/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product48.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:52:57,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:52:57,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:52:57,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:52:57,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:52:57,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:52:57,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:52:57,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:52:57,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:52:57,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:52:57,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:52:57,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:52:57,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:52:57,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:52:57,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:52:57,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:52:57,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:52:57,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:52:57,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:52:57,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:52:57,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:52:57,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:52:57,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:52:57,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:52:57,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:52:57,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:52:57,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:52:57,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:52:57,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:52:57,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:52:57,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:52:57,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:52:57,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:52:57,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:52:57,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:52:57,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:52:57,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:52:57,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:52:57,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:52:57,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:52:57,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:52:57,638 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 01:52:57,661 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:52:57,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:52:57,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:52:57,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:52:57,663 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:52:57,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:52:57,663 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:52:57,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:52:57,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:52:57,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:52:57,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:52:57,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:52:57,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:52:57,665 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:52:57,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:52:57,665 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:52:57,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:52:57,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:52:57,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:52:57,666 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:52:57,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:52:57,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:52:57,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:52:57,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:52:57,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:52:57,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:52:57,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:52:57,668 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:52:57,668 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:52:57,668 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=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 01:52:57,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:52:57,975 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:52:57,979 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:52:57,980 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:52:57,981 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:52:57,982 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product48.cil.c [2020-08-19 01:52:58,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a38fff92/2bc3a3e80f744c0fab596ed5719eee3f/FLAGc3ecec623 [2020-08-19 01:52:58,669 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:52:58,673 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product48.cil.c [2020-08-19 01:52:58,698 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a38fff92/2bc3a3e80f744c0fab596ed5719eee3f/FLAGc3ecec623 [2020-08-19 01:52:58,871 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a38fff92/2bc3a3e80f744c0fab596ed5719eee3f [2020-08-19 01:52:58,879 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:52:58,881 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:52:58,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:52:58,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:52:58,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:52:58,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:52:58" (1/1) ... [2020-08-19 01:52:58,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27030054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:52:58, skipping insertion in model container [2020-08-19 01:52:58,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:52:58" (1/1) ... [2020-08-19 01:52:58,897 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:52:58,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:52:59,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:52:59,296 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:52:59,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:52:59,600 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:52:59,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:52:59 WrapperNode [2020-08-19 01:52:59,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:52:59,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:52:59,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:52:59,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:52:59,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:52:59" (1/1) ... [2020-08-19 01:52:59,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:52:59" (1/1) ... [2020-08-19 01:52:59,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:52:59" (1/1) ... [2020-08-19 01:52:59,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:52:59" (1/1) ... [2020-08-19 01:52:59,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:52:59" (1/1) ... [2020-08-19 01:52:59,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:52:59" (1/1) ... [2020-08-19 01:52:59,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:52:59" (1/1) ... [2020-08-19 01:52:59,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:52:59,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:52:59,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:52:59,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:52:59,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:52:59" (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 01:52:59,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:52:59,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:52:59,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 01:52:59,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 01:52:59,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 01:52:59,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 01:52:59,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 01:52:59,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 01:52:59,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 01:52:59,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 01:52:59,804 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 01:52:59,804 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 01:52:59,805 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 01:52:59,805 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 01:52:59,805 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 01:52:59,806 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-19 01:52:59,806 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 01:52:59,807 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 01:52:59,807 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 01:52:59,807 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 01:52:59,807 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 01:52:59,807 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 01:52:59,807 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 01:52:59,807 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 01:52:59,808 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 01:52:59,808 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 01:52:59,809 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 01:52:59,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 01:52:59,809 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 01:52:59,809 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 01:52:59,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 01:52:59,809 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 01:52:59,810 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 01:52:59,810 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 01:52:59,810 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 01:52:59,810 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:52:59,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-19 01:52:59,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-19 01:52:59,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-19 01:52:59,811 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 01:52:59,811 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 01:52:59,811 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 01:52:59,811 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 01:52:59,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:52:59,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:52:59,812 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 01:52:59,812 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 01:52:59,812 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 01:52:59,812 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 01:52:59,812 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 01:52:59,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 01:52:59,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 01:52:59,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:52:59,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 01:52:59,813 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 01:52:59,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:52:59,814 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 01:52:59,814 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 01:52:59,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:52:59,815 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 01:52:59,815 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 01:52:59,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:52:59,815 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 01:52:59,815 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 01:52:59,815 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 01:52:59,815 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 01:52:59,816 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 01:52:59,816 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 01:52:59,816 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 01:52:59,816 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 01:52:59,816 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 01:52:59,817 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 01:52:59,817 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 01:52:59,818 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 01:52:59,818 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 01:52:59,818 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 01:52:59,819 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 01:52:59,819 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 01:52:59,819 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 01:52:59,819 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-19 01:52:59,820 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-19 01:52:59,820 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 01:52:59,821 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 01:52:59,821 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 01:52:59,821 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 01:52:59,821 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 01:52:59,821 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-19 01:52:59,821 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 01:52:59,821 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 01:52:59,822 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 01:52:59,822 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-19 01:52:59,822 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 01:52:59,822 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 01:52:59,822 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 01:52:59,822 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 01:52:59,822 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:52:59,823 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 01:52:59,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:52:59,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 01:52:59,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:53:00,987 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:53:00,987 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 01:53:00,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:53:00 BoogieIcfgContainer [2020-08-19 01:53:00,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:53:01,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:53:01,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:53:01,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:53:01,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:52:58" (1/3) ... [2020-08-19 01:53:01,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40bd1651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:53:01, skipping insertion in model container [2020-08-19 01:53:01,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:52:59" (2/3) ... [2020-08-19 01:53:01,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40bd1651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:53:01, skipping insertion in model container [2020-08-19 01:53:01,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:53:00" (3/3) ... [2020-08-19 01:53:01,010 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product48.cil.c [2020-08-19 01:53:01,020 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:53:01,033 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:53:01,049 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:53:01,083 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:53:01,084 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:53:01,085 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:53:01,085 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:53:01,086 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:53:01,086 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:53:01,086 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:53:01,087 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:53:01,111 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2020-08-19 01:53:01,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 01:53:01,124 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:01,125 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 01:53:01,125 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:01,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:01,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1391539258, now seen corresponding path program 1 times [2020-08-19 01:53:01,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:01,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678747850] [2020-08-19 01:53:01,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:01,795 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:01,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:01,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:01,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:01,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:01,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:01,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:01,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:53:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:01,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:01,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 01:53:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:01,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 01:53:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:01,901 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 01:53:01,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678747850] [2020-08-19 01:53:01,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:01,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:53:01,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982491781] [2020-08-19 01:53:01,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:53:01,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:01,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:53:01,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:53:01,932 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 4 states. [2020-08-19 01:53:03,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:03,189 INFO L93 Difference]: Finished difference Result 340 states and 436 transitions. [2020-08-19 01:53:03,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 01:53:03,191 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 01:53:03,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:03,207 INFO L225 Difference]: With dead ends: 340 [2020-08-19 01:53:03,207 INFO L226 Difference]: Without dead ends: 188 [2020-08-19 01:53:03,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:53:03,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-19 01:53:03,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 153. [2020-08-19 01:53:03,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-19 01:53:03,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 180 transitions. [2020-08-19 01:53:03,316 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 180 transitions. Word has length 59 [2020-08-19 01:53:03,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:03,318 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 180 transitions. [2020-08-19 01:53:03,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:53:03,319 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 180 transitions. [2020-08-19 01:53:03,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 01:53:03,327 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:03,328 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 01:53:03,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:53:03,328 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:03,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:03,329 INFO L82 PathProgramCache]: Analyzing trace with hash 404948371, now seen corresponding path program 1 times [2020-08-19 01:53:03,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:03,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066247735] [2020-08-19 01:53:03,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:03,737 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:03,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:03,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:03,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:03,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:03,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:03,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:03,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:53:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:03,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:03,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 01:53:03,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:03,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 01:53:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:03,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:53:03,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066247735] [2020-08-19 01:53:03,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:03,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:53:03,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409556145] [2020-08-19 01:53:03,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:53:03,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:03,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:53:03,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:53:03,797 INFO L87 Difference]: Start difference. First operand 153 states and 180 transitions. Second operand 5 states. [2020-08-19 01:53:04,287 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:05,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:05,311 INFO L93 Difference]: Finished difference Result 275 states and 336 transitions. [2020-08-19 01:53:05,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 01:53:05,313 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-19 01:53:05,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:05,316 INFO L225 Difference]: With dead ends: 275 [2020-08-19 01:53:05,316 INFO L226 Difference]: Without dead ends: 178 [2020-08-19 01:53:05,318 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 01:53:05,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-19 01:53:05,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 144. [2020-08-19 01:53:05,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-19 01:53:05,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2020-08-19 01:53:05,357 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 60 [2020-08-19 01:53:05,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:05,357 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2020-08-19 01:53:05,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:53:05,358 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2020-08-19 01:53:05,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-19 01:53:05,360 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:05,360 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 01:53:05,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:53:05,361 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:05,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:05,361 INFO L82 PathProgramCache]: Analyzing trace with hash 539093391, now seen corresponding path program 1 times [2020-08-19 01:53:05,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:05,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382533203] [2020-08-19 01:53:05,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:05,683 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:05,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:05,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:05,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:05,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:05,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:05,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:05,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:05,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:53:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:05,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:05,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 01:53:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:05,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 01:53:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:05,770 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 01:53:05,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382533203] [2020-08-19 01:53:05,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:05,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:53:05,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923625804] [2020-08-19 01:53:05,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:53:05,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:05,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:53:05,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:53:05,773 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand 9 states. [2020-08-19 01:53:06,197 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:06,493 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:06,750 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:07,000 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:07,946 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:09,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:09,969 INFO L93 Difference]: Finished difference Result 485 states and 599 transitions. [2020-08-19 01:53:09,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 01:53:09,970 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-19 01:53:09,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:09,976 INFO L225 Difference]: With dead ends: 485 [2020-08-19 01:53:09,976 INFO L226 Difference]: Without dead ends: 369 [2020-08-19 01:53:09,978 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 01:53:09,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2020-08-19 01:53:10,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 304. [2020-08-19 01:53:10,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-08-19 01:53:10,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 368 transitions. [2020-08-19 01:53:10,055 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 368 transitions. Word has length 65 [2020-08-19 01:53:10,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:10,056 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 368 transitions. [2020-08-19 01:53:10,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:53:10,056 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 368 transitions. [2020-08-19 01:53:10,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 01:53:10,059 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:10,059 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 01:53:10,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:53:10,060 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:10,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:10,060 INFO L82 PathProgramCache]: Analyzing trace with hash -652418830, now seen corresponding path program 1 times [2020-08-19 01:53:10,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:10,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469432112] [2020-08-19 01:53:10,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:10,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:10,340 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:10,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:10,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:10,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:10,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:10,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:10,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:10,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:53:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:10,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:53:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:10,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:10,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 01:53:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:10,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 01:53:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:10,462 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 01:53:10,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469432112] [2020-08-19 01:53:10,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:10,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:53:10,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439770632] [2020-08-19 01:53:10,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:53:10,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:10,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:53:10,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:53:10,465 INFO L87 Difference]: Start difference. First operand 304 states and 368 transitions. Second operand 9 states. [2020-08-19 01:53:10,866 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:11,579 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:12,494 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:12,718 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:13,025 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:13,296 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:14,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:14,149 INFO L93 Difference]: Finished difference Result 795 states and 1028 transitions. [2020-08-19 01:53:14,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 01:53:14,150 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-19 01:53:14,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:14,157 INFO L225 Difference]: With dead ends: 795 [2020-08-19 01:53:14,157 INFO L226 Difference]: Without dead ends: 519 [2020-08-19 01:53:14,160 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 01:53:14,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2020-08-19 01:53:14,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 451. [2020-08-19 01:53:14,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2020-08-19 01:53:14,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 537 transitions. [2020-08-19 01:53:14,265 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 537 transitions. Word has length 70 [2020-08-19 01:53:14,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:14,266 INFO L479 AbstractCegarLoop]: Abstraction has 451 states and 537 transitions. [2020-08-19 01:53:14,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:53:14,266 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 537 transitions. [2020-08-19 01:53:14,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 01:53:14,270 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:14,270 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 01:53:14,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:53:14,271 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:14,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:14,271 INFO L82 PathProgramCache]: Analyzing trace with hash -918633805, now seen corresponding path program 1 times [2020-08-19 01:53:14,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:14,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802734361] [2020-08-19 01:53:14,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:14,536 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:14,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:14,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:14,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:14,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:14,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:14,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:14,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:14,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:53:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:14,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:14,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 01:53:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:14,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:14,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:14,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:14,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:53:14,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:14,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:14,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:14,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:14,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 01:53:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:14,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 01:53:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:14,709 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 01:53:14,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802734361] [2020-08-19 01:53:14,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:14,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:53:14,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054393348] [2020-08-19 01:53:14,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:53:14,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:14,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:53:14,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:53:14,712 INFO L87 Difference]: Start difference. First operand 451 states and 537 transitions. Second operand 9 states. [2020-08-19 01:53:15,105 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:16,189 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:16,425 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:53:16,673 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:16,927 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:18,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:18,173 INFO L93 Difference]: Finished difference Result 1362 states and 1793 transitions. [2020-08-19 01:53:18,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 01:53:18,174 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-08-19 01:53:18,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:18,181 INFO L225 Difference]: With dead ends: 1362 [2020-08-19 01:53:18,181 INFO L226 Difference]: Without dead ends: 939 [2020-08-19 01:53:18,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-19 01:53:18,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2020-08-19 01:53:18,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 811. [2020-08-19 01:53:18,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 811 states. [2020-08-19 01:53:18,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 969 transitions. [2020-08-19 01:53:18,374 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 969 transitions. Word has length 108 [2020-08-19 01:53:18,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:18,375 INFO L479 AbstractCegarLoop]: Abstraction has 811 states and 969 transitions. [2020-08-19 01:53:18,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:53:18,375 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 969 transitions. [2020-08-19 01:53:18,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 01:53:18,378 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:18,379 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 01:53:18,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:53:18,379 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:18,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:18,380 INFO L82 PathProgramCache]: Analyzing trace with hash -678093676, now seen corresponding path program 1 times [2020-08-19 01:53:18,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:18,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641882255] [2020-08-19 01:53:18,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:18,675 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:18,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:18,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:18,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:18,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:18,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:18,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:18,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:18,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:53:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:18,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:18,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 01:53:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:18,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:18,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:18,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:18,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:53:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:18,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:18,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:18,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:18,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 01:53:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:18,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 01:53:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:18,874 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 01:53:18,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641882255] [2020-08-19 01:53:18,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:18,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:53:18,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167451954] [2020-08-19 01:53:18,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:53:18,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:18,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:53:18,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:53:18,878 INFO L87 Difference]: Start difference. First operand 811 states and 969 transitions. Second operand 9 states. [2020-08-19 01:53:19,992 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:20,203 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:53:20,438 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:20,708 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:21,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:21,805 INFO L93 Difference]: Finished difference Result 1729 states and 2208 transitions. [2020-08-19 01:53:21,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 01:53:21,806 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-08-19 01:53:21,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:21,815 INFO L225 Difference]: With dead ends: 1729 [2020-08-19 01:53:21,816 INFO L226 Difference]: Without dead ends: 946 [2020-08-19 01:53:21,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:53:21,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2020-08-19 01:53:22,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 831. [2020-08-19 01:53:22,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 831 states. [2020-08-19 01:53:22,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 989 transitions. [2020-08-19 01:53:22,017 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 989 transitions. Word has length 108 [2020-08-19 01:53:22,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:22,019 INFO L479 AbstractCegarLoop]: Abstraction has 831 states and 989 transitions. [2020-08-19 01:53:22,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:53:22,019 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 989 transitions. [2020-08-19 01:53:22,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 01:53:22,023 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:22,024 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 01:53:22,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:53:22,025 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:22,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:22,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1250179026, now seen corresponding path program 1 times [2020-08-19 01:53:22,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:22,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054476585] [2020-08-19 01:53:22,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,297 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:22,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:22,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:53:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 01:53:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:53:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 01:53:22,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 01:53:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,449 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 01:53:22,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054476585] [2020-08-19 01:53:22,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:22,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 01:53:22,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062117872] [2020-08-19 01:53:22,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 01:53:22,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:22,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 01:53:22,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:53:22,457 INFO L87 Difference]: Start difference. First operand 831 states and 989 transitions. Second operand 11 states. [2020-08-19 01:53:23,004 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:23,272 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:23,522 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:24,368 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:24,653 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:24,927 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:25,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:25,907 INFO L93 Difference]: Finished difference Result 1544 states and 1934 transitions. [2020-08-19 01:53:25,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 01:53:25,913 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-19 01:53:25,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:25,918 INFO L225 Difference]: With dead ends: 1544 [2020-08-19 01:53:25,919 INFO L226 Difference]: Without dead ends: 741 [2020-08-19 01:53:25,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 01:53:25,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-08-19 01:53:26,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-08-19 01:53:26,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-08-19 01:53:26,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 775 transitions. [2020-08-19 01:53:26,046 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 775 transitions. Word has length 108 [2020-08-19 01:53:26,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:26,046 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 775 transitions. [2020-08-19 01:53:26,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 01:53:26,047 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 775 transitions. [2020-08-19 01:53:26,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-19 01:53:26,051 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:26,051 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:26,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:53:26,051 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:26,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:26,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1890897259, now seen corresponding path program 1 times [2020-08-19 01:53:26,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:26,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053845594] [2020-08-19 01:53:26,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:26,450 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:26,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:26,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:26,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:26,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:26,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:26,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:26,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:53:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:26,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 01:53:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:26,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:26,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-19 01:53:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:26,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:26,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:26,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:26,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:53:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:26,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:26,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:26,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:26,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-19 01:53:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:26,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-19 01:53:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:26,642 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 01:53:26,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053845594] [2020-08-19 01:53:26,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:26,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 01:53:26,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338166814] [2020-08-19 01:53:26,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:53:26,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:26,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:53:26,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:53:26,644 INFO L87 Difference]: Start difference. First operand 664 states and 775 transitions. Second operand 12 states. [2020-08-19 01:53:27,217 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:27,894 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:28,630 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:28,964 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:29,238 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:53:29,561 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:29,845 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:31,996 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:32,276 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:32,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:32,929 INFO L93 Difference]: Finished difference Result 1955 states and 2469 transitions. [2020-08-19 01:53:32,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 01:53:32,930 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-08-19 01:53:32,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:32,941 INFO L225 Difference]: With dead ends: 1955 [2020-08-19 01:53:32,941 INFO L226 Difference]: Without dead ends: 1505 [2020-08-19 01:53:32,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-19 01:53:32,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2020-08-19 01:53:33,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1367. [2020-08-19 01:53:33,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1367 states. [2020-08-19 01:53:33,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 1597 transitions. [2020-08-19 01:53:33,205 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 1597 transitions. Word has length 112 [2020-08-19 01:53:33,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:33,208 INFO L479 AbstractCegarLoop]: Abstraction has 1367 states and 1597 transitions. [2020-08-19 01:53:33,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:53:33,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 1597 transitions. [2020-08-19 01:53:33,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-08-19 01:53:33,213 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:33,213 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:33,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 01:53:33,214 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:33,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:33,214 INFO L82 PathProgramCache]: Analyzing trace with hash 828062466, now seen corresponding path program 1 times [2020-08-19 01:53:33,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:33,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895654630] [2020-08-19 01:53:33,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,531 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:33,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:33,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:53:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 01:53:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:53:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:33,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:53:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 01:53:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-19 01:53:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-19 01:53:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-19 01:53:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 01:53:33,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 01:53:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-19 01:53:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:34,021 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-08-19 01:53:34,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895654630] [2020-08-19 01:53:34,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:53:34,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 01:53:34,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137181943] [2020-08-19 01:53:34,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 01:53:34,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:34,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 01:53:34,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-19 01:53:34,025 INFO L87 Difference]: Start difference. First operand 1367 states and 1597 transitions. Second operand 16 states. [2020-08-19 01:53:34,772 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:53:35,111 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 01:53:35,368 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 01:53:35,620 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 01:53:36,316 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:36,620 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:36,970 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:53:37,253 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:53:38,614 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:39,256 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:39,535 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:39,842 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:53:40,381 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:40,767 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:53:41,145 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:53:41,923 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:53:42,230 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:53:43,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:43,027 INFO L93 Difference]: Finished difference Result 3011 states and 3644 transitions. [2020-08-19 01:53:43,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-19 01:53:43,028 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 172 [2020-08-19 01:53:43,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:43,040 INFO L225 Difference]: With dead ends: 3011 [2020-08-19 01:53:43,040 INFO L226 Difference]: Without dead ends: 1852 [2020-08-19 01:53:43,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=605, Invalid=2257, Unknown=0, NotChecked=0, Total=2862 [2020-08-19 01:53:43,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2020-08-19 01:53:43,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1641. [2020-08-19 01:53:43,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1641 states. [2020-08-19 01:53:43,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 1901 transitions. [2020-08-19 01:53:43,333 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 1901 transitions. Word has length 172 [2020-08-19 01:53:43,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:43,334 INFO L479 AbstractCegarLoop]: Abstraction has 1641 states and 1901 transitions. [2020-08-19 01:53:43,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 01:53:43,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 1901 transitions. [2020-08-19 01:53:43,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-08-19 01:53:43,344 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:43,344 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:53:43,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 01:53:43,345 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:43,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:43,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1205235534, now seen corresponding path program 1 times [2020-08-19 01:53:43,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:43,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225630116] [2020-08-19 01:53:43,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,751 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:43,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:43,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:43,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:53:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 01:53:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:53:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:53:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 01:53:43,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 01:53:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:53:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 01:53:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:43,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:53:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-08-19 01:53:44,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:53:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:44,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 01:53:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 01:53:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-19 01:53:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-19 01:53:44,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:53:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-19 01:53:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-08-19 01:53:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-08-19 01:53:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:44,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:53:44,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-08-19 01:53:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-08-19 01:53:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,347 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 107 proven. 50 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2020-08-19 01:53:44,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225630116] [2020-08-19 01:53:44,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:53:44,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-19 01:53:44,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159853411] [2020-08-19 01:53:44,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-19 01:53:44,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:44,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-19 01:53:44,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-08-19 01:53:44,350 INFO L87 Difference]: Start difference. First operand 1641 states and 1901 transitions. Second operand 17 states. [2020-08-19 01:53:46,275 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:46,556 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:53:46,830 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:47,081 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:53:47,330 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:48,236 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:53:48,742 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-19 01:53:49,223 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-19 01:53:49,734 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:53,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:53,067 INFO L93 Difference]: Finished difference Result 4937 states and 6137 transitions. [2020-08-19 01:53:53,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-19 01:53:53,068 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 343 [2020-08-19 01:53:53,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:53,086 INFO L225 Difference]: With dead ends: 4937 [2020-08-19 01:53:53,086 INFO L226 Difference]: Without dead ends: 3077 [2020-08-19 01:53:53,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=595, Invalid=2597, Unknown=0, NotChecked=0, Total=3192 [2020-08-19 01:53:53,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2020-08-19 01:53:53,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 2419. [2020-08-19 01:53:53,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2419 states. [2020-08-19 01:53:53,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2419 states to 2419 states and 2813 transitions. [2020-08-19 01:53:53,602 INFO L78 Accepts]: Start accepts. Automaton has 2419 states and 2813 transitions. Word has length 343 [2020-08-19 01:53:53,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:53,603 INFO L479 AbstractCegarLoop]: Abstraction has 2419 states and 2813 transitions. [2020-08-19 01:53:53,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-19 01:53:53,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2419 states and 2813 transitions. [2020-08-19 01:53:53,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-08-19 01:53:53,614 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:53,615 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:53,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 01:53:53,615 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:53,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:53,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1846391666, now seen corresponding path program 1 times [2020-08-19 01:53:53,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:53,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652885084] [2020-08-19 01:53:53,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:53,971 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:53,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:54,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:53:54,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 01:53:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:53:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:53:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:54,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:54,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 01:53:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 01:53:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:54,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:54,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:53:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:54,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 01:53:54,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:53:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 01:53:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-08-19 01:53:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:53:54,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 01:53:54,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 01:53:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-19 01:53:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-19 01:53:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:53:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:54,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-19 01:53:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-08-19 01:53:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,433 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 90 proven. 38 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2020-08-19 01:53:54,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652885084] [2020-08-19 01:53:54,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:53:54,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 01:53:54,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201357133] [2020-08-19 01:53:54,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 01:53:54,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:54,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 01:53:54,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-19 01:53:54,436 INFO L87 Difference]: Start difference. First operand 2419 states and 2813 transitions. Second operand 16 states. [2020-08-19 01:53:55,207 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:55,518 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:53:55,773 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:53:56,014 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192