/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:39:09,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:39:09,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:39:09,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:39:09,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:39:09,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:39:09,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:39:09,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:39:09,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:39:09,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:39:09,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:39:09,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:39:09,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:39:09,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:39:09,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:39:09,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:39:09,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:39:09,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:39:09,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:39:09,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:39:09,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:39:09,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:39:09,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:39:09,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:39:09,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:39:09,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:39:09,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:39:09,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:39:09,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:39:09,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 02:39:09,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:39:09,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:39:09,117 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:39:09,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:39:09,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:39:09,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:39:09,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:39:09,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:39:09,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:39:09,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:39:09,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:39:09,127 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 02:39:09,163 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:39:09,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:39:09,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:39:09,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:39:09,165 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:39:09,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:39:09,166 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:39:09,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:39:09,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:39:09,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:39:09,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:39:09,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:39:09,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:39:09,168 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:39:09,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:39:09,168 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:39:09,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:39:09,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:39:09,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:39:09,169 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:39:09,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:39:09,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:39:09,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:39:09,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:39:09,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:39:09,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:39:09,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:39:09,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:39:09,171 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:39:09,171 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:39:09,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:39:09,508 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:39:09,511 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:39:09,514 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:39:09,514 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:39:09,515 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product59.cil.c [2020-08-19 02:39:09,584 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6ca2c905/74c08baf44bf46a994cdcea96575f76c/FLAGefca8a44f [2020-08-19 02:39:10,114 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:39:10,115 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product59.cil.c [2020-08-19 02:39:10,127 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6ca2c905/74c08baf44bf46a994cdcea96575f76c/FLAGefca8a44f [2020-08-19 02:39:10,375 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6ca2c905/74c08baf44bf46a994cdcea96575f76c [2020-08-19 02:39:10,384 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:39:10,385 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:39:10,389 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:39:10,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:39:10,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:39:10,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:39:10" (1/1) ... [2020-08-19 02:39:10,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ea4523a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:10, skipping insertion in model container [2020-08-19 02:39:10,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:39:10" (1/1) ... [2020-08-19 02:39:10,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:39:10,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:39:10,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:39:10,958 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:39:11,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:39:11,109 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:39:11,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:11 WrapperNode [2020-08-19 02:39:11,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:39:11,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:39:11,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:39:11,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:39:11,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:11" (1/1) ... [2020-08-19 02:39:11,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:11" (1/1) ... [2020-08-19 02:39:11,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:11" (1/1) ... [2020-08-19 02:39:11,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:11" (1/1) ... [2020-08-19 02:39:11,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:11" (1/1) ... [2020-08-19 02:39:11,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:11" (1/1) ... [2020-08-19 02:39:11,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:11" (1/1) ... [2020-08-19 02:39:11,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:39:11,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:39:11,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:39:11,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:39:11,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:39:11,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:39:11,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:39:11,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 02:39:11,267 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 02:39:11,267 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 02:39:11,267 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 02:39:11,268 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 02:39:11,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-19 02:39:11,268 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 02:39:11,268 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 02:39:11,268 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 02:39:11,268 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 02:39:11,269 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 02:39:11,269 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 02:39:11,269 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 02:39:11,269 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 02:39:11,269 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 02:39:11,270 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 02:39:11,270 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 02:39:11,270 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 02:39:11,270 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 02:39:11,270 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 02:39:11,270 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 02:39:11,270 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 02:39:11,271 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 02:39:11,271 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 02:39:11,271 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:39:11,271 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 02:39:11,271 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 02:39:11,271 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 02:39:11,272 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 02:39:11,272 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 02:39:11,272 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 02:39:11,272 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 02:39:11,272 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 02:39:11,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 02:39:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 02:39:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 02:39:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 02:39:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 02:39:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 02:39:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 02:39:11,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:39:11,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:39:11,274 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 02:39:11,274 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 02:39:11,274 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 02:39:11,274 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 02:39:11,274 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 02:39:11,274 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 02:39:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 02:39:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 02:39:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-19 02:39:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 02:39:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 02:39:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 02:39:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 02:39:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 02:39:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 02:39:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 02:39:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 02:39:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 02:39:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 02:39:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 02:39:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 02:39:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 02:39:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 02:39:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 02:39:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 02:39:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 02:39:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 02:39:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 02:39:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 02:39:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 02:39:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:39:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 02:39:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 02:39:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 02:39:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:39:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 02:39:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 02:39:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 02:39:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 02:39:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 02:39:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 02:39:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:39:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 02:39:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 02:39:11,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:39:11,281 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 02:39:11,281 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 02:39:11,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:39:11,281 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 02:39:11,281 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 02:39:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 02:39:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:39:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 02:39:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:39:12,395 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:39:12,395 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 02:39:12,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:39:12 BoogieIcfgContainer [2020-08-19 02:39:12,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:39:12,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:39:12,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:39:12,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:39:12,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:39:10" (1/3) ... [2020-08-19 02:39:12,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ada651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:39:12, skipping insertion in model container [2020-08-19 02:39:12,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:11" (2/3) ... [2020-08-19 02:39:12,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ada651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:39:12, skipping insertion in model container [2020-08-19 02:39:12,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:39:12" (3/3) ... [2020-08-19 02:39:12,409 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product59.cil.c [2020-08-19 02:39:12,419 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:39:12,427 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:39:12,442 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:39:12,466 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:39:12,467 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:39:12,467 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:39:12,467 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:39:12,467 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:39:12,468 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:39:12,468 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:39:12,468 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:39:12,490 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2020-08-19 02:39:12,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 02:39:12,500 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:12,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:39:12,502 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:12,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:12,508 INFO L82 PathProgramCache]: Analyzing trace with hash -589768967, now seen corresponding path program 1 times [2020-08-19 02:39:12,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:12,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767017638] [2020-08-19 02:39:12,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:13,224 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:13,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:13,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:13,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:13,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:13,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:13,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:13,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:13,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:39:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:13,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:39:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:13,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:39:13,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767017638] [2020-08-19 02:39:13,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:39:13,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:39:13,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594607175] [2020-08-19 02:39:13,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:39:13,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:13,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:39:13,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:39:13,336 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 3 states. [2020-08-19 02:39:14,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:14,612 INFO L93 Difference]: Finished difference Result 343 states and 441 transitions. [2020-08-19 02:39:14,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:39:14,614 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 02:39:14,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:14,630 INFO L225 Difference]: With dead ends: 343 [2020-08-19 02:39:14,630 INFO L226 Difference]: Without dead ends: 185 [2020-08-19 02:39:14,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:39:14,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-08-19 02:39:14,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 149. [2020-08-19 02:39:14,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-08-19 02:39:14,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 174 transitions. [2020-08-19 02:39:14,757 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 174 transitions. Word has length 46 [2020-08-19 02:39:14,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:14,759 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 174 transitions. [2020-08-19 02:39:14,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:39:14,759 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 174 transitions. [2020-08-19 02:39:14,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 02:39:14,768 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:14,768 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:39:14,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:39:14,769 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:14,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:14,769 INFO L82 PathProgramCache]: Analyzing trace with hash -211037911, now seen corresponding path program 1 times [2020-08-19 02:39:14,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:14,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967935723] [2020-08-19 02:39:14,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:15,148 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:15,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:15,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:15,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:15,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:15,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:15,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:15,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:15,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:15,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:39:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:15,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 02:39:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:15,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:39:15,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967935723] [2020-08-19 02:39:15,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:39:15,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 02:39:15,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585289082] [2020-08-19 02:39:15,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 02:39:15,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:15,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 02:39:15,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:39:15,194 INFO L87 Difference]: Start difference. First operand 149 states and 174 transitions. Second operand 4 states. [2020-08-19 02:39:15,602 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:16,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:16,557 INFO L93 Difference]: Finished difference Result 270 states and 324 transitions. [2020-08-19 02:39:16,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 02:39:16,558 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 02:39:16,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:16,562 INFO L225 Difference]: With dead ends: 270 [2020-08-19 02:39:16,563 INFO L226 Difference]: Without dead ends: 169 [2020-08-19 02:39:16,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:39:16,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-19 02:39:16,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 140. [2020-08-19 02:39:16,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-19 02:39:16,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 162 transitions. [2020-08-19 02:39:16,623 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 162 transitions. Word has length 47 [2020-08-19 02:39:16,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:16,623 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 162 transitions. [2020-08-19 02:39:16,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 02:39:16,624 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 162 transitions. [2020-08-19 02:39:16,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 02:39:16,625 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:16,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:39:16,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:39:16,626 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:16,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:16,627 INFO L82 PathProgramCache]: Analyzing trace with hash 607971640, now seen corresponding path program 1 times [2020-08-19 02:39:16,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:16,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957967641] [2020-08-19 02:39:16,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:16,955 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:16,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:39:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:39:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:39:17,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957967641] [2020-08-19 02:39:17,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:39:17,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 02:39:17,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855752468] [2020-08-19 02:39:17,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:39:17,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:17,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:39:17,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:39:17,056 INFO L87 Difference]: Start difference. First operand 140 states and 162 transitions. Second operand 8 states. [2020-08-19 02:39:17,403 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:17,727 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:17,952 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:18,173 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:18,888 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:20,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:20,934 INFO L93 Difference]: Finished difference Result 476 states and 582 transitions. [2020-08-19 02:39:20,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 02:39:20,943 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 02:39:20,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:20,947 INFO L225 Difference]: With dead ends: 476 [2020-08-19 02:39:20,948 INFO L226 Difference]: Without dead ends: 360 [2020-08-19 02:39:20,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-19 02:39:20,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-08-19 02:39:21,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 298. [2020-08-19 02:39:21,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-08-19 02:39:21,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 356 transitions. [2020-08-19 02:39:21,033 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 356 transitions. Word has length 51 [2020-08-19 02:39:21,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:21,033 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 356 transitions. [2020-08-19 02:39:21,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:39:21,034 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 356 transitions. [2020-08-19 02:39:21,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 02:39:21,036 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:21,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:39:21,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:39:21,036 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:21,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:21,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1795694260, now seen corresponding path program 1 times [2020-08-19 02:39:21,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:21,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376340227] [2020-08-19 02:39:21,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:21,333 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:21,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:21,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:21,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:21,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:21,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:21,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:39:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:21,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:39:21,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:21,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 02:39:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:21,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:39:21,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376340227] [2020-08-19 02:39:21,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:39:21,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 02:39:21,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193946747] [2020-08-19 02:39:21,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:39:21,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:21,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:39:21,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:39:21,449 INFO L87 Difference]: Start difference. First operand 298 states and 356 transitions. Second operand 12 states. [2020-08-19 02:39:21,940 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:22,262 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:22,551 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:22,790 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:23,300 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:24,147 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:24,509 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:24,868 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:25,162 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:25,441 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:25,801 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:26,145 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:26,534 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:28,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:28,618 INFO L93 Difference]: Finished difference Result 1213 states and 1632 transitions. [2020-08-19 02:39:28,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 02:39:28,619 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-19 02:39:28,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:28,629 INFO L225 Difference]: With dead ends: 1213 [2020-08-19 02:39:28,629 INFO L226 Difference]: Without dead ends: 939 [2020-08-19 02:39:28,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-19 02:39:28,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2020-08-19 02:39:28,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 842. [2020-08-19 02:39:28,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 842 states. [2020-08-19 02:39:28,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1054 transitions. [2020-08-19 02:39:28,836 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1054 transitions. Word has length 57 [2020-08-19 02:39:28,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:28,837 INFO L479 AbstractCegarLoop]: Abstraction has 842 states and 1054 transitions. [2020-08-19 02:39:28,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:39:28,837 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1054 transitions. [2020-08-19 02:39:28,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 02:39:28,840 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:28,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:39:28,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:39:28,841 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:28,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:28,841 INFO L82 PathProgramCache]: Analyzing trace with hash 2070558330, now seen corresponding path program 1 times [2020-08-19 02:39:28,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:28,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699446538] [2020-08-19 02:39:28,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,086 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:29,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:39:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 02:39:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 02:39:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 02:39:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:39:29,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699446538] [2020-08-19 02:39:29,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:39:29,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 02:39:29,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088468326] [2020-08-19 02:39:29,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:39:29,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:29,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:39:29,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:39:29,204 INFO L87 Difference]: Start difference. First operand 842 states and 1054 transitions. Second operand 6 states. [2020-08-19 02:39:29,496 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:31,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:31,402 INFO L93 Difference]: Finished difference Result 1979 states and 2649 transitions. [2020-08-19 02:39:31,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 02:39:31,402 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-19 02:39:31,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:31,411 INFO L225 Difference]: With dead ends: 1979 [2020-08-19 02:39:31,411 INFO L226 Difference]: Without dead ends: 1161 [2020-08-19 02:39:31,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-19 02:39:31,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2020-08-19 02:39:31,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1074. [2020-08-19 02:39:31,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1074 states. [2020-08-19 02:39:31,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1340 transitions. [2020-08-19 02:39:31,682 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1340 transitions. Word has length 61 [2020-08-19 02:39:31,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:31,682 INFO L479 AbstractCegarLoop]: Abstraction has 1074 states and 1340 transitions. [2020-08-19 02:39:31,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:39:31,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1340 transitions. [2020-08-19 02:39:31,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 02:39:31,685 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:31,686 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:39:31,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:39:31,687 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:31,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:31,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1347234794, now seen corresponding path program 1 times [2020-08-19 02:39:31,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:31,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873164758] [2020-08-19 02:39:31,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,053 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:32,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:39:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:39:32,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 02:39:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 02:39:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 02:39:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 02:39:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,217 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 02:39:32,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873164758] [2020-08-19 02:39:32,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:32,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 02:39:32,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105296906] [2020-08-19 02:39:32,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:39:32,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:32,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:39:32,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:39:32,220 INFO L87 Difference]: Start difference. First operand 1074 states and 1340 transitions. Second operand 10 states. [2020-08-19 02:39:32,873 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-19 02:39:33,399 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:35,479 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:37,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:37,418 INFO L93 Difference]: Finished difference Result 2051 states and 2661 transitions. [2020-08-19 02:39:37,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 02:39:37,419 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-19 02:39:37,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:37,427 INFO L225 Difference]: With dead ends: 2051 [2020-08-19 02:39:37,427 INFO L226 Difference]: Without dead ends: 1278 [2020-08-19 02:39:37,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-19 02:39:37,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2020-08-19 02:39:37,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1181. [2020-08-19 02:39:37,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1181 states. [2020-08-19 02:39:37,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1451 transitions. [2020-08-19 02:39:37,660 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1451 transitions. Word has length 88 [2020-08-19 02:39:37,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:37,661 INFO L479 AbstractCegarLoop]: Abstraction has 1181 states and 1451 transitions. [2020-08-19 02:39:37,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:39:37,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1451 transitions. [2020-08-19 02:39:37,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-19 02:39:37,666 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:37,666 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:39:37,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:39:37,666 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:37,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:37,667 INFO L82 PathProgramCache]: Analyzing trace with hash 321074684, now seen corresponding path program 1 times [2020-08-19 02:39:37,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:37,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159188052] [2020-08-19 02:39:37,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:37,900 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:37,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:37,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:37,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:37,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:37,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:37,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:39:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:37,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:37,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:37,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 02:39:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 02:39:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 02:39:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:39:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 02:39:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-19 02:39:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,119 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 02:39:38,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159188052] [2020-08-19 02:39:38,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:38,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 02:39:38,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464249344] [2020-08-19 02:39:38,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:39:38,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:38,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:39:38,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:39:38,122 INFO L87 Difference]: Start difference. First operand 1181 states and 1451 transitions. Second operand 10 states. [2020-08-19 02:39:39,236 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:39,487 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:39:39,773 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:40,026 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:41,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:41,256 INFO L93 Difference]: Finished difference Result 2491 states and 3270 transitions. [2020-08-19 02:39:41,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 02:39:41,257 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 143 [2020-08-19 02:39:41,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:41,266 INFO L225 Difference]: With dead ends: 2491 [2020-08-19 02:39:41,266 INFO L226 Difference]: Without dead ends: 1334 [2020-08-19 02:39:41,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 02:39:41,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2020-08-19 02:39:41,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1211. [2020-08-19 02:39:41,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1211 states. [2020-08-19 02:39:41,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1485 transitions. [2020-08-19 02:39:41,531 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1485 transitions. Word has length 143 [2020-08-19 02:39:41,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:41,532 INFO L479 AbstractCegarLoop]: Abstraction has 1211 states and 1485 transitions. [2020-08-19 02:39:41,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:39:41,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1485 transitions. [2020-08-19 02:39:41,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-19 02:39:41,537 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:41,537 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:39:41,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 02:39:41,538 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:41,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:41,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1297900230, now seen corresponding path program 1 times [2020-08-19 02:39:41,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:41,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433695501] [2020-08-19 02:39:41,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:41,855 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:41,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:41,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:41,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:41,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:41,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:41,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:39:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:41,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:41,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:41,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:41,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:41,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:41,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:41,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:41,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:41,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:41,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 02:39:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:41,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:42,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 02:39:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:42,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 02:39:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:42,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:42,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:42,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:39:42,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:42,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 02:39:42,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:42,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-19 02:39:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:42,056 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 02:39:42,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433695501] [2020-08-19 02:39:42,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:42,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 02:39:42,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913299610] [2020-08-19 02:39:42,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:39:42,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:42,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:39:42,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:39:42,059 INFO L87 Difference]: Start difference. First operand 1211 states and 1485 transitions. Second operand 12 states. [2020-08-19 02:39:42,627 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:42,883 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:43,099 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:43,734 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:44,023 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:44,261 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:45,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:45,466 INFO L93 Difference]: Finished difference Result 2221 states and 2811 transitions. [2020-08-19 02:39:45,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 02:39:45,471 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 143 [2020-08-19 02:39:45,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:45,477 INFO L225 Difference]: With dead ends: 2221 [2020-08-19 02:39:45,477 INFO L226 Difference]: Without dead ends: 1034 [2020-08-19 02:39:45,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 02:39:45,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2020-08-19 02:39:45,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 978. [2020-08-19 02:39:45,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2020-08-19 02:39:45,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1184 transitions. [2020-08-19 02:39:45,650 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1184 transitions. Word has length 143 [2020-08-19 02:39:45,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:45,650 INFO L479 AbstractCegarLoop]: Abstraction has 978 states and 1184 transitions. [2020-08-19 02:39:45,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:39:45,650 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1184 transitions. [2020-08-19 02:39:45,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-19 02:39:45,654 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:45,654 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:39:45,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 02:39:45,654 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:45,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:45,655 INFO L82 PathProgramCache]: Analyzing trace with hash 183103711, now seen corresponding path program 1 times [2020-08-19 02:39:45,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:45,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398460886] [2020-08-19 02:39:45,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:45,898 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:45,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:45,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:45,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:45,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:45,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:45,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:39:45,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:45,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 02:39:45,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:45,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:45,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:45,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:45,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:45,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 02:39:46,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-19 02:39:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 02:39:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:39:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-19 02:39:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-19 02:39:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,156 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-19 02:39:46,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398460886] [2020-08-19 02:39:46,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:46,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 02:39:46,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945591979] [2020-08-19 02:39:46,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:39:46,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:46,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:39:46,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:39:46,159 INFO L87 Difference]: Start difference. First operand 978 states and 1184 transitions. Second operand 10 states. [2020-08-19 02:39:47,929 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:48,145 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:48,373 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:48,598 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:48,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:48,988 INFO L93 Difference]: Finished difference Result 1865 states and 2314 transitions. [2020-08-19 02:39:48,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 02:39:48,989 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 147 [2020-08-19 02:39:48,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:48,994 INFO L225 Difference]: With dead ends: 1865 [2020-08-19 02:39:48,995 INFO L226 Difference]: Without dead ends: 1066 [2020-08-19 02:39:48,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-08-19 02:39:48,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-08-19 02:39:49,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1010. [2020-08-19 02:39:49,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1010 states. [2020-08-19 02:39:49,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1218 transitions. [2020-08-19 02:39:49,184 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1218 transitions. Word has length 147 [2020-08-19 02:39:49,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:49,184 INFO L479 AbstractCegarLoop]: Abstraction has 1010 states and 1218 transitions. [2020-08-19 02:39:49,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:39:49,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1218 transitions. [2020-08-19 02:39:49,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-19 02:39:49,188 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:49,188 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:39:49,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 02:39:49,189 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:49,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:49,189 INFO L82 PathProgramCache]: Analyzing trace with hash -326369379, now seen corresponding path program 1 times [2020-08-19 02:39:49,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:49,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679178581] [2020-08-19 02:39:49,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:49,455 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:49,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:49,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:49,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:49,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:49,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:49,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:49,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:49,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:39:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:49,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 02:39:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:49,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:49,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:49,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:49,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:49,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:49,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:49,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:49,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:49,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:49,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:49,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:49,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 02:39:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:49,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:49,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-19 02:39:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:49,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 02:39:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:49,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:49,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:49,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:39:49,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:49,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-19 02:39:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:49,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-19 02:39:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:49,660 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-19 02:39:49,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679178581] [2020-08-19 02:39:49,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:49,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 02:39:49,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066367614] [2020-08-19 02:39:49,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:39:49,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:49,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:39:49,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:39:49,666 INFO L87 Difference]: Start difference. First operand 1010 states and 1218 transitions. Second operand 10 states. [2020-08-19 02:39:50,081 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:51,890 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:52,146 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:52,391 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:52,638 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:52,925 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:53,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:53,349 INFO L93 Difference]: Finished difference Result 1087 states and 1336 transitions. [2020-08-19 02:39:53,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 02:39:53,350 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 147 [2020-08-19 02:39:53,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:53,357 INFO L225 Difference]: With dead ends: 1087 [2020-08-19 02:39:53,358 INFO L226 Difference]: Without dead ends: 1084 [2020-08-19 02:39:53,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 02:39:53,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2020-08-19 02:39:53,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 1010. [2020-08-19 02:39:53,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1010 states. [2020-08-19 02:39:53,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1213 transitions. [2020-08-19 02:39:53,573 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1213 transitions. Word has length 147 [2020-08-19 02:39:53,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:53,574 INFO L479 AbstractCegarLoop]: Abstraction has 1010 states and 1213 transitions. [2020-08-19 02:39:53,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:39:53,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1213 transitions. [2020-08-19 02:39:53,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-19 02:39:53,577 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:53,578 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:39:53,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 02:39:53,578 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:53,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:53,579 INFO L82 PathProgramCache]: Analyzing trace with hash 154971906, now seen corresponding path program 1 times [2020-08-19 02:39:53,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:53,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [579036745] [2020-08-19 02:39:53,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:53,889 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:53,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:53,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:53,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:53,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:53,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:53,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:53,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:53,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:39:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:53,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 02:39:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:53,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:53,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:53,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:53,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:53,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 02:39:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-19 02:39:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 02:39:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:54,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:39:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-19 02:39:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 02:39:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,089 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-19 02:39:54,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [579036745] [2020-08-19 02:39:54,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:54,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 02:39:54,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97319820] [2020-08-19 02:39:54,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:39:54,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:54,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:39:54,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:39:54,092 INFO L87 Difference]: Start difference. First operand 1010 states and 1213 transitions. Second operand 12 states. [2020-08-19 02:39:54,508 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:55,050 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:55,515 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:55,783 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:56,056 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:56,282 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:56,572 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:56,847 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:58,652 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:59,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:59,377 INFO L93 Difference]: Finished difference Result 2425 states and 3146 transitions. [2020-08-19 02:39:59,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-19 02:39:59,378 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 151 [2020-08-19 02:39:59,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:59,388 INFO L225 Difference]: With dead ends: 2425 [2020-08-19 02:39:59,388 INFO L226 Difference]: Without dead ends: 1594 [2020-08-19 02:39:59,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-19 02:39:59,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2020-08-19 02:39:59,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1344. [2020-08-19 02:39:59,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1344 states. [2020-08-19 02:39:59,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 1649 transitions. [2020-08-19 02:39:59,638 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 1649 transitions. Word has length 151 [2020-08-19 02:39:59,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:59,640 INFO L479 AbstractCegarLoop]: Abstraction has 1344 states and 1649 transitions. [2020-08-19 02:39:59,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:39:59,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 1649 transitions. [2020-08-19 02:39:59,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-08-19 02:39:59,646 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:59,646 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:39:59,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 02:39:59,647 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:59,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:59,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1326265885, now seen corresponding path program 2 times [2020-08-19 02:39:59,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:59,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321739458] [2020-08-19 02:39:59,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:59,954 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:59,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:59,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:59,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:59,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:59,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:59,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:59,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:39:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:00,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 02:40:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:00,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:40:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:00,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:40:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:00,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:40:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:00,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:40:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:00,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:40:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:00,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:40:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:00,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:40:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:00,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:40:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:00,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 02:40:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:00,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:40:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:00,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-19 02:40:00,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:00,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:40:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:00,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:40:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:00,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:40:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:00,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:40:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:00,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:40:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:00,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:40:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:00,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:40:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:00,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:40:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:00,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 02:40:00,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:00,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-19 02:40:00,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:00,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:40:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:00,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:40:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:00,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:40:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:00,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:40:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:00,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-08-19 02:40:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:00,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-19 02:40:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:00,302 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 46 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-19 02:40:00,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321739458] [2020-08-19 02:40:00,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:40:00,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 02:40:00,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062383758] [2020-08-19 02:40:00,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 02:40:00,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:40:00,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 02:40:00,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-19 02:40:00,304 INFO L87 Difference]: Start difference. First operand 1344 states and 1649 transitions. Second operand 13 states. [2020-08-19 02:40:01,411 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:40:01,725 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:40:03,888 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 02:40:04,155 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:40:04,399 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:40:04,855 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-08-19 02:40:06,790 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189 [2020-08-19 02:40:07,056 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 02:40:07,339 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:40:07,605 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:40:08,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:40:08,559 INFO L93 Difference]: Finished difference Result 3585 states and 4671 transitions. [2020-08-19 02:40:08,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 02:40:08,560 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 204 [2020-08-19 02:40:08,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:40:08,574 INFO L225 Difference]: With dead ends: 3585 [2020-08-19 02:40:08,574 INFO L226 Difference]: Without dead ends: 2416 [2020-08-19 02:40:08,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 80 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=318, Invalid=1088, Unknown=0, NotChecked=0, Total=1406 [2020-08-19 02:40:08,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2020-08-19 02:40:09,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 2046. [2020-08-19 02:40:09,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2046 states. [2020-08-19 02:40:09,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2046 states to 2046 states and 2494 transitions. [2020-08-19 02:40:09,073 INFO L78 Accepts]: Start accepts. Automaton has 2046 states and 2494 transitions. Word has length 204 [2020-08-19 02:40:09,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:40:09,074 INFO L479 AbstractCegarLoop]: Abstraction has 2046 states and 2494 transitions. [2020-08-19 02:40:09,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 02:40:09,074 INFO L276 IsEmpty]: Start isEmpty. Operand 2046 states and 2494 transitions. [2020-08-19 02:40:09,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-08-19 02:40:09,082 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:40:09,084 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:40:09,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 02:40:09,085 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:40:09,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:40:09,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1092218593, now seen corresponding path program 1 times [2020-08-19 02:40:09,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:40:09,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841627785] [2020-08-19 02:40:09,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:40:09,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,362 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:40:09,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:40:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:40:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:40:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:40:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:40:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:40:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 02:40:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:40:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:40:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:40:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:40:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:40:09,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:40:09,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:40:09,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:40:09,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 02:40:09,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:40:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-19 02:40:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:40:09,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:40:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:40:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:40:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:40:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:40:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:40:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:40:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 02:40:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-19 02:40:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:40:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:40:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:40:09,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:40:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-08-19 02:40:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-19 02:40:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:09,594 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 8 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-08-19 02:40:09,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841627785] [2020-08-19 02:40:09,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:40:09,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 02:40:09,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821625283] [2020-08-19 02:40:09,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 02:40:09,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:40:09,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 02:40:09,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-19 02:40:09,596 INFO L87 Difference]: Start difference. First operand 2046 states and 2494 transitions. Second operand 13 states.