/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 05:49:05,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:49:05,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:49:05,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:49:05,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:49:05,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:49:05,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:49:05,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:49:05,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:49:05,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:49:05,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:49:05,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:49:05,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:49:05,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:49:05,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:49:05,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:49:05,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:49:05,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:49:05,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:49:05,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:49:05,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:49:05,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:49:05,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:49:05,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:49:05,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 05:49:05,977 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 05:49:05,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 05:49:05,983 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 05:49:05,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 05:49:05,984 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 05:49:05,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 05:49:05,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 05:49:05,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 05:49:05,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 05:49:05,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 05:49:05,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 05:49:05,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 05:49:05,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 05:49:05,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:49:05,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:49:05,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:49:05,993 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 05:49:06,025 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:49:06,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:49:06,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:49:06,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:49:06,027 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:49:06,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:49:06,027 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:49:06,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:49:06,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:49:06,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:49:06,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:49:06,028 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:49:06,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:49:06,029 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:49:06,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:49:06,029 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:49:06,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:49:06,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:49:06,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:49:06,030 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:49:06,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:49:06,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:49:06,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:49:06,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:49:06,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:49:06,031 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:49:06,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:49:06,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:49:06,032 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:49:06,032 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; [2020-08-19 05:49:06,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:49:06,347 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:49:06,350 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:49:06,351 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:49:06,352 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:49:06,353 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2020-08-19 05:49:06,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/510302dfd/336060ba79f548d2a6baae0629a30eb3/FLAG8075953e0 [2020-08-19 05:49:06,922 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:49:06,922 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2020-08-19 05:49:06,935 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/510302dfd/336060ba79f548d2a6baae0629a30eb3/FLAG8075953e0 [2020-08-19 05:49:07,209 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/510302dfd/336060ba79f548d2a6baae0629a30eb3 [2020-08-19 05:49:07,217 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:49:07,218 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:49:07,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:49:07,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:49:07,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:49:07,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:49:07" (1/1) ... [2020-08-19 05:49:07,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11cafb76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:07, skipping insertion in model container [2020-08-19 05:49:07,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:49:07" (1/1) ... [2020-08-19 05:49:07,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:49:07,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:49:07,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:49:07,807 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:49:07,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:49:07,960 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:49:07,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:07 WrapperNode [2020-08-19 05:49:07,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:49:07,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:49:07,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:49:07,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:49:07,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:07" (1/1) ... [2020-08-19 05:49:07,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:07" (1/1) ... [2020-08-19 05:49:07,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:07" (1/1) ... [2020-08-19 05:49:07,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:07" (1/1) ... [2020-08-19 05:49:08,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:07" (1/1) ... [2020-08-19 05:49:08,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:07" (1/1) ... [2020-08-19 05:49:08,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:07" (1/1) ... [2020-08-19 05:49:08,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:49:08,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:49:08,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:49:08,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:49:08,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:07" (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 05:49:08,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:49:08,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:49:08,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 05:49:08,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 05:49:08,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 05:49:08,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 05:49:08,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 05:49:08,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 05:49:08,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 05:49:08,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 05:49:08,114 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 05:49:08,114 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 05:49:08,114 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 05:49:08,115 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 05:49:08,115 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 05:49:08,116 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 05:49:08,116 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 05:49:08,116 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 05:49:08,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 05:49:08,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 05:49:08,117 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 05:49:08,117 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 05:49:08,117 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 05:49:08,118 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 05:49:08,119 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 05:49:08,120 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 05:49:08,120 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 05:49:08,120 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 05:49:08,120 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 05:49:08,121 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 05:49:08,121 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 05:49:08,121 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 05:49:08,121 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 05:49:08,121 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 05:49:08,121 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 05:49:08,122 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 05:49:08,122 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 05:49:08,122 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 05:49:08,122 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 05:49:08,122 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 05:49:08,122 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 05:49:08,122 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 05:49:08,122 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 05:49:08,123 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:49:08,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:49:08,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 05:49:08,123 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 05:49:08,123 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 05:49:08,123 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 05:49:08,123 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 05:49:08,123 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 05:49:08,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 05:49:08,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 05:49:08,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 05:49:08,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 05:49:08,124 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 05:49:08,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 05:49:08,124 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 05:49:08,124 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 05:49:08,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 05:49:08,125 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 05:49:08,125 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 05:49:08,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 05:49:08,125 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 05:49:08,125 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 05:49:08,125 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 05:49:08,125 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 05:49:08,125 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 05:49:08,125 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 05:49:08,125 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 05:49:08,126 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 05:49:08,126 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 05:49:08,126 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 05:49:08,126 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 05:49:08,126 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 05:49:08,126 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 05:49:08,127 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 05:49:08,127 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 05:49:08,127 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 05:49:08,127 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 05:49:08,127 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 05:49:08,127 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 05:49:08,127 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 05:49:08,128 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 05:49:08,128 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 05:49:08,128 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 05:49:08,128 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 05:49:08,128 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 05:49:08,128 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 05:49:08,128 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 05:49:08,129 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 05:49:08,129 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 05:49:08,129 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 05:49:08,129 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 05:49:08,129 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 05:49:08,129 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 05:49:08,129 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 05:49:08,129 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 05:49:08,129 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:49:08,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:49:08,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 05:49:08,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:49:09,239 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:49:09,240 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 05:49:09,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:49:09 BoogieIcfgContainer [2020-08-19 05:49:09,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:49:09,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:49:09,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:49:09,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:49:09,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:49:07" (1/3) ... [2020-08-19 05:49:09,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ffef8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:49:09, skipping insertion in model container [2020-08-19 05:49:09,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:07" (2/3) ... [2020-08-19 05:49:09,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ffef8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:49:09, skipping insertion in model container [2020-08-19 05:49:09,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:49:09" (3/3) ... [2020-08-19 05:49:09,258 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product56.cil.c [2020-08-19 05:49:09,267 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:49:09,276 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:49:09,291 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:49:09,312 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:49:09,312 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:49:09,313 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:49:09,313 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:49:09,313 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:49:09,313 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:49:09,314 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:49:09,314 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:49:09,335 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states. [2020-08-19 05:49:09,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 05:49:09,346 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:49:09,347 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 05:49:09,348 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:49:09,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:49:09,354 INFO L82 PathProgramCache]: Analyzing trace with hash -453171886, now seen corresponding path program 1 times [2020-08-19 05:49:09,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:49:09,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472770160] [2020-08-19 05:49:09,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:49:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:10,051 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:49:10,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:49:10,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:10,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:49:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:10,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:49:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:10,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:49:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:10,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:49:10,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:10,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:49:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:10,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 05:49:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:10,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 05:49:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:10,201 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 05:49:10,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472770160] [2020-08-19 05:49:10,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:49:10,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:49:10,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238888496] [2020-08-19 05:49:10,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:49:10,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:49:10,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:49:10,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:49:10,234 INFO L87 Difference]: Start difference. First operand 201 states. Second operand 4 states. [2020-08-19 05:49:11,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:49:11,538 INFO L93 Difference]: Finished difference Result 353 states and 461 transitions. [2020-08-19 05:49:11,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 05:49:11,540 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 05:49:11,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:49:11,555 INFO L225 Difference]: With dead ends: 353 [2020-08-19 05:49:11,556 INFO L226 Difference]: Without dead ends: 196 [2020-08-19 05:49:11,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:49:11,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-19 05:49:11,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 158. [2020-08-19 05:49:11,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-08-19 05:49:11,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 188 transitions. [2020-08-19 05:49:11,661 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 188 transitions. Word has length 51 [2020-08-19 05:49:11,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:49:11,662 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 188 transitions. [2020-08-19 05:49:11,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:49:11,662 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 188 transitions. [2020-08-19 05:49:11,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 05:49:11,666 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:49:11,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:49:11,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:49:11,666 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:49:11,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:49:11,667 INFO L82 PathProgramCache]: Analyzing trace with hash 23130160, now seen corresponding path program 1 times [2020-08-19 05:49:11,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:49:11,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455360980] [2020-08-19 05:49:11,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:49:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:12,012 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:49:12,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:49:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:12,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:49:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:12,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:49:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:12,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:49:12,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:12,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:49:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:12,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:49:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:12,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:49:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:12,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 05:49:12,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:12,085 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 05:49:12,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455360980] [2020-08-19 05:49:12,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:49:12,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 05:49:12,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164615791] [2020-08-19 05:49:12,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 05:49:12,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:49:12,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 05:49:12,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:49:12,089 INFO L87 Difference]: Start difference. First operand 158 states and 188 transitions. Second operand 5 states. [2020-08-19 05:49:12,503 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:49:13,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:49:13,534 INFO L93 Difference]: Finished difference Result 288 states and 360 transitions. [2020-08-19 05:49:13,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 05:49:13,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 05:49:13,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:49:13,540 INFO L225 Difference]: With dead ends: 288 [2020-08-19 05:49:13,540 INFO L226 Difference]: Without dead ends: 186 [2020-08-19 05:49:13,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 05:49:13,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-19 05:49:13,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 149. [2020-08-19 05:49:13,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-08-19 05:49:13,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 176 transitions. [2020-08-19 05:49:13,587 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 176 transitions. Word has length 52 [2020-08-19 05:49:13,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:49:13,588 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 176 transitions. [2020-08-19 05:49:13,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 05:49:13,588 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 176 transitions. [2020-08-19 05:49:13,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 05:49:13,591 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:49:13,591 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 05:49:13,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:49:13,592 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:49:13,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:49:13,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1418292754, now seen corresponding path program 1 times [2020-08-19 05:49:13,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:49:13,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6876784] [2020-08-19 05:49:13,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:49:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:13,933 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:49:13,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:49:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:13,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:49:13,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:13,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:49:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:13,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:49:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:13,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:49:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:14,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:49:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:14,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 05:49:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:14,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 05:49:14,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:14,047 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 05:49:14,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6876784] [2020-08-19 05:49:14,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:49:14,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 05:49:14,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48774658] [2020-08-19 05:49:14,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 05:49:14,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:49:14,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 05:49:14,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 05:49:14,058 INFO L87 Difference]: Start difference. First operand 149 states and 176 transitions. Second operand 9 states. [2020-08-19 05:49:14,390 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:49:14,678 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:49:14,937 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:49:15,158 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:49:15,933 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:49:18,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:49:18,151 INFO L93 Difference]: Finished difference Result 503 states and 637 transitions. [2020-08-19 05:49:18,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 05:49:18,152 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-19 05:49:18,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:49:18,164 INFO L225 Difference]: With dead ends: 503 [2020-08-19 05:49:18,164 INFO L226 Difference]: Without dead ends: 382 [2020-08-19 05:49:18,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-19 05:49:18,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-08-19 05:49:18,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 309. [2020-08-19 05:49:18,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-08-19 05:49:18,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 378 transitions. [2020-08-19 05:49:18,300 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 378 transitions. Word has length 57 [2020-08-19 05:49:18,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:49:18,300 INFO L479 AbstractCegarLoop]: Abstraction has 309 states and 378 transitions. [2020-08-19 05:49:18,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 05:49:18,300 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 378 transitions. [2020-08-19 05:49:18,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-19 05:49:18,303 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:49:18,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:49:18,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 05:49:18,304 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:49:18,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:49:18,304 INFO L82 PathProgramCache]: Analyzing trace with hash -335998659, now seen corresponding path program 1 times [2020-08-19 05:49:18,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:49:18,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705883152] [2020-08-19 05:49:18,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:49:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:18,615 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:49:18,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:49:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:18,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:49:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:18,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:49:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:18,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:49:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:18,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:49:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:18,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:49:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:18,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:49:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:18,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:49:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:18,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 05:49:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:18,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:49:18,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705883152] [2020-08-19 05:49:18,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:49:18,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 05:49:18,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430470591] [2020-08-19 05:49:18,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 05:49:18,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:49:18,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 05:49:18,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 05:49:18,742 INFO L87 Difference]: Start difference. First operand 309 states and 378 transitions. Second operand 9 states. [2020-08-19 05:49:19,076 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:49:20,050 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:49:20,494 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:49:20,725 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:49:21,000 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:49:22,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:49:22,742 INFO L93 Difference]: Finished difference Result 992 states and 1314 transitions. [2020-08-19 05:49:22,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 05:49:22,742 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-19 05:49:22,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:49:22,748 INFO L225 Difference]: With dead ends: 992 [2020-08-19 05:49:22,749 INFO L226 Difference]: Without dead ends: 711 [2020-08-19 05:49:22,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 05:49:22,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2020-08-19 05:49:22,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 566. [2020-08-19 05:49:22,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2020-08-19 05:49:22,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 696 transitions. [2020-08-19 05:49:22,874 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 696 transitions. Word has length 62 [2020-08-19 05:49:22,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:49:22,874 INFO L479 AbstractCegarLoop]: Abstraction has 566 states and 696 transitions. [2020-08-19 05:49:22,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 05:49:22,874 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 696 transitions. [2020-08-19 05:49:22,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-19 05:49:22,878 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:49:22,878 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:49:22,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 05:49:22,879 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:49:22,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:49:22,879 INFO L82 PathProgramCache]: Analyzing trace with hash 563759321, now seen corresponding path program 1 times [2020-08-19 05:49:22,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:49:22,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922135096] [2020-08-19 05:49:22,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:49:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:23,143 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:49:23,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:49:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:23,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:49:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:23,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:49:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:23,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:49:23,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:23,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:49:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:23,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:49:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:23,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 05:49:23,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:23,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 05:49:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:23,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 05:49:23,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:23,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-19 05:49:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:23,276 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 05:49:23,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922135096] [2020-08-19 05:49:23,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:49:23,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 05:49:23,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043287012] [2020-08-19 05:49:23,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 05:49:23,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:49:23,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 05:49:23,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:49:23,281 INFO L87 Difference]: Start difference. First operand 566 states and 696 transitions. Second operand 10 states. [2020-08-19 05:49:23,645 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:49:24,699 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:49:24,963 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:49:25,208 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:49:25,890 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:49:27,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:49:27,323 INFO L93 Difference]: Finished difference Result 1565 states and 2138 transitions. [2020-08-19 05:49:27,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-19 05:49:27,323 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-19 05:49:27,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:49:27,335 INFO L225 Difference]: With dead ends: 1565 [2020-08-19 05:49:27,335 INFO L226 Difference]: Without dead ends: 1027 [2020-08-19 05:49:27,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-19 05:49:27,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2020-08-19 05:49:27,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 821. [2020-08-19 05:49:27,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-08-19 05:49:27,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 999 transitions. [2020-08-19 05:49:27,531 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 999 transitions. Word has length 66 [2020-08-19 05:49:27,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:49:27,533 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 999 transitions. [2020-08-19 05:49:27,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 05:49:27,533 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 999 transitions. [2020-08-19 05:49:27,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-19 05:49:27,538 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:49:27,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:49:27,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 05:49:27,539 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:49:27,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:49:27,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1340944239, now seen corresponding path program 1 times [2020-08-19 05:49:27,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:49:27,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598961032] [2020-08-19 05:49:27,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:49:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:27,802 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:49:27,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:49:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:27,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:49:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:27,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:49:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:27,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:49:27,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:27,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:49:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:27,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:49:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:27,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 05:49:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:27,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 05:49:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:27,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:27,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:27,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:27,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:27,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:49:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:27,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:49:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:27,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 05:49:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:27,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 05:49:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:27,986 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 05:49:27,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598961032] [2020-08-19 05:49:27,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:49:27,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 05:49:27,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847409733] [2020-08-19 05:49:27,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 05:49:27,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:49:27,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 05:49:27,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:49:27,992 INFO L87 Difference]: Start difference. First operand 821 states and 999 transitions. Second operand 10 states. [2020-08-19 05:49:29,125 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:49:29,365 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 05:49:29,624 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:49:29,884 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:49:31,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:49:31,234 INFO L93 Difference]: Finished difference Result 1894 states and 2518 transitions. [2020-08-19 05:49:31,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 05:49:31,235 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-08-19 05:49:31,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:49:31,244 INFO L225 Difference]: With dead ends: 1894 [2020-08-19 05:49:31,244 INFO L226 Difference]: Without dead ends: 1101 [2020-08-19 05:49:31,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 05:49:31,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-08-19 05:49:31,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 847. [2020-08-19 05:49:31,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-08-19 05:49:31,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1027 transitions. [2020-08-19 05:49:31,432 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1027 transitions. Word has length 94 [2020-08-19 05:49:31,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:49:31,432 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1027 transitions. [2020-08-19 05:49:31,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 05:49:31,433 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1027 transitions. [2020-08-19 05:49:31,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-19 05:49:31,435 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:49:31,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:49:31,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 05:49:31,436 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:49:31,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:49:31,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1413330797, now seen corresponding path program 1 times [2020-08-19 05:49:31,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:49:31,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898249283] [2020-08-19 05:49:31,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:49:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:31,683 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:49:31,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:49:31,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:31,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:49:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:31,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:49:31,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:31,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:49:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:31,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:49:31,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:31,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:49:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:31,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 05:49:31,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:31,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 05:49:31,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:31,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:31,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:31,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:31,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:49:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:31,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:49:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:31,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 05:49:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:31,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 05:49:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:31,842 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 05:49:31,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898249283] [2020-08-19 05:49:31,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:49:31,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 05:49:31,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697356089] [2020-08-19 05:49:31,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 05:49:31,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:49:31,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 05:49:31,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:49:31,848 INFO L87 Difference]: Start difference. First operand 847 states and 1027 transitions. Second operand 12 states. [2020-08-19 05:49:32,292 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:49:32,522 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:49:32,754 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:49:33,560 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:49:33,819 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:49:34,092 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:49:35,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:49:35,701 INFO L93 Difference]: Finished difference Result 1948 states and 2635 transitions. [2020-08-19 05:49:35,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 05:49:35,702 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-08-19 05:49:35,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:49:35,710 INFO L225 Difference]: With dead ends: 1948 [2020-08-19 05:49:35,710 INFO L226 Difference]: Without dead ends: 1129 [2020-08-19 05:49:35,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-19 05:49:35,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2020-08-19 05:49:35,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 863. [2020-08-19 05:49:35,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2020-08-19 05:49:35,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1043 transitions. [2020-08-19 05:49:35,936 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1043 transitions. Word has length 94 [2020-08-19 05:49:35,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:49:35,937 INFO L479 AbstractCegarLoop]: Abstraction has 863 states and 1043 transitions. [2020-08-19 05:49:35,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 05:49:35,937 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1043 transitions. [2020-08-19 05:49:35,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-19 05:49:35,939 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:49:35,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:49:35,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 05:49:35,940 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:49:35,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:49:35,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1083565036, now seen corresponding path program 1 times [2020-08-19 05:49:35,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:49:35,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348658600] [2020-08-19 05:49:35,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:49:35,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:36,187 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:49:36,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:49:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:36,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:49:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:36,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:49:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:36,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:49:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:36,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:49:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:36,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:49:36,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:36,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 05:49:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:36,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 05:49:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:36,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:36,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:36,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:36,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:49:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:36,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:49:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:36,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 05:49:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:36,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 05:49:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:36,374 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 05:49:36,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348658600] [2020-08-19 05:49:36,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:49:36,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:49:36,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250741352] [2020-08-19 05:49:36,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:49:36,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:49:36,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:49:36,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:49:36,377 INFO L87 Difference]: Start difference. First operand 863 states and 1043 transitions. Second operand 8 states. [2020-08-19 05:49:36,732 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:49:37,244 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:49:40,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:49:40,237 INFO L93 Difference]: Finished difference Result 2919 states and 3977 transitions. [2020-08-19 05:49:40,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 05:49:40,238 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-19 05:49:40,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:49:40,255 INFO L225 Difference]: With dead ends: 2919 [2020-08-19 05:49:40,255 INFO L226 Difference]: Without dead ends: 2084 [2020-08-19 05:49:40,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-19 05:49:40,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2020-08-19 05:49:40,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 1727. [2020-08-19 05:49:40,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1727 states. [2020-08-19 05:49:40,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2109 transitions. [2020-08-19 05:49:40,658 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2109 transitions. Word has length 94 [2020-08-19 05:49:40,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:49:40,658 INFO L479 AbstractCegarLoop]: Abstraction has 1727 states and 2109 transitions. [2020-08-19 05:49:40,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:49:40,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2109 transitions. [2020-08-19 05:49:40,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-19 05:49:40,662 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:49:40,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:49:40,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 05:49:40,663 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:49:40,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:49:40,663 INFO L82 PathProgramCache]: Analyzing trace with hash -452793586, now seen corresponding path program 1 times [2020-08-19 05:49:40,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:49:40,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766342] [2020-08-19 05:49:40,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:49:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:40,920 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:49:40,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:49:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:40,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:49:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:40,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:49:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:40,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:49:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:40,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:49:40,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:40,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:49:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:40,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:49:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:40,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 05:49:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:41,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 05:49:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:41,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:41,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:41,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:41,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:49:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:41,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:49:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:41,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 05:49:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:41,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 05:49:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:41,039 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 05:49:41,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766342] [2020-08-19 05:49:41,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:49:41,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:49:41,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674209699] [2020-08-19 05:49:41,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:49:41,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:49:41,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:49:41,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:49:41,041 INFO L87 Difference]: Start difference. First operand 1727 states and 2109 transitions. Second operand 8 states. [2020-08-19 05:49:41,363 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:49:44,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:49:44,438 INFO L93 Difference]: Finished difference Result 3491 states and 4776 transitions. [2020-08-19 05:49:44,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 05:49:44,438 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-08-19 05:49:44,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:49:44,461 INFO L225 Difference]: With dead ends: 3491 [2020-08-19 05:49:44,461 INFO L226 Difference]: Without dead ends: 3488 [2020-08-19 05:49:44,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-19 05:49:44,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2020-08-19 05:49:45,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 2882. [2020-08-19 05:49:45,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2882 states. [2020-08-19 05:49:45,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 3603 transitions. [2020-08-19 05:49:45,119 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 3603 transitions. Word has length 98 [2020-08-19 05:49:45,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:49:45,120 INFO L479 AbstractCegarLoop]: Abstraction has 2882 states and 3603 transitions. [2020-08-19 05:49:45,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:49:45,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 3603 transitions. [2020-08-19 05:49:45,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-08-19 05:49:45,130 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:49:45,131 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 05:49:45,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 05:49:45,131 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:49:45,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:49:45,132 INFO L82 PathProgramCache]: Analyzing trace with hash 64107295, now seen corresponding path program 1 times [2020-08-19 05:49:45,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:49:45,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887816584] [2020-08-19 05:49:45,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:49:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:45,485 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:49:45,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:49:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:45,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:49:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:45,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:49:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:45,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:49:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:45,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:49:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:45,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:49:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:45,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:49:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:45,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 05:49:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:45,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 05:49:45,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:45,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:45,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:45,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:45,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:45,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:45,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:49:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:45,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:49:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:45,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 05:49:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:45,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:49:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:45,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 05:49:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:45,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-19 05:49:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:45,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 05:49:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:45,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:45,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:49:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:45,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 05:49:45,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:45,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:45,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:45,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:49:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:45,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:49:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:45,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-19 05:49:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:45,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-08-19 05:49:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:45,833 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-08-19 05:49:45,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887816584] [2020-08-19 05:49:45,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:49:45,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 05:49:45,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126026248] [2020-08-19 05:49:45,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 05:49:45,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:49:45,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 05:49:45,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-08-19 05:49:45,836 INFO L87 Difference]: Start difference. First operand 2882 states and 3603 transitions. Second operand 15 states. [2020-08-19 05:49:46,374 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:49:46,602 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:49:46,824 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:49:47,423 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:49:47,729 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:49:48,068 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:49:50,059 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:49:50,365 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:49:53,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:49:53,520 INFO L93 Difference]: Finished difference Result 5959 states and 7714 transitions. [2020-08-19 05:49:53,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-08-19 05:49:53,520 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 177 [2020-08-19 05:49:53,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:49:53,538 INFO L225 Difference]: With dead ends: 5959 [2020-08-19 05:49:53,538 INFO L226 Difference]: Without dead ends: 3105 [2020-08-19 05:49:53,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1667 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=800, Invalid=4170, Unknown=0, NotChecked=0, Total=4970 [2020-08-19 05:49:53,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3105 states. [2020-08-19 05:49:54,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3105 to 2718. [2020-08-19 05:49:54,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2718 states. [2020-08-19 05:49:54,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2718 states to 2718 states and 3154 transitions. [2020-08-19 05:49:54,144 INFO L78 Accepts]: Start accepts. Automaton has 2718 states and 3154 transitions. Word has length 177 [2020-08-19 05:49:54,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:49:54,144 INFO L479 AbstractCegarLoop]: Abstraction has 2718 states and 3154 transitions. [2020-08-19 05:49:54,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 05:49:54,145 INFO L276 IsEmpty]: Start isEmpty. Operand 2718 states and 3154 transitions. [2020-08-19 05:49:54,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-08-19 05:49:54,152 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:49:54,152 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:49:54,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 05:49:54,153 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:49:54,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:49:54,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1460495039, now seen corresponding path program 1 times [2020-08-19 05:49:54,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:49:54,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176014024] [2020-08-19 05:49:54,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:49:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:54,435 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:49:54,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:49:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:54,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:49:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:54,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:49:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:54,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:49:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:54,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:49:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:54,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:49:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:54,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:49:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:54,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 05:49:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:54,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 05:49:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:54,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:54,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:54,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:54,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:54,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:54,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:49:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:54,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:49:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:54,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 05:49:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:54,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:49:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:54,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 05:49:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:54,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 05:49:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:54,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:49:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:54,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-19 05:49:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:54,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:54,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:54,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:54,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:54,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:49:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:54,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:49:54,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:54,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-08-19 05:49:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:54,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-19 05:49:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:54,612 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-08-19 05:49:54,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176014024] [2020-08-19 05:49:54,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:49:54,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 05:49:54,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981327316] [2020-08-19 05:49:54,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 05:49:54,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:49:54,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 05:49:54,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:49:54,617 INFO L87 Difference]: Start difference. First operand 2718 states and 3154 transitions. Second operand 10 states. [2020-08-19 05:49:55,447 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:49:57,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:49:57,731 INFO L93 Difference]: Finished difference Result 4518 states and 5459 transitions. [2020-08-19 05:49:57,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-08-19 05:49:57,731 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 171 [2020-08-19 05:49:57,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:49:57,742 INFO L225 Difference]: With dead ends: 4518 [2020-08-19 05:49:57,742 INFO L226 Difference]: Without dead ends: 1828 [2020-08-19 05:49:57,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=354, Invalid=1128, Unknown=0, NotChecked=0, Total=1482 [2020-08-19 05:49:57,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2020-08-19 05:49:57,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1247. [2020-08-19 05:49:57,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1247 states. [2020-08-19 05:49:57,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1429 transitions. [2020-08-19 05:49:57,984 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1429 transitions. Word has length 171 [2020-08-19 05:49:57,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:49:57,985 INFO L479 AbstractCegarLoop]: Abstraction has 1247 states and 1429 transitions. [2020-08-19 05:49:57,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 05:49:57,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1429 transitions. [2020-08-19 05:49:57,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-08-19 05:49:57,989 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:49:57,990 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:49:57,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 05:49:57,990 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:49:57,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:49:57,990 INFO L82 PathProgramCache]: Analyzing trace with hash 177222806, now seen corresponding path program 1 times [2020-08-19 05:49:57,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:49:57,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675208479] [2020-08-19 05:49:57,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:49:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:58,288 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:49:58,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:49:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:58,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:49:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:58,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:49:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:58,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:49:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:58,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:49:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:58,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:49:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:58,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:49:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:58,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 05:49:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:58,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 05:49:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:58,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:58,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:58,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:58,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:58,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:49:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:58,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:49:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:58,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 05:49:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:58,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:49:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:58,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 05:49:58,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:58,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-19 05:49:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:58,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 05:49:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:58,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:58,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:49:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:58,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 05:49:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:58,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:58,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:49:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:58,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:49:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:58,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:58,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-19 05:49:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:58,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-19 05:49:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:58,720 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-19 05:49:58,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675208479] [2020-08-19 05:49:58,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:49:58,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 05:49:58,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134968932] [2020-08-19 05:49:58,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 05:49:58,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:49:58,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 05:49:58,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-19 05:49:58,723 INFO L87 Difference]: Start difference. First operand 1247 states and 1429 transitions. Second operand 19 states. [2020-08-19 05:49:59,393 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:49:59,895 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:50:00,120 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:50:00,341 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:50:01,092 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:50:01,705 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:50:02,142 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:50:04,480 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:50:04,758 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:50:05,039 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:50:05,292 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191