00,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:49:00,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:49:00,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:49:00,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:49:00,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:49:00,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:49:00,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:49:00,513 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:49:00,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:49:00,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:49:00,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:49:00,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:49:00,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:49:00,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:49:00,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:49:00,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:49:00,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:49:00,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:49:00,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:49:00,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:49:00,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:49:00,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 17:49:00,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 17:49:00,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 17:49:00,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 17:49:00,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 17:49:00,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 17:49:00,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 17:49:00,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 17:49:00,533 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 17:49:00,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 17:49:00,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 17:49:00,535 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 17:49:00,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 17:49:00,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 17:49:00,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:49:00,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:49:00,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:49:00,538 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 17:49:00,560 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:49:00,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:49:00,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:49:00,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:49:00,562 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:49:00,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:49:00,562 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:49:00,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:49:00,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:49:00,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:49:00,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:49:00,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:49:00,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:49:00,564 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:49:00,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:49:00,564 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:49:00,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:49:00,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:49:00,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:49:00,565 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:49:00,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:49:00,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:49:00,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:49:00,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:49:00,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:49:00,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:49:00,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:49:00,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:49:00,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:49:00,567 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 17:49:00,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:49:00,904 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:49:00,909 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:49:00,910 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:49:00,911 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:49:00,913 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product61.cil.c [2020-08-18 17:49:00,993 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f36a0ddf/967370c83d0646268bce8fae87ac777c/FLAG0e68f859a [2020-08-18 17:49:01,562 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:49:01,563 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product61.cil.c [2020-08-18 17:49:01,591 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f36a0ddf/967370c83d0646268bce8fae87ac777c/FLAG0e68f859a [2020-08-18 17:49:01,858 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f36a0ddf/967370c83d0646268bce8fae87ac777c [2020-08-18 17:49:01,868 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:49:01,869 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:49:01,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:49:01,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:49:01,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:49:01,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:49:01" (1/1) ... [2020-08-18 17:49:01,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b54cc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:49:01, skipping insertion in model container [2020-08-18 17:49:01,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:49:01" (1/1) ... [2020-08-18 17:49:01,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:49:01,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:49:02,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:49:02,470 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:49:02,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:49:02,674 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:49:02,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:49:02 WrapperNode [2020-08-18 17:49:02,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:49:02,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:49:02,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:49:02,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:49:02,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:49:02" (1/1) ... [2020-08-18 17:49:02,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:49:02" (1/1) ... [2020-08-18 17:49:02,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:49:02" (1/1) ... [2020-08-18 17:49:02,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:49:02" (1/1) ... [2020-08-18 17:49:02,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:49:02" (1/1) ... [2020-08-18 17:49:02,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:49:02" (1/1) ... [2020-08-18 17:49:02,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:49:02" (1/1) ... [2020-08-18 17:49:02,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:49:02,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:49:02,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:49:02,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:49:02,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:49:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:49:02,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:49:02,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:49:02,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 17:49:02,826 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 17:49:02,826 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 17:49:02,827 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 17:49:02,827 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 17:49:02,827 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 17:49:02,827 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 17:49:02,827 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 17:49:02,828 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 17:49:02,828 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 17:49:02,828 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 17:49:02,828 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 17:49:02,828 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 17:49:02,828 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 17:49:02,829 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 17:49:02,829 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 17:49:02,829 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 17:49:02,829 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 17:49:02,830 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 17:49:02,830 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 17:49:02,830 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 17:49:02,830 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 17:49:02,830 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 17:49:02,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 17:49:02,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 17:49:02,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 17:49:02,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 17:49:02,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 17:49:02,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 17:49:02,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 17:49:02,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 17:49:02,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 17:49:02,832 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 17:49:02,832 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 17:49:02,833 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 17:49:02,833 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 17:49:02,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 17:49:02,833 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 17:49:02,833 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 17:49:02,834 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 17:49:02,834 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 17:49:02,834 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:49:02,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:49:02,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 17:49:02,834 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 17:49:02,835 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 17:49:02,835 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 17:49:02,835 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 17:49:02,835 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 17:49:02,835 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 17:49:02,835 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 17:49:02,835 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 17:49:02,836 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 17:49:02,836 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 17:49:02,836 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 17:49:02,836 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 17:49:02,836 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 17:49:02,837 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 17:49:02,837 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 17:49:02,837 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 17:49:02,837 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 17:49:02,837 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 17:49:02,837 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 17:49:02,837 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 17:49:02,838 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 17:49:02,838 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 17:49:02,838 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 17:49:02,838 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 17:49:02,838 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 17:49:02,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 17:49:02,839 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 17:49:02,839 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 17:49:02,839 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 17:49:02,839 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 17:49:02,839 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 17:49:02,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 17:49:02,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 17:49:02,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 17:49:02,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 17:49:02,840 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 17:49:02,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 17:49:02,840 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 17:49:02,840 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 17:49:02,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 17:49:02,841 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 17:49:02,841 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 17:49:02,841 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 17:49:02,841 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 17:49:02,841 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 17:49:02,841 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 17:49:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 17:49:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 17:49:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 17:49:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 17:49:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 17:49:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 17:49:02,843 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:49:02,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:49:02,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 17:49:02,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:49:03,928 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:49:03,929 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 17:49:03,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:49:03 BoogieIcfgContainer [2020-08-18 17:49:03,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:49:03,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:49:03,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:49:03,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:49:03,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:49:01" (1/3) ... [2020-08-18 17:49:03,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c53790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:49:03, skipping insertion in model container [2020-08-18 17:49:03,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:49:02" (2/3) ... [2020-08-18 17:49:03,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c53790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:49:03, skipping insertion in model container [2020-08-18 17:49:03,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:49:03" (3/3) ... [2020-08-18 17:49:03,942 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product61.cil.c [2020-08-18 17:49:03,952 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:49:03,960 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 17:49:03,974 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 17:49:03,999 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:49:03,999 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:49:03,999 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:49:04,000 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:49:04,000 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:49:04,000 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:49:04,000 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:49:04,000 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:49:04,023 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2020-08-18 17:49:04,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 17:49:04,033 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:49:04,034 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:49:04,034 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:49:04,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:49:04,039 INFO L82 PathProgramCache]: Analyzing trace with hash -748532366, now seen corresponding path program 1 times [2020-08-18 17:49:04,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:49:04,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618838095] [2020-08-18 17:49:04,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:49:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:04,675 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:49:04,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:04,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:04,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:49:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:04,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:49:04,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:04,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:49:04,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:04,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:49:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:04,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:49:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:04,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:49:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:04,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:04,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 17:49:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:04,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 17:49:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:04,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 17:49:04,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618838095] [2020-08-18 17:49:04,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:49:04,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 17:49:04,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401366902] [2020-08-18 17:49:04,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:49:04,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:49:04,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:49:04,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:49:04,835 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 4 states. [2020-08-18 17:49:06,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:49:06,013 INFO L93 Difference]: Finished difference Result 357 states and 456 transitions. [2020-08-18 17:49:06,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 17:49:06,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 17:49:06,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:49:06,031 INFO L225 Difference]: With dead ends: 357 [2020-08-18 17:49:06,031 INFO L226 Difference]: Without dead ends: 195 [2020-08-18 17:49:06,036 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 [2020-08-18 17:49:06,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-08-18 17:49:06,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 163. [2020-08-18 17:49:06,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-08-18 17:49:06,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 193 transitions. [2020-08-18 17:49:06,156 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 193 transitions. Word has length 59 [2020-08-18 17:49:06,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:49:06,157 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 193 transitions. [2020-08-18 17:49:06,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:49:06,157 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 193 transitions. [2020-08-18 17:49:06,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 17:49:06,161 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:49:06,162 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] [2020-08-18 17:49:06,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:49:06,162 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:49:06,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:49:06,163 INFO L82 PathProgramCache]: Analyzing trace with hash -733015768, now seen corresponding path program 1 times [2020-08-18 17:49:06,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:49:06,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450632389] [2020-08-18 17:49:06,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:49:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:06,530 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:49:06,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:06,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:49:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:06,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:49:06,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:06,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:49:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:06,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:49:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:06,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:49:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:06,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 17:49:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:06,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:06,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 17:49:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:06,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 17:49:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:06,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 17:49:06,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450632389] [2020-08-18 17:49:06,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:49:06,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 17:49:06,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105690973] [2020-08-18 17:49:06,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 17:49:06,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:49:06,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 17:49:06,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 17:49:06,627 INFO L87 Difference]: Start difference. First operand 163 states and 193 transitions. Second operand 9 states. [2020-08-18 17:49:07,045 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:49:07,364 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:49:07,614 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:49:07,842 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:49:09,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:49:09,364 INFO L93 Difference]: Finished difference Result 330 states and 411 transitions. [2020-08-18 17:49:09,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 17:49:09,365 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-18 17:49:09,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:49:09,369 INFO L225 Difference]: With dead ends: 330 [2020-08-18 17:49:09,369 INFO L226 Difference]: Without dead ends: 195 [2020-08-18 17:49:09,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 17:49:09,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-08-18 17:49:09,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 163. [2020-08-18 17:49:09,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-08-18 17:49:09,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 192 transitions. [2020-08-18 17:49:09,417 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 192 transitions. Word has length 64 [2020-08-18 17:49:09,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:49:09,418 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 192 transitions. [2020-08-18 17:49:09,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 17:49:09,418 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 192 transitions. [2020-08-18 17:49:09,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 17:49:09,421 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:49:09,421 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] [2020-08-18 17:49:09,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 17:49:09,421 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:49:09,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:49:09,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1142393912, now seen corresponding path program 1 times [2020-08-18 17:49:09,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:49:09,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492833110] [2020-08-18 17:49:09,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:49:09,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:09,700 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:49:09,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:09,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:49:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:09,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:49:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:09,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:49:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:09,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:49:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:09,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:49:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:09,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 17:49:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:09,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:09,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 17:49:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:09,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:09,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:09,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:09,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 17:49:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:09,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 17:49:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:09,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 17:49:09,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492833110] [2020-08-18 17:49:09,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:49:09,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 17:49:09,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739494015] [2020-08-18 17:49:09,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 17:49:09,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:49:09,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 17:49:09,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 17:49:09,796 INFO L87 Difference]: Start difference. First operand 163 states and 192 transitions. Second operand 6 states. [2020-08-18 17:49:10,317 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:49:11,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:49:11,470 INFO L93 Difference]: Finished difference Result 317 states and 394 transitions. [2020-08-18 17:49:11,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 17:49:11,471 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-08-18 17:49:11,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:49:11,474 INFO L225 Difference]: With dead ends: 317 [2020-08-18 17:49:11,474 INFO L226 Difference]: Without dead ends: 200 [2020-08-18 17:49:11,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-08-18 17:49:11,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-08-18 17:49:11,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 154. [2020-08-18 17:49:11,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-08-18 17:49:11,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 180 transitions. [2020-08-18 17:49:11,509 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 180 transitions. Word has length 78 [2020-08-18 17:49:11,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:49:11,510 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 180 transitions. [2020-08-18 17:49:11,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 17:49:11,510 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 180 transitions. [2020-08-18 17:49:11,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-18 17:49:11,512 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:49:11,512 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] [2020-08-18 17:49:11,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 17:49:11,512 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:49:11,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:49:11,513 INFO L82 PathProgramCache]: Analyzing trace with hash 330531379, now seen corresponding path program 1 times [2020-08-18 17:49:11,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:49:11,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940371466] [2020-08-18 17:49:11,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:49:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:11,796 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:49:11,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:11,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:49:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:11,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:49:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:11,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:49:11,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:11,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:49:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:11,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:49:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:11,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 17:49:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:11,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:11,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:11,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 17:49:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:11,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:11,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:11,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:11,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:11,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-18 17:49:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:11,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 17:49:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:11,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 17:49:11,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940371466] [2020-08-18 17:49:11,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:49:11,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 17:49:11,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898349352] [2020-08-18 17:49:11,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 17:49:11,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:49:11,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 17:49:11,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 17:49:11,988 INFO L87 Difference]: Start difference. First operand 154 states and 180 transitions. Second operand 7 states. [2020-08-18 17:49:12,311 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:49:13,795 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:49:14,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:49:14,419 INFO L93 Difference]: Finished difference Result 424 states and 525 transitions. [2020-08-18 17:49:14,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 17:49:14,419 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-08-18 17:49:14,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:49:14,422 INFO L225 Difference]: With dead ends: 424 [2020-08-18 17:49:14,423 INFO L226 Difference]: Without dead ends: 298 [2020-08-18 17:49:14,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 17:49:14,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-08-18 17:49:14,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 255. [2020-08-18 17:49:14,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-08-18 17:49:14,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 290 transitions. [2020-08-18 17:49:14,473 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 290 transitions. Word has length 82 [2020-08-18 17:49:14,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:49:14,473 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 290 transitions. [2020-08-18 17:49:14,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 17:49:14,473 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 290 transitions. [2020-08-18 17:49:14,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-18 17:49:14,475 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:49:14,475 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] [2020-08-18 17:49:14,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 17:49:14,476 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:49:14,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:49:14,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1154984362, now seen corresponding path program 1 times [2020-08-18 17:49:14,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:49:14,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982959603] [2020-08-18 17:49:14,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:49:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:14,757 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:49:14,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:14,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:49:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:14,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:49:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:14,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:49:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:14,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:49:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:14,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:49:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:14,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 17:49:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:14,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:14,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 17:49:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:14,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:14,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:14,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:14,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:14,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:49:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:14,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 17:49:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:14,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 17:49:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:14,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 17:49:14,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982959603] [2020-08-18 17:49:14,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:49:14,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 17:49:14,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637843177] [2020-08-18 17:49:14,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 17:49:14,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:49:14,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 17:49:14,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 17:49:14,879 INFO L87 Difference]: Start difference. First operand 255 states and 290 transitions. Second operand 9 states. [2020-08-18 17:49:15,367 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:49:15,993 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:49:16,856 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:49:17,152 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:49:17,611 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:49:17,856 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:49:18,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:49:18,538 INFO L93 Difference]: Finished difference Result 524 states and 626 transitions. [2020-08-18 17:49:18,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 17:49:18,539 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-08-18 17:49:18,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:49:18,543 INFO L225 Difference]: With dead ends: 524 [2020-08-18 17:49:18,543 INFO L226 Difference]: Without dead ends: 297 [2020-08-18 17:49:18,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 17:49:18,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-08-18 17:49:18,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 254. [2020-08-18 17:49:18,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-08-18 17:49:18,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 287 transitions. [2020-08-18 17:49:18,596 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 287 transitions. Word has length 96 [2020-08-18 17:49:18,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:49:18,596 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 287 transitions. [2020-08-18 17:49:18,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 17:49:18,597 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 287 transitions. [2020-08-18 17:49:18,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-18 17:49:18,598 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:49:18,598 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] [2020-08-18 17:49:18,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 17:49:18,599 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:49:18,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:49:18,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1590195415, now seen corresponding path program 1 times [2020-08-18 17:49:18,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:49:18,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957803325] [2020-08-18 17:49:18,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:49:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:18,863 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:49:18,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:18,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:49:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:18,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:49:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:18,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:49:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:18,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:49:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:18,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:49:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:18,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 17:49:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:18,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:18,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 17:49:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:18,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:18,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:18,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:19,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:19,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:49:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:19,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:19,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:19,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:19,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:49:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:19,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 17:49:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:19,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 17:49:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:19,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 17:49:19,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957803325] [2020-08-18 17:49:19,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:49:19,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 17:49:19,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965248946] [2020-08-18 17:49:19,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 17:49:19,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:49:19,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 17:49:19,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 17:49:19,055 INFO L87 Difference]: Start difference. First operand 254 states and 287 transitions. Second operand 9 states. [2020-08-18 17:49:20,037 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:49:20,281 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 17:49:20,540 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:49:20,789 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:49:21,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:49:21,716 INFO L93 Difference]: Finished difference Result 524 states and 631 transitions. [2020-08-18 17:49:21,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 17:49:21,726 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 112 [2020-08-18 17:49:21,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:49:21,729 INFO L225 Difference]: With dead ends: 524 [2020-08-18 17:49:21,730 INFO L226 Difference]: Without dead ends: 298 [2020-08-18 17:49:21,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 17:49:21,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-08-18 17:49:21,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 259. [2020-08-18 17:49:21,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-08-18 17:49:21,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 292 transitions. [2020-08-18 17:49:21,784 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 292 transitions. Word has length 112 [2020-08-18 17:49:21,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:49:21,785 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 292 transitions. [2020-08-18 17:49:21,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 17:49:21,785 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 292 transitions. [2020-08-18 17:49:21,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-18 17:49:21,786 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:49:21,787 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] [2020-08-18 17:49:21,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 17:49:21,787 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:49:21,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:49:21,788 INFO L82 PathProgramCache]: Analyzing trace with hash -765609835, now seen corresponding path program 1 times [2020-08-18 17:49:21,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:49:21,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90126972] [2020-08-18 17:49:21,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:49:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:22,052 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:49:22,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:22,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:49:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:22,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:49:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:22,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:49:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:22,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:49:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:22,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:49:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:22,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 17:49:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:22,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:22,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 17:49:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:22,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:22,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:22,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:22,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:22,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:22,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:49:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:22,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:22,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:22,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:22,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:22,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:49:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:22,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 17:49:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:22,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 17:49:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:22,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 17:49:22,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90126972] [2020-08-18 17:49:22,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:49:22,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 17:49:22,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123625402] [2020-08-18 17:49:22,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 17:49:22,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:49:22,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 17:49:22,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 17:49:22,313 INFO L87 Difference]: Start difference. First operand 259 states and 292 transitions. Second operand 11 states. [2020-08-18 17:49:23,082 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:49:23,352 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:49:23,578 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:49:24,231 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:49:24,474 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:49:24,706 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:49:25,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:49:25,807 INFO L93 Difference]: Finished difference Result 534 states and 642 transitions. [2020-08-18 17:49:25,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 17:49:25,812 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 112 [2020-08-18 17:49:25,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:49:25,815 INFO L225 Difference]: With dead ends: 534 [2020-08-18 17:49:25,815 INFO L226 Difference]: Without dead ends: 303 [2020-08-18 17:49:25,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 17:49:25,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-08-18 17:49:25,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 263. [2020-08-18 17:49:25,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-08-18 17:49:25,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 296 transitions. [2020-08-18 17:49:25,859 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 296 transitions. Word has length 112 [2020-08-18 17:49:25,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:49:25,860 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 296 transitions. [2020-08-18 17:49:25,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 17:49:25,860 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 296 transitions. [2020-08-18 17:49:25,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-18 17:49:25,862 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:49:25,862 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] [2020-08-18 17:49:25,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 17:49:25,862 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:49:25,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:49:25,863 INFO L82 PathProgramCache]: Analyzing trace with hash 3560180, now seen corresponding path program 1 times [2020-08-18 17:49:25,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:49:25,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492827244] [2020-08-18 17:49:25,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:49:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:26,160 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:49:26,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:26,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:49:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:26,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:49:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:26,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:49:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:26,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:49:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:26,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:49:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:26,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 17:49:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:26,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:26,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 17:49:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:26,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:26,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:26,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:26,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:26,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:49:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:26,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:26,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:26,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:49:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:26,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 17:49:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:26,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 17:49:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:26,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 17:49:26,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492827244] [2020-08-18 17:49:26,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:49:26,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 17:49:26,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012388699] [2020-08-18 17:49:26,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 17:49:26,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:49:26,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 17:49:26,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 17:49:26,372 INFO L87 Difference]: Start difference. First operand 263 states and 296 transitions. Second operand 7 states. [2020-08-18 17:49:26,728 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:49:27,252 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:49:29,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:49:29,102 INFO L93 Difference]: Finished difference Result 713 states and 879 transitions. [2020-08-18 17:49:29,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 17:49:29,102 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2020-08-18 17:49:29,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:49:29,107 INFO L225 Difference]: With dead ends: 713 [2020-08-18 17:49:29,107 INFO L226 Difference]: Without dead ends: 478 [2020-08-18 17:49:29,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 17:49:29,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-08-18 17:49:29,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 440. [2020-08-18 17:49:29,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2020-08-18 17:49:29,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 512 transitions. [2020-08-18 17:49:29,184 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 512 transitions. Word has length 112 [2020-08-18 17:49:29,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:49:29,185 INFO L479 AbstractCegarLoop]: Abstraction has 440 states and 512 transitions. [2020-08-18 17:49:29,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 17:49:29,185 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 512 transitions. [2020-08-18 17:49:29,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-08-18 17:49:29,187 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:49:29,187 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, 1, 1, 1, 1] [2020-08-18 17:49:29,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 17:49:29,188 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:49:29,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:49:29,188 INFO L82 PathProgramCache]: Analyzing trace with hash -427651474, now seen corresponding path program 1 times [2020-08-18 17:49:29,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:49:29,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593387195] [2020-08-18 17:49:29,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:49:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:29,582 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:49:29,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:29,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:49:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:29,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:49:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:29,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:49:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:29,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:49:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:29,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:49:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:29,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:49:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:29,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 17:49:29,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:29,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:29,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 17:49:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:29,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:29,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:29,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:29,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:29,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:29,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:49:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:29,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:29,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:29,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:49:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:29,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 17:49:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:29,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 17:49:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:29,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 17:49:29,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593387195] [2020-08-18 17:49:29,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:49:29,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 17:49:29,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219683553] [2020-08-18 17:49:29,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 17:49:29,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:49:29,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 17:49:29,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 17:49:29,750 INFO L87 Difference]: Start difference. First operand 440 states and 512 transitions. Second operand 12 states. [2020-08-18 17:49:30,290 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:49:30,937 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:49:32,058 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:49:32,362 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:49:32,618 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:49:32,895 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:49:33,208 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:49:34,668 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:49:34,922 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:49:35,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:49:35,855 INFO L93 Difference]: Finished difference Result 1217 states and 1501 transitions. [2020-08-18 17:49:35,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 17:49:35,856 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 116 [2020-08-18 17:49:35,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:49:35,865 INFO L225 Difference]: With dead ends: 1217 [2020-08-18 17:49:35,866 INFO L226 Difference]: Without dead ends: 880 [2020-08-18 17:49:35,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 17:49:35,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2020-08-18 17:49:35,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 767. [2020-08-18 17:49:35,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 767 states. [2020-08-18 17:49:35,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 883 transitions. [2020-08-18 17:49:35,987 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 883 transitions. Word has length 116 [2020-08-18 17:49:35,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:49:35,988 INFO L479 AbstractCegarLoop]: Abstraction has 767 states and 883 transitions. [2020-08-18 17:49:35,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 17:49:35,988 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 883 transitions. [2020-08-18 17:49:35,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-08-18 17:49:35,991 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:49:35,992 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:49:35,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 17:49:35,992 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:49:35,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:49:35,992 INFO L82 PathProgramCache]: Analyzing trace with hash -701597495, now seen corresponding path program 1 times [2020-08-18 17:49:35,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:49:35,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626304861] [2020-08-18 17:49:35,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:49:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,364 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:49:36,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:49:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:49:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:49:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:49:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:49:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:49:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 17:49:36,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:49:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:49:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:49:36,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 17:49:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 17:49:36,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 17:49:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-18 17:49:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 17:49:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:49:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-18 17:49:36,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 17:49:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:36,815 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-08-18 17:49:36,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626304861] [2020-08-18 17:49:36,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:49:36,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 17:49:36,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731926108] [2020-08-18 17:49:36,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 17:49:36,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:49:36,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 17:49:36,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 17:49:36,818 INFO L87 Difference]: Start difference. First operand 767 states and 883 transitions. Second operand 16 states. [2020-08-18 17:49:37,670 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:49:38,023 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 17:49:38,302 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 17:49:38,557 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 17:49:39,166 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:49:39,469 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:49:40,369 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 17:49:40,909 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:49:41,309 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 17:49:41,699 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:49:41,956 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:49:42,264 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:49:42,754 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:49:43,139 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:49:43,733 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:49:44,017 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 17:49:44,483 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 17:49:45,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:49:45,011 INFO L93 Difference]: Finished difference Result 1642 states and 1948 transitions. [2020-08-18 17:49:45,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-18 17:49:45,012 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 193 [2020-08-18 17:49:45,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:49:45,019 INFO L225 Difference]: With dead ends: 1642 [2020-08-18 17:49:45,019 INFO L226 Difference]: Without dead ends: 974 [2020-08-18 17:49:45,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=568, Invalid=2084, Unknown=0, NotChecked=0, Total=2652 [2020-08-18 17:49:45,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2020-08-18 17:49:45,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 895. [2020-08-18 17:49:45,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 895 states. [2020-08-18 17:49:45,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1041 transitions. [2020-08-18 17:49:45,198 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1041 transitions. Word has length 193 [2020-08-18 17:49:45,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:49:45,199 INFO L479 AbstractCegarLoop]: Abstraction has 895 states and 1041 transitions. [2020-08-18 17:49:45,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 17:49:45,199 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1041 transitions. [2020-08-18 17:49:45,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-08-18 17:49:45,207 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:49:45,208 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, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 17:49:45,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 17:49:45,208 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:49:45,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:49:45,209 INFO L82 PathProgramCache]: Analyzing trace with hash 833806897, now seen corresponding path program 1 times [2020-08-18 17:49:45,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:49:45,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497236878] [2020-08-18 17:49:45,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:49:45,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,576 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:49:45,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:49:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:49:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:49:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:49:45,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:49:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:49:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 17:49:45,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:49:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:45,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:49:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:49:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 17:49:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 17:49:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:49:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 17:49:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:45,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 17:49:45,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:49:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 17:49:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-18 17:49:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:49:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 17:49:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:45,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 17:49:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 17:49:45,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-18 17:49:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-08-18 17:49:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-08-18 17:49:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:49:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:45,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:49:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-08-18 17:49:45,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:45,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-18 17:49:45,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:46,073 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 77 proven. 7 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2020-08-18 17:49:46,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497236878] [2020-08-18 17:49:46,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:49:46,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 17:49:46,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404152740] [2020-08-18 17:49:46,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 17:49:46,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:49:46,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 17:49:46,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-08-18 17:49:46,076 INFO L87 Difference]: Start difference. First operand 895 states and 1041 transitions. Second operand 14 states. [2020-08-18 17:49:46,809 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:49:47,529 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:49:48,584 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:49:48,914 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:49:49,200 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:49:49,504 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 17:49:49,885 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 17:49:50,188 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 17:49:51,736 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:49:52,237 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-08-18 17:49:52,560 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 17:49:52,824 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-18 17:49:54,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:49:54,225 INFO L93 Difference]: Finished difference Result 2647 states and 3144 transitions. [2020-08-18 17:49:54,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-18 17:49:54,226 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 331 [2020-08-18 17:49:54,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:49:54,236 INFO L225 Difference]: With dead ends: 2647 [2020-08-18 17:49:54,237 INFO L226 Difference]: Without dead ends: 1788 [2020-08-18 17:49:54,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=316, Invalid=1244, Unknown=0, NotChecked=0, Total=1560 [2020-08-18 17:49:54,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2020-08-18 17:49:54,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 1747. [2020-08-18 17:49:54,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1747 states. [2020-08-18 17:49:54,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 2006 transitions. [2020-08-18 17:49:54,497 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 2006 transitions. Word has length 331 [2020-08-18 17:49:54,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:49:54,498 INFO L479 AbstractCegarLoop]: Abstraction has 1747 states and 2006 transitions. [2020-08-18 17:49:54,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 17:49:54,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 2006 transitions. [2020-08-18 17:49:54,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-08-18 17:49:54,508 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:49:54,508 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 17:49:54,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 17:49:54,509 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:49:54,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:49:54,509 INFO L82 PathProgramCache]: Analyzing trace with hash -944820455, now seen corresponding path program 1 times [2020-08-18 17:49:54,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:49:54,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232958293] [2020-08-18 17:49:54,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:49:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:54,858 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:49:54,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:54,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:49:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:54,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:49:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:54,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:49:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:54,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:49:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:54,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:49:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:54,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:49:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:54,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 17:49:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:54,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 17:49:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:54,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:54,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:54,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:49:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:49:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:55,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:49:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 17:49:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-18 17:49:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:49:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 17:49:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 17:49:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:49:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 17:49:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-08-18 17:49:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:49:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 17:49:55,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 17:49:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 17:49:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-08-18 17:49:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:49:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-08-18 17:49:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:49:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:49:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:49:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:49:55,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-08-18 17:49:55,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-18 17:49:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:49:55,656 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 54 proven. 40 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2020-08-18 17:49:55,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232958293] [2020-08-18 17:49:55,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:49:55,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 17:49:55,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989134430] [2020-08-18 17:49:55,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 17:49:55,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:49:55,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 17:49:55,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-08-18 17:49:55,661 INFO L87 Difference]: Start difference. First operand 1747 states and 2006 transitions. Second operand 19 states. [2020-08-18 17:49:56,269 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:49:56,628 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:49:56,899 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:49:57,142 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:49:57,832 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:49:59,107 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:49:59,450 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:49:59,747 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:50:00,045 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:50:00,391 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:50:00,689 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:50:01,314 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-18 17:50:01,928 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191