/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:38:59,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:38:59,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:38:59,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:38:59,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:38:59,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:38:59,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:38:59,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:38:59,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:38:59,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:38:59,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:38:59,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:38:59,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:38:59,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:38:59,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:38:59,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:38:59,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:38:59,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:38:59,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:38:59,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:38:59,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:38:59,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:38:59,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:38:59,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:38:59,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:38:59,878 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:38:59,878 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:38:59,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:38:59,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:38:59,880 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 02:38:59,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:38:59,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:38:59,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:38:59,883 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:38:59,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:38:59,884 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:38:59,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:38:59,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:38:59,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:38:59,886 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:38:59,887 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:38:59,888 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 02:38:59,910 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:38:59,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:38:59,911 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:38:59,911 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:38:59,912 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:38:59,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:38:59,912 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:38:59,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:38:59,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:38:59,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:38:59,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:38:59,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:38:59,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:38:59,913 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:38:59,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:38:59,914 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:38:59,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:38:59,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:38:59,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:38:59,914 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:38:59,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:38:59,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:38:59,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:38:59,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:38:59,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:38:59,916 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:38:59,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:38:59,916 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:38:59,916 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:38:59,916 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:39:00,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:39:00,238 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:39:00,242 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:39:00,244 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:39:00,247 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:39:00,248 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c [2020-08-19 02:39:00,312 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a65acbd0/e0b2f2b4f437416383a70501f24ede8c/FLAG27c83a276 [2020-08-19 02:39:00,855 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:39:00,857 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c [2020-08-19 02:39:00,884 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a65acbd0/e0b2f2b4f437416383a70501f24ede8c/FLAG27c83a276 [2020-08-19 02:39:01,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a65acbd0/e0b2f2b4f437416383a70501f24ede8c [2020-08-19 02:39:01,178 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:39:01,180 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:39:01,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:39:01,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:39:01,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:39:01,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:39:01" (1/1) ... [2020-08-19 02:39:01,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@697fd79d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:01, skipping insertion in model container [2020-08-19 02:39:01,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:39:01" (1/1) ... [2020-08-19 02:39:01,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:39:01,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:39:01,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:39:01,680 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:39:01,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:39:01,850 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:39:01,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:01 WrapperNode [2020-08-19 02:39:01,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:39:01,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:39:01,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:39:01,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:39:01,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:01" (1/1) ... [2020-08-19 02:39:01,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:01" (1/1) ... [2020-08-19 02:39:01,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:01" (1/1) ... [2020-08-19 02:39:01,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:01" (1/1) ... [2020-08-19 02:39:01,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:01" (1/1) ... [2020-08-19 02:39:01,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:01" (1/1) ... [2020-08-19 02:39:01,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:01" (1/1) ... [2020-08-19 02:39:01,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:39:01,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:39:01,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:39:01,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:39:01,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:01" (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 02:39:02,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:39:02,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:39:02,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 02:39:02,047 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 02:39:02,047 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 02:39:02,047 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 02:39:02,047 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 02:39:02,047 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:39:02,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-19 02:39:02,048 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 02:39:02,049 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 02:39:02,049 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 02:39:02,049 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 02:39:02,049 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 02:39:02,049 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 02:39:02,050 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 02:39:02,050 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 02:39:02,050 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 02:39:02,050 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 02:39:02,051 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 02:39:02,051 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 02:39:02,051 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 02:39:02,051 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 02:39:02,051 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 02:39:02,051 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 02:39:02,052 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 02:39:02,053 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 02:39:02,053 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 02:39:02,053 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 02:39:02,053 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 02:39:02,053 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 02:39:02,053 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 02:39:02,053 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 02:39:02,054 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 02:39:02,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 02:39:02,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 02:39:02,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 02:39:02,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 02:39:02,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 02:39:02,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 02:39:02,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 02:39:02,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:39:02,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:39:02,055 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 02:39:02,055 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 02:39:02,055 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 02:39:02,056 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 02:39:02,056 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 02:39:02,056 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 02:39:02,056 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 02:39:02,056 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 02:39:02,056 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 02:39:02,056 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 02:39:02,057 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 02:39:02,057 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 02:39:02,057 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 02:39:02,057 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:39:02,058 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 02:39:02,058 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 02:39:02,058 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 02:39:02,058 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-19 02:39:02,058 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 02:39:02,058 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 02:39:02,059 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 02:39:02,059 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 02:39:02,059 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 02:39:02,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:39:02,059 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 02:39:02,059 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 02:39:02,059 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 02:39:02,060 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 02:39:02,061 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 02:39:02,061 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 02:39:02,062 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 02:39:02,062 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 02:39:02,063 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 02:39:02,063 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 02:39:02,063 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 02:39:02,063 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 02:39:02,063 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 02:39:02,063 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 02:39:02,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 02:39:02,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 02:39:02,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:39:02,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 02:39:02,065 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 02:39:02,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:39:02,065 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 02:39:02,065 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 02:39:02,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:39:02,066 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 02:39:02,066 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 02:39:02,066 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 02:39:02,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:39:02,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 02:39:02,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:39:03,097 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:39:03,098 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 02:39:03,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:39:03 BoogieIcfgContainer [2020-08-19 02:39:03,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:39:03,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:39:03,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:39:03,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:39:03,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:39:01" (1/3) ... [2020-08-19 02:39:03,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c929ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:39:03, skipping insertion in model container [2020-08-19 02:39:03,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:01" (2/3) ... [2020-08-19 02:39:03,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c929ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:39:03, skipping insertion in model container [2020-08-19 02:39:03,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:39:03" (3/3) ... [2020-08-19 02:39:03,118 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product51.cil.c [2020-08-19 02:39:03,128 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:39:03,135 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:39:03,145 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:39:03,164 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:39:03,165 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:39:03,165 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:39:03,165 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:39:03,165 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:39:03,166 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:39:03,166 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:39:03,166 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:39:03,188 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-08-19 02:39:03,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 02:39:03,198 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:03,200 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] [2020-08-19 02:39:03,200 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:03,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:03,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1091923628, now seen corresponding path program 1 times [2020-08-19 02:39:03,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:03,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296370395] [2020-08-19 02:39:03,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:03,900 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:03,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:03,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:04,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:04,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:04,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:04,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:04,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:04,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:39:04,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:04,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:39:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:04,048 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 02:39:04,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296370395] [2020-08-19 02:39:04,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:39:04,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:39:04,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723369889] [2020-08-19 02:39:04,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:39:04,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:04,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:39:04,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:39:04,079 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 3 states. [2020-08-19 02:39:05,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:05,233 INFO L93 Difference]: Finished difference Result 311 states and 407 transitions. [2020-08-19 02:39:05,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:39:05,235 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 02:39:05,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:05,254 INFO L225 Difference]: With dead ends: 311 [2020-08-19 02:39:05,255 INFO L226 Difference]: Without dead ends: 168 [2020-08-19 02:39:05,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 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 02:39:05,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-19 02:39:05,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 134. [2020-08-19 02:39:05,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-19 02:39:05,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 158 transitions. [2020-08-19 02:39:05,366 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 158 transitions. Word has length 46 [2020-08-19 02:39:05,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:05,366 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 158 transitions. [2020-08-19 02:39:05,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:39:05,367 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 158 transitions. [2020-08-19 02:39:05,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 02:39:05,370 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:05,371 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] [2020-08-19 02:39:05,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:39:05,371 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:05,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:05,372 INFO L82 PathProgramCache]: Analyzing trace with hash 644500822, now seen corresponding path program 1 times [2020-08-19 02:39:05,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:05,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042139348] [2020-08-19 02:39:05,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:05,678 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:05,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:05,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:05,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:05,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:05,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:05,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:39:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:05,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 02:39:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:05,720 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 02:39:05,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042139348] [2020-08-19 02:39:05,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:39:05,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 02:39:05,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235234870] [2020-08-19 02:39:05,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 02:39:05,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:05,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 02:39:05,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:39:05,724 INFO L87 Difference]: Start difference. First operand 134 states and 158 transitions. Second operand 4 states. [2020-08-19 02:39:06,162 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:07,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:07,009 INFO L93 Difference]: Finished difference Result 238 states and 290 transitions. [2020-08-19 02:39:07,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 02:39:07,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 02:39:07,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:07,013 INFO L225 Difference]: With dead ends: 238 [2020-08-19 02:39:07,014 INFO L226 Difference]: Without dead ends: 152 [2020-08-19 02:39:07,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 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 02:39:07,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-08-19 02:39:07,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 125. [2020-08-19 02:39:07,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-19 02:39:07,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 146 transitions. [2020-08-19 02:39:07,058 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 146 transitions. Word has length 47 [2020-08-19 02:39:07,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:07,058 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 146 transitions. [2020-08-19 02:39:07,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 02:39:07,058 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 146 transitions. [2020-08-19 02:39:07,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 02:39:07,061 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:07,061 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] [2020-08-19 02:39:07,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:39:07,061 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:07,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:07,062 INFO L82 PathProgramCache]: Analyzing trace with hash -350015351, now seen corresponding path program 1 times [2020-08-19 02:39:07,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:07,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532037906] [2020-08-19 02:39:07,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:07,412 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:07,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:07,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:07,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:07,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:07,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:07,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:39:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:07,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:39:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:07,534 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 02:39:07,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532037906] [2020-08-19 02:39:07,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:39:07,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 02:39:07,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005200297] [2020-08-19 02:39:07,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:39:07,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:07,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:39:07,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:39:07,540 INFO L87 Difference]: Start difference. First operand 125 states and 146 transitions. Second operand 8 states. [2020-08-19 02:39:07,915 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:08,270 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:08,530 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:08,767 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:09,550 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:11,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:11,405 INFO L93 Difference]: Finished difference Result 427 states and 530 transitions. [2020-08-19 02:39:11,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 02:39:11,406 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 02:39:11,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:11,412 INFO L225 Difference]: With dead ends: 427 [2020-08-19 02:39:11,412 INFO L226 Difference]: Without dead ends: 326 [2020-08-19 02:39:11,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-19 02:39:11,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-08-19 02:39:11,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 268. [2020-08-19 02:39:11,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-19 02:39:11,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 324 transitions. [2020-08-19 02:39:11,497 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 324 transitions. Word has length 51 [2020-08-19 02:39:11,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:11,498 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 324 transitions. [2020-08-19 02:39:11,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:39:11,498 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 324 transitions. [2020-08-19 02:39:11,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 02:39:11,501 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:11,501 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] [2020-08-19 02:39:11,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:39:11,502 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:11,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:11,502 INFO L82 PathProgramCache]: Analyzing trace with hash -103520613, now seen corresponding path program 1 times [2020-08-19 02:39:11,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:11,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518032502] [2020-08-19 02:39:11,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:11,906 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:11,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:11,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:11,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:11,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:12,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:12,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:39:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:12,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:39:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:12,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 02:39:12,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:12,096 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 02:39:12,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518032502] [2020-08-19 02:39:12,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:39:12,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 02:39:12,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008471344] [2020-08-19 02:39:12,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:39:12,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:12,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:39:12,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:39:12,099 INFO L87 Difference]: Start difference. First operand 268 states and 324 transitions. Second operand 12 states. [2020-08-19 02:39:12,525 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:12,854 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:13,123 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:13,389 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:13,925 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:14,821 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:15,224 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:15,585 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:15,851 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:16,153 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:16,513 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:16,886 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:17,251 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:18,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:18,900 INFO L93 Difference]: Finished difference Result 1081 states and 1492 transitions. [2020-08-19 02:39:18,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 02:39:18,901 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-19 02:39:18,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:18,911 INFO L225 Difference]: With dead ends: 1081 [2020-08-19 02:39:18,911 INFO L226 Difference]: Without dead ends: 837 [2020-08-19 02:39:18,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-19 02:39:18,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2020-08-19 02:39:19,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 744. [2020-08-19 02:39:19,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2020-08-19 02:39:19,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 950 transitions. [2020-08-19 02:39:19,127 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 950 transitions. Word has length 57 [2020-08-19 02:39:19,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:19,128 INFO L479 AbstractCegarLoop]: Abstraction has 744 states and 950 transitions. [2020-08-19 02:39:19,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:39:19,128 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 950 transitions. [2020-08-19 02:39:19,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 02:39:19,133 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:19,133 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] [2020-08-19 02:39:19,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:39:19,134 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:19,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:19,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1065334495, now seen corresponding path program 1 times [2020-08-19 02:39:19,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:19,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150500619] [2020-08-19 02:39:19,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:19,404 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:19,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:19,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:19,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:19,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:19,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:19,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:39:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:19,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 02:39:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:19,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 02:39:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:19,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 02:39:19,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:19,514 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 02:39:19,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150500619] [2020-08-19 02:39:19,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:39:19,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 02:39:19,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203160504] [2020-08-19 02:39:19,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:39:19,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:19,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:39:19,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:39:19,521 INFO L87 Difference]: Start difference. First operand 744 states and 950 transitions. Second operand 6 states. [2020-08-19 02:39:19,845 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:21,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:21,645 INFO L93 Difference]: Finished difference Result 1779 states and 2437 transitions. [2020-08-19 02:39:21,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 02:39:21,647 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-19 02:39:21,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:21,660 INFO L225 Difference]: With dead ends: 1779 [2020-08-19 02:39:21,660 INFO L226 Difference]: Without dead ends: 1059 [2020-08-19 02:39:21,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-19 02:39:21,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2020-08-19 02:39:21,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 972. [2020-08-19 02:39:21,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 972 states. [2020-08-19 02:39:21,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1232 transitions. [2020-08-19 02:39:21,906 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1232 transitions. Word has length 61 [2020-08-19 02:39:21,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:21,907 INFO L479 AbstractCegarLoop]: Abstraction has 972 states and 1232 transitions. [2020-08-19 02:39:21,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:39:21,907 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1232 transitions. [2020-08-19 02:39:21,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 02:39:21,910 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:21,910 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 02:39:21,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:39:21,911 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:21,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:21,911 INFO L82 PathProgramCache]: Analyzing trace with hash 380759586, now seen corresponding path program 1 times [2020-08-19 02:39:21,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:21,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561734938] [2020-08-19 02:39:21,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,248 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:22,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:39:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:39:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 02:39:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 02:39:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 02:39:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 02:39:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,428 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 02:39:22,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561734938] [2020-08-19 02:39:22,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:22,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 02:39:22,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635960270] [2020-08-19 02:39:22,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:39:22,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:22,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:39:22,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:39:22,432 INFO L87 Difference]: Start difference. First operand 972 states and 1232 transitions. Second operand 10 states. [2020-08-19 02:39:23,067 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-19 02:39:23,585 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:25,383 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:27,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:27,236 INFO L93 Difference]: Finished difference Result 1881 states and 2481 transitions. [2020-08-19 02:39:27,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 02:39:27,236 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-19 02:39:27,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:27,246 INFO L225 Difference]: With dead ends: 1881 [2020-08-19 02:39:27,246 INFO L226 Difference]: Without dead ends: 1176 [2020-08-19 02:39:27,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-19 02:39:27,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2020-08-19 02:39:27,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1079. [2020-08-19 02:39:27,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1079 states. [2020-08-19 02:39:27,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1343 transitions. [2020-08-19 02:39:27,461 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1343 transitions. Word has length 88 [2020-08-19 02:39:27,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:27,461 INFO L479 AbstractCegarLoop]: Abstraction has 1079 states and 1343 transitions. [2020-08-19 02:39:27,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:39:27,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1343 transitions. [2020-08-19 02:39:27,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-19 02:39:27,466 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:27,466 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 02:39:27,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:39:27,467 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:27,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:27,467 INFO L82 PathProgramCache]: Analyzing trace with hash 605263964, now seen corresponding path program 1 times [2020-08-19 02:39:27,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:27,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855108715] [2020-08-19 02:39:27,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:27,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,709 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:27,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:39:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:27,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:39:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 02:39:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 02:39:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:39:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 02:39:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-19 02:39:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,918 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 02:39:27,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855108715] [2020-08-19 02:39:27,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:27,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 02:39:27,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717323093] [2020-08-19 02:39:27,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:39:27,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:27,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:39:27,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:39:27,928 INFO L87 Difference]: Start difference. First operand 1079 states and 1343 transitions. Second operand 10 states. [2020-08-19 02:39:29,007 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:29,261 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:39:29,508 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:29,751 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:30,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:30,909 INFO L93 Difference]: Finished difference Result 2275 states and 2959 transitions. [2020-08-19 02:39:30,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 02:39:30,910 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 128 [2020-08-19 02:39:30,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:30,918 INFO L225 Difference]: With dead ends: 2275 [2020-08-19 02:39:30,919 INFO L226 Difference]: Without dead ends: 1220 [2020-08-19 02:39:30,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 02:39:30,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2020-08-19 02:39:31,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1109. [2020-08-19 02:39:31,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1109 states. [2020-08-19 02:39:31,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1377 transitions. [2020-08-19 02:39:31,181 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1377 transitions. Word has length 128 [2020-08-19 02:39:31,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:31,182 INFO L479 AbstractCegarLoop]: Abstraction has 1109 states and 1377 transitions. [2020-08-19 02:39:31,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:39:31,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1377 transitions. [2020-08-19 02:39:31,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-19 02:39:31,187 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:31,188 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 02:39:31,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 02:39:31,189 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:31,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:31,189 INFO L82 PathProgramCache]: Analyzing trace with hash -2030061671, now seen corresponding path program 1 times [2020-08-19 02:39:31,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:31,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511639139] [2020-08-19 02:39:31,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:31,471 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:31,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:31,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:31,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:31,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:31,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:31,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:39:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:31,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 02:39:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:31,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:31,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:31,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:31,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:31,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:31,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:31,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:31,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:39:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:31,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:31,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 02:39:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:31,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 02:39:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:31,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:31,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:31,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:39:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:31,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-19 02:39:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:31,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-19 02:39:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:31,640 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-19 02:39:31,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511639139] [2020-08-19 02:39:31,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:31,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 02:39:31,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573502067] [2020-08-19 02:39:31,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:39:31,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:31,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:39:31,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:39:31,642 INFO L87 Difference]: Start difference. First operand 1109 states and 1377 transitions. Second operand 10 states. [2020-08-19 02:39:33,358 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:33,579 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:33,822 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:34,052 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:34,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:34,589 INFO L93 Difference]: Finished difference Result 2059 states and 2638 transitions. [2020-08-19 02:39:34,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 02:39:34,596 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-08-19 02:39:34,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:34,604 INFO L225 Difference]: With dead ends: 2059 [2020-08-19 02:39:34,604 INFO L226 Difference]: Without dead ends: 1256 [2020-08-19 02:39:34,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-08-19 02:39:34,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2020-08-19 02:39:34,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1145. [2020-08-19 02:39:34,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1145 states. [2020-08-19 02:39:34,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1425 transitions. [2020-08-19 02:39:34,812 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1425 transitions. Word has length 132 [2020-08-19 02:39:34,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:34,813 INFO L479 AbstractCegarLoop]: Abstraction has 1145 states and 1425 transitions. [2020-08-19 02:39:34,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:39:34,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1425 transitions. [2020-08-19 02:39:34,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-19 02:39:34,817 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:34,818 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 02:39:34,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 02:39:34,818 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:34,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:34,819 INFO L82 PathProgramCache]: Analyzing trace with hash 336030620, now seen corresponding path program 1 times [2020-08-19 02:39:34,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:34,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482003737] [2020-08-19 02:39:34,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:35,062 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:35,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:35,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:35,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:35,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:35,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:35,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:39:35,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:35,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:35,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:35,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:35,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:35,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:35,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:35,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:35,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:39:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:35,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:35,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 02:39:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:35,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 02:39:35,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:35,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:35,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:35,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:39:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:35,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 02:39:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:35,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-19 02:39:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:35,227 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 02:39:35,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482003737] [2020-08-19 02:39:35,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:35,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 02:39:35,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178287805] [2020-08-19 02:39:35,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:39:35,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:35,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:39:35,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:39:35,229 INFO L87 Difference]: Start difference. First operand 1145 states and 1425 transitions. Second operand 12 states. [2020-08-19 02:39:36,132 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:36,476 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:36,812 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:37,652 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:37,915 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:38,160 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:39,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:39,352 INFO L93 Difference]: Finished difference Result 2153 states and 2757 transitions. [2020-08-19 02:39:39,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 02:39:39,357 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-19 02:39:39,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:39,364 INFO L225 Difference]: With dead ends: 2153 [2020-08-19 02:39:39,364 INFO L226 Difference]: Without dead ends: 1032 [2020-08-19 02:39:39,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 02:39:39,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2020-08-19 02:39:39,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 976. [2020-08-19 02:39:39,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 976 states. [2020-08-19 02:39:39,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1182 transitions. [2020-08-19 02:39:39,546 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1182 transitions. Word has length 128 [2020-08-19 02:39:39,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:39,548 INFO L479 AbstractCegarLoop]: Abstraction has 976 states and 1182 transitions. [2020-08-19 02:39:39,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:39:39,548 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1182 transitions. [2020-08-19 02:39:39,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-19 02:39:39,553 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:39,553 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 02:39:39,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 02:39:39,554 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:39,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:39,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1755432535, now seen corresponding path program 1 times [2020-08-19 02:39:39,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:39,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198914752] [2020-08-19 02:39:39,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,906 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:39,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:39:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 02:39:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:39,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:39:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 02:39:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 02:39:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:40,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:40,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:40,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:39:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:40,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-19 02:39:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:40,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-19 02:39:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:40,041 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-19 02:39:40,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198914752] [2020-08-19 02:39:40,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:40,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 02:39:40,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917184682] [2020-08-19 02:39:40,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:39:40,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:40,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:39:40,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:39:40,048 INFO L87 Difference]: Start difference. First operand 976 states and 1182 transitions. Second operand 10 states. [2020-08-19 02:39:40,706 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:42,305 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:42,574 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:42,805 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:43,037 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:43,294 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:43,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:43,628 INFO L93 Difference]: Finished difference Result 1053 states and 1300 transitions. [2020-08-19 02:39:43,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 02:39:43,628 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-08-19 02:39:43,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:43,635 INFO L225 Difference]: With dead ends: 1053 [2020-08-19 02:39:43,635 INFO L226 Difference]: Without dead ends: 1050 [2020-08-19 02:39:43,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 02:39:43,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2020-08-19 02:39:43,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 976. [2020-08-19 02:39:43,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 976 states. [2020-08-19 02:39:43,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1177 transitions. [2020-08-19 02:39:43,822 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1177 transitions. Word has length 132 [2020-08-19 02:39:43,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:43,822 INFO L479 AbstractCegarLoop]: Abstraction has 976 states and 1177 transitions. [2020-08-19 02:39:43,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:39:43,823 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1177 transitions. [2020-08-19 02:39:43,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-19 02:39:43,828 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:43,828 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 02:39:43,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 02:39:43,829 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:43,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:43,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1244866615, now seen corresponding path program 1 times [2020-08-19 02:39:43,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:43,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721119179] [2020-08-19 02:39:43,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:43,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:44,135 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:44,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:44,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:44,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:44,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:44,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:44,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:44,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:39:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:44,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 02:39:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:44,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:44,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:44,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:44,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:44,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:44,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:44,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:39:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:44,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:44,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 02:39:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:44,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 02:39:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:44,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:44,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:44,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:39:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:44,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:44,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-19 02:39:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:44,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-19 02:39:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:44,308 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-19 02:39:44,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721119179] [2020-08-19 02:39:44,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:44,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 02:39:44,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284891589] [2020-08-19 02:39:44,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:39:44,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:44,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:39:44,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:39:44,310 INFO L87 Difference]: Start difference. First operand 976 states and 1177 transitions. Second operand 12 states. [2020-08-19 02:39:44,771 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:45,615 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:45,905 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:46,172 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:46,403 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:46,651 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:46,976 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:47,751 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:48,019 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:48,256 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:50,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:50,341 INFO L93 Difference]: Finished difference Result 2450 states and 3139 transitions. [2020-08-19 02:39:50,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-19 02:39:50,347 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 136 [2020-08-19 02:39:50,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:50,359 INFO L225 Difference]: With dead ends: 2450 [2020-08-19 02:39:50,359 INFO L226 Difference]: Without dead ends: 1653 [2020-08-19 02:39:50,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-19 02:39:50,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2020-08-19 02:39:50,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1471. [2020-08-19 02:39:50,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1471 states. [2020-08-19 02:39:50,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 1804 transitions. [2020-08-19 02:39:50,738 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 1804 transitions. Word has length 136 [2020-08-19 02:39:50,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:50,739 INFO L479 AbstractCegarLoop]: Abstraction has 1471 states and 1804 transitions. [2020-08-19 02:39:50,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:39:50,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 1804 transitions. [2020-08-19 02:39:50,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-08-19 02:39:50,747 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:50,747 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:39:50,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 02:39:50,748 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:50,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:50,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1692744000, now seen corresponding path program 2 times [2020-08-19 02:39:50,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:50,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518572718] [2020-08-19 02:39:50,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,044 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:51,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:51,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:39:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 02:39:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:39:51,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 02:39:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:39:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:39:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 02:39:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-19 02:39:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:39:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-19 02:39:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-19 02:39:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:51,394 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 46 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-19 02:39:51,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518572718] [2020-08-19 02:39:51,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:51,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 02:39:51,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636935327] [2020-08-19 02:39:51,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 02:39:51,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:51,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 02:39:51,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-19 02:39:51,397 INFO L87 Difference]: Start difference. First operand 1471 states and 1804 transitions. Second operand 13 states. [2020-08-19 02:39:52,634 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:52,907 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:54,790 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 02:39:55,037 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:55,292 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:55,710 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-08-19 02:39:56,806 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 195