/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 05:55:52,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:55:52,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:55:52,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:55:52,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:55:52,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:55:52,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:55:52,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:55:52,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:55:52,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:55:52,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:55:52,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:55:52,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:55:52,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:55:52,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:55:52,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:55:52,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:55:52,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:55:52,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:55:52,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:55:52,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:55:52,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:55:52,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:55:52,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:55:52,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 05:55:52,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 05:55:52,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 05:55:52,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 05:55:52,129 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 05:55:52,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 05:55:52,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 05:55:52,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 05:55:52,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 05:55:52,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 05:55:52,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 05:55:52,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 05:55:52,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 05:55:52,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 05:55:52,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:55:52,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:55:52,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:55:52,138 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 05:55:52,162 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:55:52,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:55:52,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:55:52,166 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:55:52,167 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:55:52,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:55:52,167 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:55:52,167 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:55:52,167 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:55:52,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:55:52,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:55:52,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:55:52,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:55:52,168 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:55:52,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:55:52,168 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:55:52,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:55:52,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:55:52,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:55:52,169 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:55:52,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:55:52,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:55:52,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:55:52,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:55:52,171 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:55:52,172 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:55:52,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:55:52,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:55:52,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:55:52,172 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; [2020-08-19 05:55:52,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:55:52,496 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:55:52,501 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:55:52,503 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:55:52,505 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:55:52,506 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product61.cil.c [2020-08-19 05:55:52,579 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7141d7778/352a99f2a7a245239b19df142c485fd8/FLAG3111173e9 [2020-08-19 05:55:53,063 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:55:53,064 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product61.cil.c [2020-08-19 05:55:53,080 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7141d7778/352a99f2a7a245239b19df142c485fd8/FLAG3111173e9 [2020-08-19 05:55:53,416 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7141d7778/352a99f2a7a245239b19df142c485fd8 [2020-08-19 05:55:53,424 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:55:53,426 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:55:53,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:55:53,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:55:53,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:55:53,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:55:53" (1/1) ... [2020-08-19 05:55:53,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20abf48c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:53, skipping insertion in model container [2020-08-19 05:55:53,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:55:53" (1/1) ... [2020-08-19 05:55:53,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:55:53,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:55:53,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:55:53,919 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:55:54,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:55:54,072 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:55:54,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:54 WrapperNode [2020-08-19 05:55:54,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:55:54,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:55:54,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:55:54,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:55:54,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:54" (1/1) ... [2020-08-19 05:55:54,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:54" (1/1) ... [2020-08-19 05:55:54,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:54" (1/1) ... [2020-08-19 05:55:54,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:54" (1/1) ... [2020-08-19 05:55:54,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:54" (1/1) ... [2020-08-19 05:55:54,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:54" (1/1) ... [2020-08-19 05:55:54,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:54" (1/1) ... [2020-08-19 05:55:54,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:55:54,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:55:54,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:55:54,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:55:54,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:55:54,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:55:54,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:55:54,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 05:55:54,241 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 05:55:54,241 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 05:55:54,241 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 05:55:54,241 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 05:55:54,241 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 05:55:54,241 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 05:55:54,242 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 05:55:54,242 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 05:55:54,242 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 05:55:54,242 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 05:55:54,242 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 05:55:54,242 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 05:55:54,243 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 05:55:54,243 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 05:55:54,243 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 05:55:54,243 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 05:55:54,243 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 05:55:54,243 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 05:55:54,243 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 05:55:54,244 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 05:55:54,244 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 05:55:54,244 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 05:55:54,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 05:55:54,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 05:55:54,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 05:55:54,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 05:55:54,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 05:55:54,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 05:55:54,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-19 05:55:54,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-19 05:55:54,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-19 05:55:54,245 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 05:55:54,246 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 05:55:54,246 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 05:55:54,246 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 05:55:54,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 05:55:54,246 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 05:55:54,246 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 05:55:54,247 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 05:55:54,247 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 05:55:54,247 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:55:54,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:55:54,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 05:55:54,248 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 05:55:54,248 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 05:55:54,248 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 05:55:54,248 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 05:55:54,248 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 05:55:54,248 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 05:55:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 05:55:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 05:55:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 05:55:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 05:55:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 05:55:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 05:55:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 05:55:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 05:55:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 05:55:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-19 05:55:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-19 05:55:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 05:55:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 05:55:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 05:55:54,251 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 05:55:54,251 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 05:55:54,251 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 05:55:54,251 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 05:55:54,251 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 05:55:54,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 05:55:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 05:55:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 05:55:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 05:55:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 05:55:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 05:55:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 05:55:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 05:55:54,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 05:55:54,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 05:55:54,253 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 05:55:54,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 05:55:54,253 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 05:55:54,253 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 05:55:54,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 05:55:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 05:55:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 05:55:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 05:55:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 05:55:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-19 05:55:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 05:55:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 05:55:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 05:55:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 05:55:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 05:55:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 05:55:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 05:55:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:55:54,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:55:54,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 05:55:54,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:55:55,370 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:55:55,370 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 05:55:55,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:55:55 BoogieIcfgContainer [2020-08-19 05:55:55,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:55:55,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:55:55,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:55:55,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:55:55,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:55:53" (1/3) ... [2020-08-19 05:55:55,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24cebf9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:55:55, skipping insertion in model container [2020-08-19 05:55:55,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:54" (2/3) ... [2020-08-19 05:55:55,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24cebf9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:55:55, skipping insertion in model container [2020-08-19 05:55:55,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:55:55" (3/3) ... [2020-08-19 05:55:55,384 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product61.cil.c [2020-08-19 05:55:55,396 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:55:55,405 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:55:55,420 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:55:55,448 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:55:55,448 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:55:55,448 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:55:55,448 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:55:55,449 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:55:55,449 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:55:55,449 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:55:55,449 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:55:55,474 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2020-08-19 05:55:55,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 05:55:55,486 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:55:55,487 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:55:55,487 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:55:55,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:55:55,494 INFO L82 PathProgramCache]: Analyzing trace with hash -748532366, now seen corresponding path program 1 times [2020-08-19 05:55:55,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:55:55,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133057550] [2020-08-19 05:55:55,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:55:55,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:56,156 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:55:56,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:55:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:56,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:55:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:56,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:55:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:56,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:55:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:56,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:55:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:56,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:55:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:56,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:55:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:56,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:55:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:56,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 05:55:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:56,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 05:55:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:56,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 05:55:56,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133057550] [2020-08-19 05:55:56,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:55:56,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:55:56,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352957089] [2020-08-19 05:55:56,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:55:56,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:55:56,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:55:56,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:55:56,302 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 4 states. [2020-08-19 05:55:57,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:55:57,379 INFO L93 Difference]: Finished difference Result 357 states and 456 transitions. [2020-08-19 05:55:57,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 05:55:57,381 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 05:55:57,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:55:57,397 INFO L225 Difference]: With dead ends: 357 [2020-08-19 05:55:57,397 INFO L226 Difference]: Without dead ends: 195 [2020-08-19 05:55:57,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:55:57,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-08-19 05:55:57,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 163. [2020-08-19 05:55:57,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-08-19 05:55:57,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 193 transitions. [2020-08-19 05:55:57,515 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 193 transitions. Word has length 59 [2020-08-19 05:55:57,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:55:57,516 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 193 transitions. [2020-08-19 05:55:57,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:55:57,516 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 193 transitions. [2020-08-19 05:55:57,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-19 05:55:57,520 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:55:57,520 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:55:57,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:55:57,521 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:55:57,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:55:57,522 INFO L82 PathProgramCache]: Analyzing trace with hash -733015768, now seen corresponding path program 1 times [2020-08-19 05:55:57,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:55:57,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830481551] [2020-08-19 05:55:57,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:55:57,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:57,897 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:55:57,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:55:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:57,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:55:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:57,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:55:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:57,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:55:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:57,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:55:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:57,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:55:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:57,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:55:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:57,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:55:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:57,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 05:55:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:57,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 05:55:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:57,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 05:55:57,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830481551] [2020-08-19 05:55:57,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:55:57,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 05:55:57,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819831453] [2020-08-19 05:55:57,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 05:55:57,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:55:57,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 05:55:57,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 05:55:57,996 INFO L87 Difference]: Start difference. First operand 163 states and 193 transitions. Second operand 9 states. [2020-08-19 05:55:58,395 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:55:58,768 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:55:59,040 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:55:59,265 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:56:00,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:56:00,839 INFO L93 Difference]: Finished difference Result 330 states and 411 transitions. [2020-08-19 05:56:00,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 05:56:00,841 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-19 05:56:00,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:56:00,847 INFO L225 Difference]: With dead ends: 330 [2020-08-19 05:56:00,849 INFO L226 Difference]: Without dead ends: 195 [2020-08-19 05:56:00,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 05:56:00,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-08-19 05:56:00,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 163. [2020-08-19 05:56:00,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-08-19 05:56:00,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 192 transitions. [2020-08-19 05:56:00,912 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 192 transitions. Word has length 64 [2020-08-19 05:56:00,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:56:00,912 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 192 transitions. [2020-08-19 05:56:00,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 05:56:00,913 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 192 transitions. [2020-08-19 05:56:00,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-19 05:56:00,916 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:56:00,917 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:56:00,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:56:00,917 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:56:00,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:56:00,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1142393912, now seen corresponding path program 1 times [2020-08-19 05:56:00,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:56:00,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819066026] [2020-08-19 05:56:00,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:56:00,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,247 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:56:01,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:56:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:56:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:56:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 05:56:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 05:56:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-19 05:56:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 05:56:01,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:01,336 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 05:56:01,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819066026] [2020-08-19 05:56:01,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:56:01,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 05:56:01,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932432605] [2020-08-19 05:56:01,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 05:56:01,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:56:01,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 05:56:01,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:56:01,339 INFO L87 Difference]: Start difference. First operand 163 states and 192 transitions. Second operand 6 states. [2020-08-19 05:56:01,831 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:03,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:56:03,068 INFO L93 Difference]: Finished difference Result 317 states and 394 transitions. [2020-08-19 05:56:03,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 05:56:03,069 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-08-19 05:56:03,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:56:03,072 INFO L225 Difference]: With dead ends: 317 [2020-08-19 05:56:03,072 INFO L226 Difference]: Without dead ends: 200 [2020-08-19 05:56:03,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:56:03,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-08-19 05:56:03,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 154. [2020-08-19 05:56:03,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-08-19 05:56:03,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 180 transitions. [2020-08-19 05:56:03,113 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 180 transitions. Word has length 78 [2020-08-19 05:56:03,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:56:03,113 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 180 transitions. [2020-08-19 05:56:03,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 05:56:03,113 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 180 transitions. [2020-08-19 05:56:03,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-19 05:56:03,117 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:56:03,117 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:56:03,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 05:56:03,117 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:56:03,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:56:03,118 INFO L82 PathProgramCache]: Analyzing trace with hash 330531379, now seen corresponding path program 1 times [2020-08-19 05:56:03,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:56:03,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377216090] [2020-08-19 05:56:03,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:56:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:03,469 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:56:03,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:03,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:56:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:03,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:03,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:03,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:56:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:03,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:56:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:03,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:56:03,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:03,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:03,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:56:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:03,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:03,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:03,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:03,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-19 05:56:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:03,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 05:56:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:03,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 05:56:03,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377216090] [2020-08-19 05:56:03,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:56:03,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 05:56:03,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62938019] [2020-08-19 05:56:03,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 05:56:03,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:56:03,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 05:56:03,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 05:56:03,626 INFO L87 Difference]: Start difference. First operand 154 states and 180 transitions. Second operand 7 states. [2020-08-19 05:56:03,993 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:05,434 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:05,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:56:05,989 INFO L93 Difference]: Finished difference Result 424 states and 525 transitions. [2020-08-19 05:56:05,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 05:56:05,990 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-08-19 05:56:05,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:56:05,994 INFO L225 Difference]: With dead ends: 424 [2020-08-19 05:56:05,994 INFO L226 Difference]: Without dead ends: 298 [2020-08-19 05:56:05,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-19 05:56:05,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-08-19 05:56:06,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 255. [2020-08-19 05:56:06,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-08-19 05:56:06,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 290 transitions. [2020-08-19 05:56:06,042 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 290 transitions. Word has length 82 [2020-08-19 05:56:06,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:56:06,043 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 290 transitions. [2020-08-19 05:56:06,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 05:56:06,043 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 290 transitions. [2020-08-19 05:56:06,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-19 05:56:06,045 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:56:06,045 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:56:06,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 05:56:06,046 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:56:06,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:56:06,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1154984362, now seen corresponding path program 1 times [2020-08-19 05:56:06,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:56:06,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121920639] [2020-08-19 05:56:06,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:56:06,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:06,372 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:56:06,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:06,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:56:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:06,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:06,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:06,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:56:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:06,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:56:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:06,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:56:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:06,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:06,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:56:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:06,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:06,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:06,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:06,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:06,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:56:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:06,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:56:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:06,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 05:56:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:06,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 05:56:06,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121920639] [2020-08-19 05:56:06,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:56:06,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 05:56:06,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427630150] [2020-08-19 05:56:06,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 05:56:06,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:56:06,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 05:56:06,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 05:56:06,515 INFO L87 Difference]: Start difference. First operand 255 states and 290 transitions. Second operand 9 states. [2020-08-19 05:56:06,928 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:07,534 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:56:08,475 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:08,761 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:09,170 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:56:09,417 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:56:10,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:56:10,086 INFO L93 Difference]: Finished difference Result 524 states and 626 transitions. [2020-08-19 05:56:10,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 05:56:10,087 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-08-19 05:56:10,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:56:10,091 INFO L225 Difference]: With dead ends: 524 [2020-08-19 05:56:10,091 INFO L226 Difference]: Without dead ends: 297 [2020-08-19 05:56:10,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 05:56:10,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-08-19 05:56:10,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 254. [2020-08-19 05:56:10,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-08-19 05:56:10,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 287 transitions. [2020-08-19 05:56:10,142 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 287 transitions. Word has length 96 [2020-08-19 05:56:10,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:56:10,145 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 287 transitions. [2020-08-19 05:56:10,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 05:56:10,145 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 287 transitions. [2020-08-19 05:56:10,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-19 05:56:10,149 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:56:10,149 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:56:10,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 05:56:10,150 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:56:10,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:56:10,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1590195415, now seen corresponding path program 1 times [2020-08-19 05:56:10,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:56:10,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317300322] [2020-08-19 05:56:10,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:56:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:10,441 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:56:10,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:10,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:56:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:10,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:10,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:10,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:56:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:10,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:56:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:10,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:56:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:10,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:10,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:56:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:10,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:10,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:10,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:10,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:10,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:56:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:10,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:10,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:10,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:10,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-19 05:56:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:10,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-19 05:56:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:10,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 05:56:10,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317300322] [2020-08-19 05:56:10,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:56:10,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 05:56:10,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141368691] [2020-08-19 05:56:10,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 05:56:10,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:56:10,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 05:56:10,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 05:56:10,611 INFO L87 Difference]: Start difference. First operand 254 states and 287 transitions. Second operand 9 states. [2020-08-19 05:56:11,554 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:56:11,791 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 05:56:12,036 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:12,285 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:13,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:56:13,212 INFO L93 Difference]: Finished difference Result 524 states and 631 transitions. [2020-08-19 05:56:13,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 05:56:13,213 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 112 [2020-08-19 05:56:13,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:56:13,217 INFO L225 Difference]: With dead ends: 524 [2020-08-19 05:56:13,217 INFO L226 Difference]: Without dead ends: 298 [2020-08-19 05:56:13,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 05:56:13,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-08-19 05:56:13,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 259. [2020-08-19 05:56:13,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-08-19 05:56:13,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 292 transitions. [2020-08-19 05:56:13,281 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 292 transitions. Word has length 112 [2020-08-19 05:56:13,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:56:13,281 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 292 transitions. [2020-08-19 05:56:13,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 05:56:13,281 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 292 transitions. [2020-08-19 05:56:13,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-19 05:56:13,283 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:56:13,283 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:56:13,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 05:56:13,283 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:56:13,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:56:13,284 INFO L82 PathProgramCache]: Analyzing trace with hash -765609835, now seen corresponding path program 1 times [2020-08-19 05:56:13,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:56:13,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923539991] [2020-08-19 05:56:13,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:56:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:13,544 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:56:13,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:13,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:56:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:13,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:13,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:13,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:13,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:56:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:13,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:56:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:13,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:56:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:13,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:13,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:56:13,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:13,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:13,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:13,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:13,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:13,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:56:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:13,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:13,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:13,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:13,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-19 05:56:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:13,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-19 05:56:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:13,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 05:56:13,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923539991] [2020-08-19 05:56:13,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:56:13,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 05:56:13,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553404866] [2020-08-19 05:56:13,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 05:56:13,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:56:13,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 05:56:13,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 05:56:13,689 INFO L87 Difference]: Start difference. First operand 259 states and 292 transitions. Second operand 11 states. [2020-08-19 05:56:14,262 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:14,513 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:14,734 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:15,391 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:15,630 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:15,866 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:16,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:56:16,944 INFO L93 Difference]: Finished difference Result 534 states and 642 transitions. [2020-08-19 05:56:16,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 05:56:16,945 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 112 [2020-08-19 05:56:16,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:56:16,948 INFO L225 Difference]: With dead ends: 534 [2020-08-19 05:56:16,948 INFO L226 Difference]: Without dead ends: 303 [2020-08-19 05:56:16,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 05:56:16,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-08-19 05:56:16,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 263. [2020-08-19 05:56:16,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-08-19 05:56:16,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 296 transitions. [2020-08-19 05:56:16,993 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 296 transitions. Word has length 112 [2020-08-19 05:56:16,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:56:16,993 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 296 transitions. [2020-08-19 05:56:16,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 05:56:16,993 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 296 transitions. [2020-08-19 05:56:16,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-19 05:56:16,995 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:56:16,995 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:56:16,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 05:56:16,996 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:56:16,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:56:16,996 INFO L82 PathProgramCache]: Analyzing trace with hash 3560180, now seen corresponding path program 1 times [2020-08-19 05:56:16,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:56:16,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367765957] [2020-08-19 05:56:16,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:56:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:17,354 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:56:17,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:17,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:56:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:17,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:17,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:17,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:56:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:17,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:56:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:17,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:56:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:17,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:17,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:56:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:17,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:17,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:17,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:17,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:17,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:56:17,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:17,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:17,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:17,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:17,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-19 05:56:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:17,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-19 05:56:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:17,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 05:56:17,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367765957] [2020-08-19 05:56:17,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:56:17,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 05:56:17,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256360573] [2020-08-19 05:56:17,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 05:56:17,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:56:17,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 05:56:17,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 05:56:17,519 INFO L87 Difference]: Start difference. First operand 263 states and 296 transitions. Second operand 7 states. [2020-08-19 05:56:18,011 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:18,767 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:20,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:56:20,739 INFO L93 Difference]: Finished difference Result 713 states and 879 transitions. [2020-08-19 05:56:20,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 05:56:20,739 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2020-08-19 05:56:20,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:56:20,743 INFO L225 Difference]: With dead ends: 713 [2020-08-19 05:56:20,743 INFO L226 Difference]: Without dead ends: 478 [2020-08-19 05:56:20,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-19 05:56:20,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-08-19 05:56:20,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 440. [2020-08-19 05:56:20,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2020-08-19 05:56:20,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 512 transitions. [2020-08-19 05:56:20,807 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 512 transitions. Word has length 112 [2020-08-19 05:56:20,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:56:20,808 INFO L479 AbstractCegarLoop]: Abstraction has 440 states and 512 transitions. [2020-08-19 05:56:20,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 05:56:20,808 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 512 transitions. [2020-08-19 05:56:20,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-08-19 05:56:20,810 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:56:20,810 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:56:20,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 05:56:20,810 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:56:20,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:56:20,811 INFO L82 PathProgramCache]: Analyzing trace with hash -427651474, now seen corresponding path program 1 times [2020-08-19 05:56:20,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:56:20,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029860573] [2020-08-19 05:56:20,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:56:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:21,147 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:56:21,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:21,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:56:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:21,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:21,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:21,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:56:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:21,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:56:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:21,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:56:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:21,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 05:56:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:21,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:21,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 05:56:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:21,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:21,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:21,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:21,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:21,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:21,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:21,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:56:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:21,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:21,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:21,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:21,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-19 05:56:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:21,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-19 05:56:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:21,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 05:56:21,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029860573] [2020-08-19 05:56:21,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:56:21,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 05:56:21,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640502760] [2020-08-19 05:56:21,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 05:56:21,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:56:21,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 05:56:21,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:56:21,403 INFO L87 Difference]: Start difference. First operand 440 states and 512 transitions. Second operand 12 states. [2020-08-19 05:56:21,994 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:22,646 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:23,669 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:56:23,976 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:56:24,218 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:24,484 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:56:24,786 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:56:26,293 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:26,558 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:27,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:56:27,528 INFO L93 Difference]: Finished difference Result 1217 states and 1501 transitions. [2020-08-19 05:56:27,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 05:56:27,536 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 116 [2020-08-19 05:56:27,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:56:27,541 INFO L225 Difference]: With dead ends: 1217 [2020-08-19 05:56:27,541 INFO L226 Difference]: Without dead ends: 880 [2020-08-19 05:56:27,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-19 05:56:27,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2020-08-19 05:56:27,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 767. [2020-08-19 05:56:27,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 767 states. [2020-08-19 05:56:27,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 883 transitions. [2020-08-19 05:56:27,683 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 883 transitions. Word has length 116 [2020-08-19 05:56:27,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:56:27,684 INFO L479 AbstractCegarLoop]: Abstraction has 767 states and 883 transitions. [2020-08-19 05:56:27,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 05:56:27,684 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 883 transitions. [2020-08-19 05:56:27,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-08-19 05:56:27,687 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:56:27,688 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:56:27,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 05:56:27,689 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:56:27,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:56:27,689 INFO L82 PathProgramCache]: Analyzing trace with hash -701597495, now seen corresponding path program 1 times [2020-08-19 05:56:27,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:56:27,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50730125] [2020-08-19 05:56:27,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:56:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,074 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:56:28,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:56:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:28,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:56:28,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:56:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:56:28,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 05:56:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 05:56:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:56:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:28,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-19 05:56:28,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-19 05:56:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:28,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 05:56:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-19 05:56:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:28,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 05:56:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:56:28,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-19 05:56:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 05:56:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:28,438 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-08-19 05:56:28,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50730125] [2020-08-19 05:56:28,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:56:28,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 05:56:28,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976250072] [2020-08-19 05:56:28,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 05:56:28,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:56:28,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 05:56:28,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-19 05:56:28,442 INFO L87 Difference]: Start difference. First operand 767 states and 883 transitions. Second operand 16 states. [2020-08-19 05:56:29,445 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:29,768 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 05:56:30,030 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 05:56:30,277 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 05:56:30,846 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:31,098 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:31,982 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 05:56:32,549 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:32,968 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 05:56:33,364 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:56:33,640 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:56:33,966 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:34,512 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:34,975 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:35,521 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:35,801 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 05:56:36,274 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 05:56:36,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:56:36,768 INFO L93 Difference]: Finished difference Result 1642 states and 1948 transitions. [2020-08-19 05:56:36,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-19 05:56:36,769 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 193 [2020-08-19 05:56:36,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:56:36,775 INFO L225 Difference]: With dead ends: 1642 [2020-08-19 05:56:36,776 INFO L226 Difference]: Without dead ends: 974 [2020-08-19 05:56:36,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=568, Invalid=2084, Unknown=0, NotChecked=0, Total=2652 [2020-08-19 05:56:36,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2020-08-19 05:56:36,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 895. [2020-08-19 05:56:36,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 895 states. [2020-08-19 05:56:36,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1041 transitions. [2020-08-19 05:56:36,919 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1041 transitions. Word has length 193 [2020-08-19 05:56:36,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:56:36,920 INFO L479 AbstractCegarLoop]: Abstraction has 895 states and 1041 transitions. [2020-08-19 05:56:36,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 05:56:36,920 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1041 transitions. [2020-08-19 05:56:36,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-08-19 05:56:36,926 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:56:36,927 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:56:36,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 05:56:36,927 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:56:36,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:56:36,928 INFO L82 PathProgramCache]: Analyzing trace with hash 833806897, now seen corresponding path program 1 times [2020-08-19 05:56:36,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:56:36,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270715414] [2020-08-19 05:56:36,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:56:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,237 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:56:37,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:56:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:37,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:37,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:56:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:56:37,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:56:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 05:56:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 05:56:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:37,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:56:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:37,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-19 05:56:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:56:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 05:56:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 05:56:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:56:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 05:56:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-19 05:56:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 05:56:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 05:56:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 05:56:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-19 05:56:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-08-19 05:56:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-08-19 05:56:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:37,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:56:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:37,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-08-19 05:56:37,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-19 05:56:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:37,672 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 77 proven. 7 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2020-08-19 05:56:37,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270715414] [2020-08-19 05:56:37,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:56:37,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-19 05:56:37,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973193744] [2020-08-19 05:56:37,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 05:56:37,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:56:37,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 05:56:37,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-08-19 05:56:37,674 INFO L87 Difference]: Start difference. First operand 895 states and 1041 transitions. Second operand 14 states. [2020-08-19 05:56:38,177 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:38,948 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:40,106 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:40,432 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:40,714 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:41,018 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 05:56:41,369 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 05:56:41,668 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 05:56:43,237 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:43,757 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-08-19 05:56:44,054 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 05:56:44,338 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-19 05:56:45,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:56:45,766 INFO L93 Difference]: Finished difference Result 2647 states and 3144 transitions. [2020-08-19 05:56:45,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-19 05:56:45,768 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 331 [2020-08-19 05:56:45,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:56:45,778 INFO L225 Difference]: With dead ends: 2647 [2020-08-19 05:56:45,778 INFO L226 Difference]: Without dead ends: 1788 [2020-08-19 05:56:45,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=316, Invalid=1244, Unknown=0, NotChecked=0, Total=1560 [2020-08-19 05:56:45,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2020-08-19 05:56:46,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 1747. [2020-08-19 05:56:46,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1747 states. [2020-08-19 05:56:46,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 2006 transitions. [2020-08-19 05:56:46,167 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 2006 transitions. Word has length 331 [2020-08-19 05:56:46,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:56:46,171 INFO L479 AbstractCegarLoop]: Abstraction has 1747 states and 2006 transitions. [2020-08-19 05:56:46,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 05:56:46,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 2006 transitions. [2020-08-19 05:56:46,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-08-19 05:56:46,182 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:56:46,183 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:56:46,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 05:56:46,184 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:56:46,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:56:46,185 INFO L82 PathProgramCache]: Analyzing trace with hash -944820455, now seen corresponding path program 1 times [2020-08-19 05:56:46,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:56:46,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108708584] [2020-08-19 05:56:46,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:56:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,525 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:56:46,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:46,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:56:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:56:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:56:46,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:56:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 05:56:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 05:56:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:46,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 05:56:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:56:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-19 05:56:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:46,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-19 05:56:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:46,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:46,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 05:56:46,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 05:56:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:56:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 05:56:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-08-19 05:56:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 05:56:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 05:56:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 05:56:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-08-19 05:56:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-08-19 05:56:46,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:46,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:56:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:47,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:47,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:47,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:47,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-08-19 05:56:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:47,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-19 05:56:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:47,117 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 54 proven. 40 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2020-08-19 05:56:47,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108708584] [2020-08-19 05:56:47,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:56:47,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 05:56:47,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122470559] [2020-08-19 05:56:47,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 05:56:47,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:56:47,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 05:56:47,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-08-19 05:56:47,122 INFO L87 Difference]: Start difference. First operand 1747 states and 2006 transitions. Second operand 19 states. [2020-08-19 05:56:48,018 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:48,367 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:48,629 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:48,875 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:49,578 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:50,909 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:51,279 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:51,572 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:51,874 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:52,239 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:52,560 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 192