/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:39:07,775 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:39:07,777 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:39:07,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:39:07,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:39:07,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:39:07,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:39:07,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:39:07,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:39:07,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:39:07,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:39:07,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:39:07,811 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:39:07,812 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:39:07,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:39:07,814 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:39:07,815 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:39:07,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:39:07,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:39:07,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:39:07,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:39:07,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:39:07,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:39:07,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:39:07,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:39:07,827 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:39:07,827 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:39:07,828 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:39:07,829 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:39:07,830 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:39:07,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:39:07,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:39:07,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:39:07,832 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:39:07,833 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:39:07,833 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:39:07,834 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:39:07,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:39:07,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:39:07,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:39:07,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:39:07,837 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 06:39:07,860 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:39:07,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:39:07,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:39:07,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:39:07,862 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:39:07,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:39:07,862 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:39:07,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:39:07,863 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:39:07,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:39:07,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:39:07,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:39:07,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:39:07,864 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:39:07,864 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:39:07,864 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:39:07,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:39:07,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:39:07,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:39:07,865 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:39:07,865 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:39:07,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:39:07,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:39:07,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:39:07,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:39:07,866 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:39:07,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:39:07,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:39:07,867 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:39:07,867 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; [2020-08-19 06:39:08,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:39:08,238 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:39:08,242 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:39:08,244 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:39:08,245 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:39:08,246 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-08-19 06:39:08,323 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca6b316cd/d11255805de741e5a88e1da72dd1e7e7/FLAGf457a61c8 [2020-08-19 06:39:08,944 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:39:08,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-08-19 06:39:08,962 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca6b316cd/d11255805de741e5a88e1da72dd1e7e7/FLAGf457a61c8 [2020-08-19 06:39:09,214 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca6b316cd/d11255805de741e5a88e1da72dd1e7e7 [2020-08-19 06:39:09,228 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:39:09,229 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:39:09,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:39:09,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:39:09,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:39:09,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:39:09" (1/1) ... [2020-08-19 06:39:09,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a35e781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:09, skipping insertion in model container [2020-08-19 06:39:09,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:39:09" (1/1) ... [2020-08-19 06:39:09,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:39:09,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:39:09,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:39:09,746 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:39:09,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:39:09,871 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:39:09,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:09 WrapperNode [2020-08-19 06:39:09,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:39:09,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:39:09,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:39:09,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:39:09,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:09" (1/1) ... [2020-08-19 06:39:09,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:09" (1/1) ... [2020-08-19 06:39:09,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:09" (1/1) ... [2020-08-19 06:39:09,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:09" (1/1) ... [2020-08-19 06:39:09,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:09" (1/1) ... [2020-08-19 06:39:09,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:09" (1/1) ... [2020-08-19 06:39:09,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:09" (1/1) ... [2020-08-19 06:39:09,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:39:09,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:39:09,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:39:09,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:39:09,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:09" (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 06:39:10,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:39:10,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:39:10,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 06:39:10,031 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 06:39:10,032 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 06:39:10,032 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 06:39:10,033 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 06:39:10,033 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 06:39:10,033 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 06:39:10,034 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 06:39:10,034 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 06:39:10,034 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 06:39:10,034 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 06:39:10,034 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 06:39:10,035 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 06:39:10,036 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:39:10,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 06:39:10,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 06:39:10,037 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 06:39:10,037 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 06:39:10,037 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 06:39:10,038 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 06:39:10,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 06:39:10,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 06:39:10,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 06:39:10,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 06:39:10,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 06:39:10,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 06:39:10,039 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 06:39:10,039 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 06:39:10,039 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 06:39:10,040 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 06:39:10,040 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 06:39:10,040 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 06:39:10,040 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 06:39:10,040 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 06:39:10,041 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 06:39:10,041 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 06:39:10,041 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 06:39:10,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 06:39:10,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 06:39:10,042 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 06:39:10,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:39:10,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:39:10,042 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 06:39:10,043 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 06:39:10,043 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 06:39:10,043 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 06:39:10,043 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 06:39:10,043 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 06:39:10,043 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 06:39:10,043 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 06:39:10,044 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 06:39:10,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 06:39:10,044 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 06:39:10,044 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 06:39:10,044 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 06:39:10,044 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 06:39:10,045 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 06:39:10,045 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 06:39:10,045 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 06:39:10,045 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 06:39:10,045 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 06:39:10,045 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 06:39:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:39:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 06:39:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 06:39:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 06:39:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 06:39:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 06:39:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 06:39:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 06:39:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 06:39:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 06:39:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 06:39:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 06:39:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 06:39:10,048 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 06:39:10,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 06:39:10,048 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 06:39:10,048 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 06:39:10,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 06:39:10,048 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 06:39:10,048 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 06:39:10,049 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 06:39:10,049 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 06:39:10,049 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 06:39:10,049 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 06:39:10,049 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 06:39:10,049 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 06:39:10,050 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 06:39:10,050 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 06:39:10,050 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 06:39:10,050 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 06:39:10,050 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 06:39:10,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:39:10,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 06:39:10,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:39:11,176 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:39:11,177 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 06:39:11,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:39:11 BoogieIcfgContainer [2020-08-19 06:39:11,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:39:11,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:39:11,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:39:11,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:39:11,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:39:09" (1/3) ... [2020-08-19 06:39:11,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400bef1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:39:11, skipping insertion in model container [2020-08-19 06:39:11,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:09" (2/3) ... [2020-08-19 06:39:11,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400bef1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:39:11, skipping insertion in model container [2020-08-19 06:39:11,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:39:11" (3/3) ... [2020-08-19 06:39:11,193 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product54.cil.c [2020-08-19 06:39:11,204 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:39:11,213 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:39:11,227 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:39:11,253 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:39:11,253 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:39:11,253 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:39:11,253 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:39:11,254 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:39:11,254 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:39:11,254 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:39:11,254 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:39:11,276 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2020-08-19 06:39:11,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 06:39:11,288 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:11,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:39:11,289 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:11,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:11,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1727770094, now seen corresponding path program 1 times [2020-08-19 06:39:11,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:11,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352409765] [2020-08-19 06:39:11,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:12,048 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:39:12,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:12,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:12,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:39:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:12,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:39:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:12,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:39:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:12,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 06:39:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:12,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:39:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:12,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:39:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:12,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:39:12,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352409765] [2020-08-19 06:39:12,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:39:12,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:39:12,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709505409] [2020-08-19 06:39:12,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:39:12,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:12,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:39:12,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:39:12,222 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 3 states. [2020-08-19 06:39:13,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:13,455 INFO L93 Difference]: Finished difference Result 350 states and 455 transitions. [2020-08-19 06:39:13,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:39:13,457 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-19 06:39:13,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:13,472 INFO L225 Difference]: With dead ends: 350 [2020-08-19 06:39:13,473 INFO L226 Difference]: Without dead ends: 188 [2020-08-19 06:39:13,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:39:13,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-19 06:39:13,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 153. [2020-08-19 06:39:13,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-19 06:39:13,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 181 transitions. [2020-08-19 06:39:13,617 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 181 transitions. Word has length 52 [2020-08-19 06:39:13,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:13,617 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 181 transitions. [2020-08-19 06:39:13,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:39:13,618 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 181 transitions. [2020-08-19 06:39:13,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 06:39:13,630 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:13,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:39:13,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:39:13,631 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:13,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:13,631 INFO L82 PathProgramCache]: Analyzing trace with hash -23295260, now seen corresponding path program 1 times [2020-08-19 06:39:13,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:13,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894861458] [2020-08-19 06:39:13,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:14,016 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:39:14,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:14,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:14,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:39:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:14,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:39:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:14,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:39:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:14,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 06:39:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:14,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 06:39:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:14,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 06:39:14,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:14,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:39:14,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894861458] [2020-08-19 06:39:14,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:39:14,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:39:14,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989191586] [2020-08-19 06:39:14,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:39:14,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:14,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:39:14,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:39:14,063 INFO L87 Difference]: Start difference. First operand 153 states and 181 transitions. Second operand 4 states. [2020-08-19 06:39:14,461 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:15,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:15,449 INFO L93 Difference]: Finished difference Result 279 states and 342 transitions. [2020-08-19 06:39:15,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:39:15,449 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-19 06:39:15,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:15,455 INFO L225 Difference]: With dead ends: 279 [2020-08-19 06:39:15,456 INFO L226 Difference]: Without dead ends: 172 [2020-08-19 06:39:15,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:39:15,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-19 06:39:15,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2020-08-19 06:39:15,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-19 06:39:15,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 169 transitions. [2020-08-19 06:39:15,538 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 169 transitions. Word has length 53 [2020-08-19 06:39:15,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:15,539 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 169 transitions. [2020-08-19 06:39:15,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:39:15,539 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 169 transitions. [2020-08-19 06:39:15,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-19 06:39:15,546 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:15,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:39:15,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:39:15,547 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:15,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:15,547 INFO L82 PathProgramCache]: Analyzing trace with hash 646991369, now seen corresponding path program 1 times [2020-08-19 06:39:15,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:15,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683962459] [2020-08-19 06:39:15,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:15,923 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:39:15,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:15,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:15,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:39:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:15,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:39:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:16,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:39:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:16,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:39:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:16,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:39:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:16,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 06:39:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:16,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:39:16,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683962459] [2020-08-19 06:39:16,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:39:16,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:39:16,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786453824] [2020-08-19 06:39:16,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:39:16,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:16,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:39:16,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:39:16,022 INFO L87 Difference]: Start difference. First operand 144 states and 169 transitions. Second operand 8 states. [2020-08-19 06:39:16,376 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:39:16,681 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:16,939 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:17,167 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:18,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:18,520 INFO L93 Difference]: Finished difference Result 292 states and 360 transitions. [2020-08-19 06:39:18,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 06:39:18,522 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-19 06:39:18,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:18,527 INFO L225 Difference]: With dead ends: 292 [2020-08-19 06:39:18,527 INFO L226 Difference]: Without dead ends: 172 [2020-08-19 06:39:18,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:39:18,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-19 06:39:18,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2020-08-19 06:39:18,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-19 06:39:18,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2020-08-19 06:39:18,578 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 58 [2020-08-19 06:39:18,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:18,579 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2020-08-19 06:39:18,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:39:18,579 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2020-08-19 06:39:18,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-08-19 06:39:18,581 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:18,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:39:18,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:39:18,581 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:18,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:18,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1077665999, now seen corresponding path program 1 times [2020-08-19 06:39:18,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:18,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823420449] [2020-08-19 06:39:18,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:18,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:18,837 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:39:18,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:18,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:18,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:39:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:18,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:39:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:18,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:39:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:18,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 06:39:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:18,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:18,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:18,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:18,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 06:39:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:18,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-19 06:39:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:18,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-19 06:39:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:18,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:39:18,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823420449] [2020-08-19 06:39:18,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:39:18,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 06:39:18,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469432112] [2020-08-19 06:39:18,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 06:39:18,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:18,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 06:39:18,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:39:18,946 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand 6 states. [2020-08-19 06:39:19,376 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:39:20,596 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:21,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:21,445 INFO L93 Difference]: Finished difference Result 407 states and 503 transitions. [2020-08-19 06:39:21,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 06:39:21,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-08-19 06:39:21,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:21,449 INFO L225 Difference]: With dead ends: 407 [2020-08-19 06:39:21,449 INFO L226 Difference]: Without dead ends: 287 [2020-08-19 06:39:21,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-19 06:39:21,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-08-19 06:39:21,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 244. [2020-08-19 06:39:21,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-19 06:39:21,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 277 transitions. [2020-08-19 06:39:21,503 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 277 transitions. Word has length 76 [2020-08-19 06:39:21,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:21,503 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 277 transitions. [2020-08-19 06:39:21,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 06:39:21,504 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 277 transitions. [2020-08-19 06:39:21,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-19 06:39:21,505 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:21,506 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:39:21,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:39:21,506 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:21,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:21,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1489636928, now seen corresponding path program 1 times [2020-08-19 06:39:21,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:21,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049877160] [2020-08-19 06:39:21,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:21,835 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:39:21,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:21,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:21,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:39:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:21,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:39:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:21,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:39:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:21,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 06:39:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:21,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:21,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:21,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:21,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:21,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:39:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:21,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 06:39:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:21,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 06:39:21,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:21,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 06:39:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:22,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:39:22,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049877160] [2020-08-19 06:39:22,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:39:22,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:39:22,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678954323] [2020-08-19 06:39:22,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:39:22,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:22,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:39:22,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:39:22,020 INFO L87 Difference]: Start difference. First operand 244 states and 277 transitions. Second operand 8 states. [2020-08-19 06:39:22,393 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:39:23,760 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:24,040 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:24,295 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:24,529 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:39:25,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:25,466 INFO L93 Difference]: Finished difference Result 641 states and 791 transitions. [2020-08-19 06:39:25,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 06:39:25,467 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-08-19 06:39:25,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:25,470 INFO L225 Difference]: With dead ends: 641 [2020-08-19 06:39:25,470 INFO L226 Difference]: Without dead ends: 421 [2020-08-19 06:39:25,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-19 06:39:25,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-08-19 06:39:25,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 378. [2020-08-19 06:39:25,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-08-19 06:39:25,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 436 transitions. [2020-08-19 06:39:25,578 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 436 transitions. Word has length 90 [2020-08-19 06:39:25,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:25,578 INFO L479 AbstractCegarLoop]: Abstraction has 378 states and 436 transitions. [2020-08-19 06:39:25,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:39:25,579 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 436 transitions. [2020-08-19 06:39:25,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-19 06:39:25,580 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:25,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:39:25,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 06:39:25,581 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:25,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:25,581 INFO L82 PathProgramCache]: Analyzing trace with hash -467189990, now seen corresponding path program 1 times [2020-08-19 06:39:25,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:25,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2757736] [2020-08-19 06:39:25,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,854 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:39:25,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:39:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:39:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:39:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 06:39:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 06:39:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:39:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 06:39:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 06:39:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-19 06:39:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:39:25,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2757736] [2020-08-19 06:39:25,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:39:25,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 06:39:25,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269215854] [2020-08-19 06:39:25,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 06:39:25,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:25,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 06:39:25,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:39:25,992 INFO L87 Difference]: Start difference. First operand 378 states and 436 transitions. Second operand 9 states. [2020-08-19 06:39:26,367 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:39:26,914 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:39:28,595 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:39:30,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:30,817 INFO L93 Difference]: Finished difference Result 980 states and 1245 transitions. [2020-08-19 06:39:30,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 06:39:30,817 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-08-19 06:39:30,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:30,823 INFO L225 Difference]: With dead ends: 980 [2020-08-19 06:39:30,824 INFO L226 Difference]: Without dead ends: 749 [2020-08-19 06:39:30,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-19 06:39:30,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-19 06:39:30,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 678. [2020-08-19 06:39:30,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-19 06:39:30,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 813 transitions. [2020-08-19 06:39:30,970 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 813 transitions. Word has length 94 [2020-08-19 06:39:30,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:30,970 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 813 transitions. [2020-08-19 06:39:30,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 06:39:30,971 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 813 transitions. [2020-08-19 06:39:30,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-19 06:39:30,973 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:30,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:39:30,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 06:39:30,973 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:30,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:30,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1892117019, now seen corresponding path program 1 times [2020-08-19 06:39:30,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:30,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727738752] [2020-08-19 06:39:30,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:31,188 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:39:31,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:31,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:31,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:39:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:31,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:39:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:31,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:39:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:31,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 06:39:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:31,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 06:39:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:31,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:31,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:31,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:31,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:31,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:39:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:31,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 06:39:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:31,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 06:39:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:31,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-19 06:39:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:31,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:39:31,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727738752] [2020-08-19 06:39:31,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:39:31,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:39:31,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52963049] [2020-08-19 06:39:31,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:39:31,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:31,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:39:31,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:39:31,341 INFO L87 Difference]: Start difference. First operand 678 states and 813 transitions. Second operand 8 states. [2020-08-19 06:39:32,207 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:32,426 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:39:32,666 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:33,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:33,867 INFO L93 Difference]: Finished difference Result 1250 states and 1552 transitions. [2020-08-19 06:39:33,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 06:39:33,874 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-19 06:39:33,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:33,879 INFO L225 Difference]: With dead ends: 1250 [2020-08-19 06:39:33,879 INFO L226 Difference]: Without dead ends: 723 [2020-08-19 06:39:33,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:39:33,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-08-19 06:39:34,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 678. [2020-08-19 06:39:34,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-19 06:39:34,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 812 transitions. [2020-08-19 06:39:34,007 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 812 transitions. Word has length 94 [2020-08-19 06:39:34,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:34,008 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 812 transitions. [2020-08-19 06:39:34,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:39:34,008 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 812 transitions. [2020-08-19 06:39:34,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-19 06:39:34,010 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:34,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:39:34,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 06:39:34,010 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:34,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:34,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1743318755, now seen corresponding path program 1 times [2020-08-19 06:39:34,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:34,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311791399] [2020-08-19 06:39:34,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:34,279 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:39:34,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:34,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:34,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:39:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:34,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:39:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:34,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:39:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:34,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 06:39:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:34,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 06:39:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:34,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:34,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:34,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:34,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:34,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:34,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:34,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:39:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:34,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 06:39:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:34,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 06:39:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:34,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-19 06:39:34,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:34,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:39:34,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311791399] [2020-08-19 06:39:34,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:39:34,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 06:39:34,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993923003] [2020-08-19 06:39:34,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 06:39:34,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:34,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 06:39:34,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:39:34,438 INFO L87 Difference]: Start difference. First operand 678 states and 812 transitions. Second operand 12 states. [2020-08-19 06:39:34,940 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:35,179 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:35,406 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:36,112 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:36,350 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:39:36,617 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:36,860 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:38,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:38,145 INFO L93 Difference]: Finished difference Result 1343 states and 1658 transitions. [2020-08-19 06:39:38,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 06:39:38,146 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-08-19 06:39:38,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:38,173 INFO L225 Difference]: With dead ends: 1343 [2020-08-19 06:39:38,173 INFO L226 Difference]: Without dead ends: 689 [2020-08-19 06:39:38,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-19 06:39:38,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2020-08-19 06:39:38,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 649. [2020-08-19 06:39:38,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-19 06:39:38,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 772 transitions. [2020-08-19 06:39:38,304 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 772 transitions. Word has length 94 [2020-08-19 06:39:38,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:38,304 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 772 transitions. [2020-08-19 06:39:38,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 06:39:38,304 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 772 transitions. [2020-08-19 06:39:38,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-19 06:39:38,308 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:38,309 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:39:38,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 06:39:38,309 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:38,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:38,309 INFO L82 PathProgramCache]: Analyzing trace with hash -794227168, now seen corresponding path program 1 times [2020-08-19 06:39:38,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:38,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335209159] [2020-08-19 06:39:38,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:38,595 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:39:38,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:38,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:38,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:39:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:38,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:39:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:38,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:39:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:38,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 06:39:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:38,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 06:39:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:38,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:38,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:38,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:38,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:38,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:38,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:39:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:38,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 06:39:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:38,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 06:39:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:38,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 06:39:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:38,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:39:38,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335209159] [2020-08-19 06:39:38,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:39:38,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 06:39:38,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815438558] [2020-08-19 06:39:38,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 06:39:38,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:38,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 06:39:38,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-19 06:39:38,742 INFO L87 Difference]: Start difference. First operand 649 states and 772 transitions. Second operand 13 states. [2020-08-19 06:39:39,318 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:39,562 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:39,804 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:40,877 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:39:41,495 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:41,819 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:39:42,086 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:39:42,800 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:39:43,119 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:43,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:43,701 INFO L93 Difference]: Finished difference Result 1307 states and 1571 transitions. [2020-08-19 06:39:43,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-19 06:39:43,702 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 95 [2020-08-19 06:39:43,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:43,707 INFO L225 Difference]: With dead ends: 1307 [2020-08-19 06:39:43,707 INFO L226 Difference]: Without dead ends: 682 [2020-08-19 06:39:43,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2020-08-19 06:39:43,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-08-19 06:39:43,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 649. [2020-08-19 06:39:43,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-19 06:39:43,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 756 transitions. [2020-08-19 06:39:43,820 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 756 transitions. Word has length 95 [2020-08-19 06:39:43,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:43,820 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 756 transitions. [2020-08-19 06:39:43,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 06:39:43,821 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 756 transitions. [2020-08-19 06:39:43,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-19 06:39:43,823 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:43,823 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:43,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 06:39:43,824 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:43,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:43,824 INFO L82 PathProgramCache]: Analyzing trace with hash -252196105, now seen corresponding path program 1 times [2020-08-19 06:39:43,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:43,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401254824] [2020-08-19 06:39:43,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:44,065 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:39:44,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:44,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:44,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:39:44,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:44,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:39:44,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:44,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:39:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:44,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 06:39:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:44,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:44,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:44,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:44,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:44,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:44,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:44,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:39:44,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:44,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 06:39:44,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:44,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:44,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-19 06:39:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:44,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-19 06:39:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:44,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:44,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:44,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 06:39:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:44,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 06:39:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:44,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-19 06:39:44,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:44,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-19 06:39:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:44,253 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-19 06:39:44,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401254824] [2020-08-19 06:39:44,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:39:44,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 06:39:44,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103202470] [2020-08-19 06:39:44,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 06:39:44,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:44,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 06:39:44,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 06:39:44,256 INFO L87 Difference]: Start difference. First operand 649 states and 756 transitions. Second operand 10 states. [2020-08-19 06:39:45,328 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:45,548 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:39:45,792 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:46,012 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:46,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:46,972 INFO L93 Difference]: Finished difference Result 1216 states and 1446 transitions. [2020-08-19 06:39:46,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 06:39:46,977 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 139 [2020-08-19 06:39:46,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:46,982 INFO L225 Difference]: With dead ends: 1216 [2020-08-19 06:39:46,982 INFO L226 Difference]: Without dead ends: 670 [2020-08-19 06:39:46,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 06:39:46,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-08-19 06:39:47,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 649. [2020-08-19 06:39:47,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-19 06:39:47,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 754 transitions. [2020-08-19 06:39:47,096 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 754 transitions. Word has length 139 [2020-08-19 06:39:47,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:47,096 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 754 transitions. [2020-08-19 06:39:47,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 06:39:47,097 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 754 transitions. [2020-08-19 06:39:47,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-19 06:39:47,098 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:47,099 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:47,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 06:39:47,099 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:47,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:47,100 INFO L82 PathProgramCache]: Analyzing trace with hash 2084196405, now seen corresponding path program 1 times [2020-08-19 06:39:47,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:47,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246146585] [2020-08-19 06:39:47,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:47,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:47,380 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:39:47,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:47,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:47,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:47,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:39:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:47,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:39:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:47,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:39:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:47,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 06:39:47,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:47,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:47,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:47,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:47,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:47,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:47,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:39:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:47,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 06:39:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:47,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:47,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-19 06:39:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:47,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-19 06:39:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:47,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:47,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:47,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:47,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 06:39:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:47,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 06:39:47,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:47,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-19 06:39:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:47,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-19 06:39:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:47,562 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-19 06:39:47,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246146585] [2020-08-19 06:39:47,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:39:47,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 06:39:47,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647991885] [2020-08-19 06:39:47,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 06:39:47,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:47,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 06:39:47,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:39:47,564 INFO L87 Difference]: Start difference. First operand 649 states and 754 transitions. Second operand 12 states. [2020-08-19 06:39:48,123 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:48,332 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:48,555 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:49,217 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:49,466 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:49,700 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:50,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:50,866 INFO L93 Difference]: Finished difference Result 1124 states and 1336 transitions. [2020-08-19 06:39:50,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 06:39:50,867 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 139 [2020-08-19 06:39:50,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:50,871 INFO L225 Difference]: With dead ends: 1124 [2020-08-19 06:39:50,871 INFO L226 Difference]: Without dead ends: 573 [2020-08-19 06:39:50,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 06:39:50,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-08-19 06:39:50,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 552. [2020-08-19 06:39:50,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-08-19 06:39:50,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 639 transitions. [2020-08-19 06:39:50,966 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 639 transitions. Word has length 139 [2020-08-19 06:39:50,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:50,967 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 639 transitions. [2020-08-19 06:39:50,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 06:39:50,967 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 639 transitions. [2020-08-19 06:39:50,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-19 06:39:50,969 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:50,969 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:50,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 06:39:50,969 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:50,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:50,970 INFO L82 PathProgramCache]: Analyzing trace with hash 2081124794, now seen corresponding path program 1 times [2020-08-19 06:39:50,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:50,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590016860] [2020-08-19 06:39:50,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:51,290 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:39:51,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:51,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:51,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:39:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:51,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:39:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:51,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:39:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:51,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 06:39:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:51,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 06:39:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:51,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:51,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:51,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:51,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:51,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:51,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:51,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:51,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:39:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:51,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 06:39:51,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:51,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:51,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-19 06:39:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:51,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-19 06:39:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:51,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:51,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:51,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 06:39:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:51,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-19 06:39:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:51,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 06:39:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:51,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-19 06:39:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:51,511 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-19 06:39:51,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590016860] [2020-08-19 06:39:51,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:39:51,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 06:39:51,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185542472] [2020-08-19 06:39:51,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 06:39:51,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:51,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 06:39:51,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-19 06:39:51,514 INFO L87 Difference]: Start difference. First operand 552 states and 639 transitions. Second operand 11 states. [2020-08-19 06:39:52,181 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:39:52,811 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:53,786 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:54,321 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-19 06:39:54,818 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-19 06:39:55,048 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:39:56,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:56,699 INFO L93 Difference]: Finished difference Result 1637 states and 1961 transitions. [2020-08-19 06:39:56,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 06:39:56,699 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 143 [2020-08-19 06:39:56,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:56,705 INFO L225 Difference]: With dead ends: 1637 [2020-08-19 06:39:56,706 INFO L226 Difference]: Without dead ends: 1109 [2020-08-19 06:39:56,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-08-19 06:39:56,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2020-08-19 06:39:56,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1077. [2020-08-19 06:39:56,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-08-19 06:39:56,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1232 transitions. [2020-08-19 06:39:56,913 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1232 transitions. Word has length 143 [2020-08-19 06:39:56,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:56,913 INFO L479 AbstractCegarLoop]: Abstraction has 1077 states and 1232 transitions. [2020-08-19 06:39:56,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 06:39:56,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1232 transitions. [2020-08-19 06:39:56,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-19 06:39:56,916 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:56,917 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:56,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 06:39:56,917 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:56,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:56,918 INFO L82 PathProgramCache]: Analyzing trace with hash -708969378, now seen corresponding path program 1 times [2020-08-19 06:39:56,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:56,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797151353] [2020-08-19 06:39:56,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:57,224 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:39:57,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:57,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:57,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:39:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:57,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:39:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:57,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:39:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:57,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 06:39:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:57,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 06:39:57,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:57,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 06:39:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:57,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:57,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:57,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:57,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:57,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:57,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:57,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:39:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:57,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 06:39:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:57,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:57,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 06:39:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:57,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 06:39:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:57,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:57,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:57,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 06:39:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:57,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-19 06:39:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:57,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-19 06:39:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:57,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-19 06:39:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:57,433 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 06:39:57,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797151353] [2020-08-19 06:39:57,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:39:57,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 06:39:57,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589814503] [2020-08-19 06:39:57,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 06:39:57,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:57,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 06:39:57,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-19 06:39:57,436 INFO L87 Difference]: Start difference. First operand 1077 states and 1232 transitions. Second operand 15 states. [2020-08-19 06:39:57,942 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:58,185 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:58,404 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:58,996 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:40:00,141 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:40:00,466 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:40:00,738 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:40:00,974 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:40:03,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:40:03,086 INFO L93 Difference]: Finished difference Result 2187 states and 2605 transitions. [2020-08-19 06:40:03,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 06:40:03,087 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 147 [2020-08-19 06:40:03,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:40:03,093 INFO L225 Difference]: With dead ends: 2187 [2020-08-19 06:40:03,093 INFO L226 Difference]: Without dead ends: 1134 [2020-08-19 06:40:03,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=227, Invalid=765, Unknown=0, NotChecked=0, Total=992 [2020-08-19 06:40:03,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2020-08-19 06:40:03,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1011. [2020-08-19 06:40:03,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1011 states. [2020-08-19 06:40:03,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1153 transitions. [2020-08-19 06:40:03,313 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1153 transitions. Word has length 147 [2020-08-19 06:40:03,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:40:03,314 INFO L479 AbstractCegarLoop]: Abstraction has 1011 states and 1153 transitions. [2020-08-19 06:40:03,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 06:40:03,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1153 transitions. [2020-08-19 06:40:03,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-19 06:40:03,317 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:40:03,317 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:40:03,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 06:40:03,318 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:40:03,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:40:03,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1161992490, now seen corresponding path program 1 times [2020-08-19 06:40:03,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:40:03,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582142610] [2020-08-19 06:40:03,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:40:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:40:03,587 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:40:03,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:40:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:40:03,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:40:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:40:03,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:40:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:40:03,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:40:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:40:03,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:40:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:40:03,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 06:40:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:40:03,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 06:40:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:40:03,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:40:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:40:03,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:40:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:40:03,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:40:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:40:03,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:40:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:40:03,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:40:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:40:03,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:40:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:40:03,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 06:40:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:40:03,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:40:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:40:03,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 06:40:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:40:03,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-19 06:40:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:40:03,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-19 06:40:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:40:03,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:40:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:40:03,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:40:03,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:40:03,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 06:40:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:40:03,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 06:40:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:40:03,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-19 06:40:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:40:03,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-19 06:40:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:40:03,823 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-08-19 06:40:03,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582142610] [2020-08-19 06:40:03,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:40:03,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 06:40:03,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596912005] [2020-08-19 06:40:03,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 06:40:03,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:40:03,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 06:40:03,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-19 06:40:03,825 INFO L87 Difference]: Start difference. First operand 1011 states and 1153 transitions. Second operand 15 states. [2020-08-19 06:40:04,252 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:40:04,990 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:40:06,215 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:40:06,576 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:40:07,113 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-19 06:40:07,578 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189