/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:18:44,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:18:44,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:18:44,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:18:44,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:18:44,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:18:44,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:18:44,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:18:44,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:18:44,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:18:44,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:18:44,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:18:44,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:18:44,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:18:44,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:18:44,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:18:44,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:18:44,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:18:44,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:18:44,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:18:44,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:18:44,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:18:44,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:18:44,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:18:44,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:18:44,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:18:44,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:18:44,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:18:44,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:18:44,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:18:44,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:18:44,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:18:44,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:18:44,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:18:44,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:18:44,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:18:44,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:18:44,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:18:44,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:18:44,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:18:44,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:18:44,700 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 04:18:44,724 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:18:44,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:18:44,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:18:44,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:18:44,726 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:18:44,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:18:44,726 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:18:44,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:18:44,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:18:44,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:18:44,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:18:44,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:18:44,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:18:44,727 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:18:44,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:18:44,728 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:18:44,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:18:44,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:18:44,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:18:44,728 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:18:44,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:18:44,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:18:44,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:18:44,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:18:44,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:18:44,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:18:44,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:18:44,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:18:44,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:18:44,731 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:18:45,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:18:45,033 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:18:45,037 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:18:45,038 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:18:45,039 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:18:45,040 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c [2020-08-19 04:18:45,134 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3be48cda8/19e0f2b2d3fa479c9c3a0f70353a0627/FLAG42f291295 [2020-08-19 04:18:45,696 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:18:45,699 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c [2020-08-19 04:18:45,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3be48cda8/19e0f2b2d3fa479c9c3a0f70353a0627/FLAG42f291295 [2020-08-19 04:18:45,966 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3be48cda8/19e0f2b2d3fa479c9c3a0f70353a0627 [2020-08-19 04:18:45,975 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:18:45,977 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:18:45,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:18:45,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:18:45,981 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:18:45,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:18:45" (1/1) ... [2020-08-19 04:18:45,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22589b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:45, skipping insertion in model container [2020-08-19 04:18:45,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:18:45" (1/1) ... [2020-08-19 04:18:45,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:18:46,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:18:46,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:18:46,497 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:18:46,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:18:46,617 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:18:46,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:46 WrapperNode [2020-08-19 04:18:46,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:18:46,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:18:46,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:18:46,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:18:46,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:46" (1/1) ... [2020-08-19 04:18:46,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:46" (1/1) ... [2020-08-19 04:18:46,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:46" (1/1) ... [2020-08-19 04:18:46,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:46" (1/1) ... [2020-08-19 04:18:46,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:46" (1/1) ... [2020-08-19 04:18:46,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:46" (1/1) ... [2020-08-19 04:18:46,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:46" (1/1) ... [2020-08-19 04:18:46,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:18:46,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:18:46,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:18:46,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:18:46,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:18:46,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:18:46,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:18:46,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 04:18:46,776 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 04:18:46,776 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 04:18:46,776 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 04:18:46,777 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 04:18:46,777 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 04:18:46,777 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 04:18:46,778 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 04:18:46,778 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 04:18:46,778 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 04:18:46,778 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 04:18:46,779 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 04:18:46,779 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 04:18:46,779 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 04:18:46,779 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 04:18:46,780 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 04:18:46,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-19 04:18:46,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-19 04:18:46,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-19 04:18:46,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 04:18:46,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 04:18:46,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 04:18:46,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 04:18:46,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 04:18:46,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 04:18:46,781 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 04:18:46,781 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 04:18:46,781 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 04:18:46,781 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 04:18:46,781 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:18:46,781 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 04:18:46,782 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 04:18:46,782 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 04:18:46,782 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 04:18:46,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 04:18:46,782 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 04:18:46,782 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 04:18:46,782 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 04:18:46,783 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 04:18:46,783 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 04:18:46,783 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 04:18:46,783 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 04:18:46,783 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 04:18:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:18:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:18:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 04:18:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 04:18:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 04:18:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 04:18:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 04:18:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 04:18:46,785 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 04:18:46,785 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 04:18:46,785 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 04:18:46,785 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 04:18:46,785 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 04:18:46,785 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 04:18:46,786 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 04:18:46,786 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-19 04:18:46,786 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-19 04:18:46,786 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 04:18:46,786 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 04:18:46,786 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 04:18:46,786 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 04:18:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 04:18:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 04:18:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 04:18:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:18:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 04:18:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 04:18:46,788 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 04:18:46,788 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 04:18:46,788 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 04:18:46,788 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 04:18:46,788 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-19 04:18:46,788 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 04:18:46,788 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 04:18:46,789 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 04:18:46,789 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 04:18:46,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 04:18:46,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 04:18:46,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:18:46,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 04:18:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 04:18:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:18:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 04:18:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 04:18:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:18:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 04:18:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 04:18:46,791 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 04:18:46,791 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 04:18:46,791 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 04:18:46,791 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 04:18:46,791 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 04:18:46,791 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 04:18:46,791 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 04:18:46,792 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:18:46,792 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 04:18:46,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:18:46,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 04:18:46,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:18:47,861 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:18:47,861 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 04:18:47,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:18:47 BoogieIcfgContainer [2020-08-19 04:18:47,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:18:47,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:18:47,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:18:47,872 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:18:47,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:18:45" (1/3) ... [2020-08-19 04:18:47,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d646652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:18:47, skipping insertion in model container [2020-08-19 04:18:47,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:46" (2/3) ... [2020-08-19 04:18:47,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d646652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:18:47, skipping insertion in model container [2020-08-19 04:18:47,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:18:47" (3/3) ... [2020-08-19 04:18:47,875 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product60.cil.c [2020-08-19 04:18:47,886 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:18:47,894 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:18:47,908 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:18:47,933 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:18:47,933 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:18:47,934 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:18:47,934 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:18:47,934 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:18:47,934 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:18:47,935 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:18:47,935 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:18:47,963 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2020-08-19 04:18:47,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 04:18:47,974 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:18:47,975 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:18:47,976 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:18:47,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:18:47,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1771327782, now seen corresponding path program 1 times [2020-08-19 04:18:47,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:18:47,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095685879] [2020-08-19 04:18:47,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:18:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:48,688 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:18:48,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:48,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:18:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:48,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:18:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:48,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:18:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:48,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:18:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:48,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:18:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:48,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:18:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:48,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:48,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 04:18:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:48,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 04:18:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:48,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:18:48,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095685879] [2020-08-19 04:18:48,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:18:48,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:18:48,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170539024] [2020-08-19 04:18:48,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:18:48,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:18:48,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:18:48,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:18:48,827 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 4 states. [2020-08-19 04:18:49,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:18:49,928 INFO L93 Difference]: Finished difference Result 360 states and 456 transitions. [2020-08-19 04:18:49,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 04:18:49,930 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 04:18:49,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:18:49,946 INFO L225 Difference]: With dead ends: 360 [2020-08-19 04:18:49,946 INFO L226 Difference]: Without dead ends: 198 [2020-08-19 04:18:49,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:18:49,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-08-19 04:18:50,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 163. [2020-08-19 04:18:50,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-08-19 04:18:50,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 190 transitions. [2020-08-19 04:18:50,046 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 190 transitions. Word has length 59 [2020-08-19 04:18:50,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:18:50,047 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 190 transitions. [2020-08-19 04:18:50,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:18:50,047 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 190 transitions. [2020-08-19 04:18:50,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 04:18:50,051 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:18:50,051 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:18:50,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:18:50,052 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:18:50,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:18:50,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1467126020, now seen corresponding path program 1 times [2020-08-19 04:18:50,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:18:50,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826070332] [2020-08-19 04:18:50,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:18:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:50,419 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:18:50,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:50,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:18:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:50,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:18:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:50,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:18:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:50,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:18:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:50,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:18:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:50,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 04:18:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:50,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:50,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 04:18:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:50,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 04:18:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:50,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:18:50,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826070332] [2020-08-19 04:18:50,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:18:50,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:18:50,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104643770] [2020-08-19 04:18:50,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:18:50,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:18:50,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:18:50,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:18:50,481 INFO L87 Difference]: Start difference. First operand 163 states and 190 transitions. Second operand 5 states. [2020-08-19 04:18:50,898 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:18:51,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:18:51,974 INFO L93 Difference]: Finished difference Result 295 states and 356 transitions. [2020-08-19 04:18:51,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 04:18:51,976 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-19 04:18:51,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:18:51,981 INFO L225 Difference]: With dead ends: 295 [2020-08-19 04:18:51,981 INFO L226 Difference]: Without dead ends: 188 [2020-08-19 04:18:51,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 04:18:51,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-19 04:18:52,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 154. [2020-08-19 04:18:52,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-08-19 04:18:52,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 178 transitions. [2020-08-19 04:18:52,030 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 178 transitions. Word has length 60 [2020-08-19 04:18:52,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:18:52,031 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 178 transitions. [2020-08-19 04:18:52,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:18:52,031 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 178 transitions. [2020-08-19 04:18:52,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-19 04:18:52,033 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:18:52,034 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:18:52,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:18:52,034 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:18:52,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:18:52,035 INFO L82 PathProgramCache]: Analyzing trace with hash 2049486337, now seen corresponding path program 1 times [2020-08-19 04:18:52,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:18:52,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037174756] [2020-08-19 04:18:52,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:18:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:52,379 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:18:52,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:52,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:18:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:52,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:18:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:52,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:18:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:52,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:18:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:52,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:18:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:52,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:18:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:52,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:52,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 04:18:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:52,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 04:18:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:52,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:18:52,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037174756] [2020-08-19 04:18:52,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:18:52,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:18:52,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109368590] [2020-08-19 04:18:52,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:18:52,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:18:52,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:18:52,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:18:52,514 INFO L87 Difference]: Start difference. First operand 154 states and 178 transitions. Second operand 9 states. [2020-08-19 04:18:52,842 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:18:53,173 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:18:53,406 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:18:53,634 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:18:54,513 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:18:56,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:18:56,640 INFO L93 Difference]: Finished difference Result 515 states and 629 transitions. [2020-08-19 04:18:56,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 04:18:56,641 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-19 04:18:56,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:18:56,647 INFO L225 Difference]: With dead ends: 515 [2020-08-19 04:18:56,647 INFO L226 Difference]: Without dead ends: 389 [2020-08-19 04:18:56,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-19 04:18:56,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-08-19 04:18:56,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 324. [2020-08-19 04:18:56,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-08-19 04:18:56,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 388 transitions. [2020-08-19 04:18:56,721 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 388 transitions. Word has length 65 [2020-08-19 04:18:56,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:18:56,721 INFO L479 AbstractCegarLoop]: Abstraction has 324 states and 388 transitions. [2020-08-19 04:18:56,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:18:56,722 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 388 transitions. [2020-08-19 04:18:56,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 04:18:56,724 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:18:56,725 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:18:56,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 04:18:56,725 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:18:56,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:18:56,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1476281748, now seen corresponding path program 1 times [2020-08-19 04:18:56,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:18:56,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240881935] [2020-08-19 04:18:56,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:18:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:57,061 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:18:57,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:57,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:57,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:18:57,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:57,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:18:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:57,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:18:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:57,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:18:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:57,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:18:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:57,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:18:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:57,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:18:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:57,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:57,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 04:18:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:57,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 04:18:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:57,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 04:18:57,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240881935] [2020-08-19 04:18:57,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:18:57,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:18:57,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286541324] [2020-08-19 04:18:57,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:18:57,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:18:57,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:18:57,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:18:57,156 INFO L87 Difference]: Start difference. First operand 324 states and 388 transitions. Second operand 9 states. [2020-08-19 04:18:57,511 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:18:58,233 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:18:59,193 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:18:59,454 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:18:59,758 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:00,025 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:19:00,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:19:00,886 INFO L93 Difference]: Finished difference Result 819 states and 1054 transitions. [2020-08-19 04:19:00,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 04:19:00,887 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-19 04:19:00,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:19:00,892 INFO L225 Difference]: With dead ends: 819 [2020-08-19 04:19:00,892 INFO L226 Difference]: Without dead ends: 523 [2020-08-19 04:19:00,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 04:19:00,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-08-19 04:19:00,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 455. [2020-08-19 04:19:00,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-08-19 04:19:00,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 543 transitions. [2020-08-19 04:19:00,979 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 543 transitions. Word has length 70 [2020-08-19 04:19:00,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:19:00,980 INFO L479 AbstractCegarLoop]: Abstraction has 455 states and 543 transitions. [2020-08-19 04:19:00,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:19:00,980 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 543 transitions. [2020-08-19 04:19:00,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 04:19:00,985 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:19:00,985 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:19:00,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 04:19:00,985 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:19:00,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:19:00,986 INFO L82 PathProgramCache]: Analyzing trace with hash 340334758, now seen corresponding path program 1 times [2020-08-19 04:19:00,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:19:00,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912490100] [2020-08-19 04:19:00,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:19:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,237 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:19:01,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:19:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:19:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:19:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:19:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:19:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 04:19:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:19:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:19:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 04:19:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 04:19:01,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:19:01,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912490100] [2020-08-19 04:19:01,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:19:01,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:19:01,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477735341] [2020-08-19 04:19:01,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:19:01,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:19:01,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:19:01,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:19:01,403 INFO L87 Difference]: Start difference. First operand 455 states and 543 transitions. Second operand 9 states. [2020-08-19 04:19:02,499 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:02,756 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 04:19:03,006 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:19:03,233 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:19:04,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:19:04,206 INFO L93 Difference]: Finished difference Result 975 states and 1246 transitions. [2020-08-19 04:19:04,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 04:19:04,207 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-08-19 04:19:04,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:19:04,211 INFO L225 Difference]: With dead ends: 975 [2020-08-19 04:19:04,211 INFO L226 Difference]: Without dead ends: 548 [2020-08-19 04:19:04,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 04:19:04,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2020-08-19 04:19:04,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 468. [2020-08-19 04:19:04,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-08-19 04:19:04,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 557 transitions. [2020-08-19 04:19:04,319 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 557 transitions. Word has length 108 [2020-08-19 04:19:04,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:19:04,320 INFO L479 AbstractCegarLoop]: Abstraction has 468 states and 557 transitions. [2020-08-19 04:19:04,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:19:04,320 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 557 transitions. [2020-08-19 04:19:04,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 04:19:04,322 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:19:04,322 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:19:04,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 04:19:04,323 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:19:04,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:19:04,323 INFO L82 PathProgramCache]: Analyzing trace with hash -2026359836, now seen corresponding path program 1 times [2020-08-19 04:19:04,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:19:04,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118878812] [2020-08-19 04:19:04,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:19:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:04,615 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:19:04,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:04,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:19:04,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:04,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:04,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:19:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:04,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:19:04,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:04,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:19:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:04,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:19:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:04,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:04,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:04,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 04:19:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:04,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:04,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:04,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:04,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:04,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:04,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:19:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:04,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:04,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:04,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:04,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:19:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:04,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 04:19:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:04,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 04:19:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:04,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:19:04,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118878812] [2020-08-19 04:19:04,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:19:04,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 04:19:04,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976731055] [2020-08-19 04:19:04,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 04:19:04,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:19:04,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 04:19:04,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 04:19:04,758 INFO L87 Difference]: Start difference. First operand 468 states and 557 transitions. Second operand 11 states. [2020-08-19 04:19:05,227 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:19:05,477 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:19:05,725 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:19:06,545 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:19:06,821 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:19:07,080 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:19:08,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:19:08,171 INFO L93 Difference]: Finished difference Result 998 states and 1270 transitions. [2020-08-19 04:19:08,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 04:19:08,172 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-19 04:19:08,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:19:08,178 INFO L225 Difference]: With dead ends: 998 [2020-08-19 04:19:08,179 INFO L226 Difference]: Without dead ends: 558 [2020-08-19 04:19:08,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 04:19:08,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2020-08-19 04:19:08,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 476. [2020-08-19 04:19:08,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-08-19 04:19:08,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 565 transitions. [2020-08-19 04:19:08,275 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 565 transitions. Word has length 108 [2020-08-19 04:19:08,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:19:08,278 INFO L479 AbstractCegarLoop]: Abstraction has 476 states and 565 transitions. [2020-08-19 04:19:08,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 04:19:08,279 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 565 transitions. [2020-08-19 04:19:08,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 04:19:08,285 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:19:08,286 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:19:08,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 04:19:08,286 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:19:08,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:19:08,287 INFO L82 PathProgramCache]: Analyzing trace with hash 2028067331, now seen corresponding path program 1 times [2020-08-19 04:19:08,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:19:08,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348809702] [2020-08-19 04:19:08,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:19:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:08,612 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:19:08,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:08,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:19:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:08,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:08,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:19:08,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:08,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:19:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:08,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:19:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:08,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:19:08,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:08,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:08,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 04:19:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:08,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:08,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:08,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:08,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:08,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:19:08,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:08,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:08,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:08,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:19:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:08,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 04:19:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:08,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 04:19:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:08,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:19:08,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348809702] [2020-08-19 04:19:08,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:19:08,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 04:19:08,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465810799] [2020-08-19 04:19:08,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 04:19:08,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:19:08,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 04:19:08,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 04:19:08,788 INFO L87 Difference]: Start difference. First operand 476 states and 565 transitions. Second operand 7 states. [2020-08-19 04:19:09,093 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:09,629 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:11,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:19:11,647 INFO L93 Difference]: Finished difference Result 1479 states and 1900 transitions. [2020-08-19 04:19:11,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 04:19:11,647 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-08-19 04:19:11,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:19:11,655 INFO L225 Difference]: With dead ends: 1479 [2020-08-19 04:19:11,655 INFO L226 Difference]: Without dead ends: 1031 [2020-08-19 04:19:11,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-19 04:19:11,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2020-08-19 04:19:11,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 953. [2020-08-19 04:19:11,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2020-08-19 04:19:11,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1151 transitions. [2020-08-19 04:19:11,876 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1151 transitions. Word has length 108 [2020-08-19 04:19:11,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:19:11,877 INFO L479 AbstractCegarLoop]: Abstraction has 953 states and 1151 transitions. [2020-08-19 04:19:11,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 04:19:11,877 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1151 transitions. [2020-08-19 04:19:11,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-19 04:19:11,881 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:19:11,882 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] [2020-08-19 04:19:11,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 04:19:11,882 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:19:11,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:19:11,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1144962269, now seen corresponding path program 1 times [2020-08-19 04:19:11,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:19:11,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884033910] [2020-08-19 04:19:11,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:19:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:12,206 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:19:12,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:12,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:19:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:12,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:12,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:19:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:12,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:19:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:12,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:19:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:12,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:19:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:12,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 04:19:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:12,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:12,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-19 04:19:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:12,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:12,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:12,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:12,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:19:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:12,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:12,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:12,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:19:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:12,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-19 04:19:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:12,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-19 04:19:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:12,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:19:12,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884033910] [2020-08-19 04:19:12,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:19:12,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 04:19:12,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364103504] [2020-08-19 04:19:12,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 04:19:12,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:19:12,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 04:19:12,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-19 04:19:12,462 INFO L87 Difference]: Start difference. First operand 953 states and 1151 transitions. Second operand 12 states. [2020-08-19 04:19:12,874 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:13,560 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:14,305 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:14,628 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:14,886 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:19:15,189 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:15,442 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:17,485 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:17,778 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:19:18,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:19:18,378 INFO L93 Difference]: Finished difference Result 2713 states and 3488 transitions. [2020-08-19 04:19:18,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 04:19:18,379 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-08-19 04:19:18,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:19:18,390 INFO L225 Difference]: With dead ends: 2713 [2020-08-19 04:19:18,391 INFO L226 Difference]: Without dead ends: 1980 [2020-08-19 04:19:18,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-19 04:19:18,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2020-08-19 04:19:18,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1674. [2020-08-19 04:19:18,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1674 states. [2020-08-19 04:19:18,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 2008 transitions. [2020-08-19 04:19:18,677 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 2008 transitions. Word has length 112 [2020-08-19 04:19:18,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:19:18,681 INFO L479 AbstractCegarLoop]: Abstraction has 1674 states and 2008 transitions. [2020-08-19 04:19:18,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 04:19:18,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 2008 transitions. [2020-08-19 04:19:18,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-08-19 04:19:18,686 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:19:18,687 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:19:18,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 04:19:18,687 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:19:18,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:19:18,687 INFO L82 PathProgramCache]: Analyzing trace with hash 164237146, now seen corresponding path program 1 times [2020-08-19 04:19:18,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:19:18,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784104748] [2020-08-19 04:19:18,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:19:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:19,028 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:19:19,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:19,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:19:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:19,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:19,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:19:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:19,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:19:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:19,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:19:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:19,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:19:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:19,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 04:19:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:19,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:19,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:19,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 04:19:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:19,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:19,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:19,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:19,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:19:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:19,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:19,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:19,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:19:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:19,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 04:19:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:19,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:19,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-19 04:19:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:19,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:19,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-19 04:19:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:19,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-19 04:19:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:19,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:19,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:19,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 04:19:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:19,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:19,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-19 04:19:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:19,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-19 04:19:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:19,310 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 04:19:19,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784104748] [2020-08-19 04:19:19,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:19:19,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 04:19:19,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935017847] [2020-08-19 04:19:19,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 04:19:19,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:19:19,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 04:19:19,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-19 04:19:19,312 INFO L87 Difference]: Start difference. First operand 1674 states and 2008 transitions. Second operand 16 states. [2020-08-19 04:19:19,908 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:19:20,250 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 04:19:20,509 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 04:19:20,744 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 04:19:21,437 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:21,720 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:22,064 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 04:19:22,343 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 04:19:23,685 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:24,303 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:24,595 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:24,920 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:19:25,522 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:19:25,914 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:19:26,299 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 04:19:27,025 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:19:27,326 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 04:19:28,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:19:28,158 INFO L93 Difference]: Finished difference Result 3619 states and 4470 transitions. [2020-08-19 04:19:28,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-19 04:19:28,159 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 174 [2020-08-19 04:19:28,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:19:28,172 INFO L225 Difference]: With dead ends: 3619 [2020-08-19 04:19:28,173 INFO L226 Difference]: Without dead ends: 2153 [2020-08-19 04:19:28,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=589, Invalid=2167, Unknown=0, NotChecked=0, Total=2756 [2020-08-19 04:19:28,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2020-08-19 04:19:28,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 1961. [2020-08-19 04:19:28,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1961 states. [2020-08-19 04:19:28,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 2310 transitions. [2020-08-19 04:19:28,571 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 2310 transitions. Word has length 174 [2020-08-19 04:19:28,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:19:28,573 INFO L479 AbstractCegarLoop]: Abstraction has 1961 states and 2310 transitions. [2020-08-19 04:19:28,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 04:19:28,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 2310 transitions. [2020-08-19 04:19:28,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-08-19 04:19:28,584 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:19:28,585 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:19:28,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 04:19:28,585 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:19:28,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:19:28,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1190190750, now seen corresponding path program 1 times [2020-08-19 04:19:28,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:19:28,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391720155] [2020-08-19 04:19:28,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:19:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:28,901 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:19:28,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:28,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:19:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:28,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:28,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:19:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:28,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:19:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:28,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:19:28,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:28,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:19:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:28,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 04:19:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:28,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:28,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:28,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 04:19:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:19:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:19:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 04:19:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 04:19:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 04:19:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 04:19:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 04:19:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-19 04:19:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 04:19:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 04:19:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 04:19:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-08-19 04:19:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-19 04:19:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-19 04:19:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:29,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:19:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:29,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:29,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:19:29,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-08-19 04:19:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-08-19 04:19:29,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,551 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 82 proven. 31 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2020-08-19 04:19:29,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391720155] [2020-08-19 04:19:29,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:19:29,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 04:19:29,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939703691] [2020-08-19 04:19:29,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 04:19:29,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:19:29,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 04:19:29,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-19 04:19:29,556 INFO L87 Difference]: Start difference. First operand 1961 states and 2310 transitions. Second operand 15 states. [2020-08-19 04:19:30,788 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:31,055 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:19:31,285 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:19:31,537 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:19:31,779 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:32,774 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:19:33,323 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-19 04:19:33,799 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-19 04:19:34,286 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:37,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:19:37,328 INFO L93 Difference]: Finished difference Result 5471 states and 6670 transitions. [2020-08-19 04:19:37,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 04:19:37,329 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 311 [2020-08-19 04:19:37,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:19:37,346 INFO L225 Difference]: With dead ends: 5471 [2020-08-19 04:19:37,346 INFO L226 Difference]: Without dead ends: 3307 [2020-08-19 04:19:37,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-19 04:19:37,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3307 states. [2020-08-19 04:19:37,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3307 to 2847. [2020-08-19 04:19:37,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2847 states. [2020-08-19 04:19:37,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2847 states to 2847 states and 3387 transitions. [2020-08-19 04:19:37,922 INFO L78 Accepts]: Start accepts. Automaton has 2847 states and 3387 transitions. Word has length 311 [2020-08-19 04:19:37,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:19:37,922 INFO L479 AbstractCegarLoop]: Abstraction has 2847 states and 3387 transitions. [2020-08-19 04:19:37,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 04:19:37,923 INFO L276 IsEmpty]: Start isEmpty. Operand 2847 states and 3387 transitions. [2020-08-19 04:19:37,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-08-19 04:19:37,936 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:19:37,936 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:19:37,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 04:19:37,937 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:19:37,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:19:37,937 INFO L82 PathProgramCache]: Analyzing trace with hash -547150695, now seen corresponding path program 1 times [2020-08-19 04:19:37,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:19:37,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401348914] [2020-08-19 04:19:37,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:19:37,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,268 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:19:38,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:19:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:19:38,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:19:38,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:19:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:19:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 04:19:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 04:19:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:19:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:19:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 04:19:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 04:19:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 04:19:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 04:19:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:38,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 04:19:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 04:19:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 04:19:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 04:19:38,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 04:19:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 04:19:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-19 04:19:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-19 04:19:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-19 04:19:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:19:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:19:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-08-19 04:19:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-08-19 04:19:38,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:38,746 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 91 proven. 38 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-08-19 04:19:38,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401348914] [2020-08-19 04:19:38,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:19:38,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 04:19:38,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737516570] [2020-08-19 04:19:38,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 04:19:38,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:19:38,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 04:19:38,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-19 04:19:38,749 INFO L87 Difference]: Start difference. First operand 2847 states and 3387 transitions. Second operand 16 states. [2020-08-19 04:19:39,847 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:40,177 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:19:40,435 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:19:40,688 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:19:41,449 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:42,557 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:42,875 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:43,302 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:44,016 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:44,872 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:45,098 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 191