/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:15:52,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:15:52,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:15:52,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:15:52,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:15:52,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:15:52,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:15:52,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:15:53,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:15:53,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:15:53,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:15:53,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:15:53,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:15:53,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:15:53,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:15:53,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:15:53,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:15:53,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:15:53,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:15:53,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:15:53,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:15:53,027 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:15:53,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:15:53,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:15:53,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:15:53,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:15:53,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:15:53,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:15:53,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:15:53,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:15:53,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:15:53,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:15:53,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:15:53,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:15:53,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:15:53,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:15:53,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:15:53,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:15:53,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:15:53,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:15:53,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:15:53,074 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 00:15:53,113 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:15:53,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:15:53,116 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:15:53,116 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:15:53,116 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:15:53,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:15:53,117 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:15:53,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:15:53,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:15:53,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:15:53,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:15:53,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:15:53,119 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:15:53,119 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:15:53,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:15:53,120 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:15:53,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:15:53,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:15:53,120 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:15:53,121 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:15:53,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:15:53,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:15:53,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:15:53,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:15:53,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:15:53,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:15:53,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:15:53,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:15:53,122 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:15:53,123 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:15:53,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:15:53,441 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:15:53,447 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:15:53,449 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:15:53,450 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:15:53,451 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c [2020-08-19 00:15:53,530 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e7e328b6/0dd04e9cc8b244cf895907dc2c62608e/FLAG623954659 [2020-08-19 00:15:54,070 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:15:54,071 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c [2020-08-19 00:15:54,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e7e328b6/0dd04e9cc8b244cf895907dc2c62608e/FLAG623954659 [2020-08-19 00:15:54,388 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e7e328b6/0dd04e9cc8b244cf895907dc2c62608e [2020-08-19 00:15:54,396 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:15:54,398 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:15:54,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:15:54,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:15:54,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:15:54,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:15:54" (1/1) ... [2020-08-19 00:15:54,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cc704b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:15:54, skipping insertion in model container [2020-08-19 00:15:54,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:15:54" (1/1) ... [2020-08-19 00:15:54,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:15:54,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:15:54,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:15:54,946 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:15:55,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:15:55,069 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:15:55,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:15:55 WrapperNode [2020-08-19 00:15:55,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:15:55,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:15:55,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:15:55,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:15:55,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:15:55" (1/1) ... [2020-08-19 00:15:55,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:15:55" (1/1) ... [2020-08-19 00:15:55,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:15:55" (1/1) ... [2020-08-19 00:15:55,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:15:55" (1/1) ... [2020-08-19 00:15:55,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:15:55" (1/1) ... [2020-08-19 00:15:55,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:15:55" (1/1) ... [2020-08-19 00:15:55,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:15:55" (1/1) ... [2020-08-19 00:15:55,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:15:55,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:15:55,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:15:55,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:15:55,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:15:55" (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 00:15:55,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:15:55,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:15:55,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 00:15:55,240 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 00:15:55,240 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 00:15:55,241 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:15:55,241 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 00:15:55,241 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 00:15:55,241 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 00:15:55,242 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 00:15:55,242 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 00:15:55,242 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 00:15:55,242 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 00:15:55,243 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 00:15:55,243 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 00:15:55,244 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 00:15:55,244 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 00:15:55,244 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 00:15:55,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-19 00:15:55,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-19 00:15:55,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-19 00:15:55,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 00:15:55,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 00:15:55,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 00:15:55,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 00:15:55,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 00:15:55,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 00:15:55,249 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 00:15:55,249 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 00:15:55,249 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 00:15:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 00:15:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:15:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 00:15:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 00:15:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 00:15:55,251 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 00:15:55,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 00:15:55,251 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 00:15:55,251 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 00:15:55,251 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 00:15:55,251 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 00:15:55,251 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 00:15:55,252 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 00:15:55,252 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 00:15:55,252 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 00:15:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:15:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:15:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 00:15:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 00:15:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 00:15:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 00:15:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 00:15:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 00:15:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 00:15:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 00:15:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 00:15:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 00:15:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 00:15:55,255 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 00:15:55,255 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 00:15:55,255 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-19 00:15:55,255 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-19 00:15:55,255 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 00:15:55,255 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 00:15:55,255 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 00:15:55,256 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:15:55,256 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 00:15:55,256 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 00:15:55,256 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 00:15:55,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:15:55,256 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 00:15:55,257 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 00:15:55,257 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 00:15:55,258 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 00:15:55,258 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 00:15:55,258 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 00:15:55,259 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-19 00:15:55,259 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 00:15:55,259 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:15:55,260 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:15:55,260 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 00:15:55,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:15:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:15:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:15:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:15:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 00:15:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:15:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 00:15:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 00:15:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:15:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 00:15:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 00:15:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 00:15:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 00:15:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 00:15:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 00:15:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 00:15:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 00:15:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 00:15:55,263 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:15:55,263 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 00:15:55,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:15:55,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 00:15:55,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:15:56,300 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:15:56,300 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 00:15:56,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:15:56 BoogieIcfgContainer [2020-08-19 00:15:56,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:15:56,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:15:56,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:15:56,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:15:56,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:15:54" (1/3) ... [2020-08-19 00:15:56,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c141d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:15:56, skipping insertion in model container [2020-08-19 00:15:56,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:15:55" (2/3) ... [2020-08-19 00:15:56,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c141d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:15:56, skipping insertion in model container [2020-08-19 00:15:56,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:15:56" (3/3) ... [2020-08-19 00:15:56,314 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product60.cil.c [2020-08-19 00:15:56,325 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:15:56,334 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:15:56,349 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:15:56,376 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:15:56,376 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:15:56,377 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:15:56,377 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:15:56,377 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:15:56,377 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:15:56,377 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:15:56,377 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:15:56,400 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2020-08-19 00:15:56,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 00:15:56,411 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:15:56,413 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 00:15:56,413 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:15:56,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:15:56,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1771327782, now seen corresponding path program 1 times [2020-08-19 00:15:56,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:15:56,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229140816] [2020-08-19 00:15:56,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:15:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:57,078 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:15:57,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:57,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:57,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:15:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:57,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:57,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:57,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:15:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:57,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:57,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:15:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:57,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:57,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:15:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:57,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 00:15:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:57,191 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 00:15:57,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229140816] [2020-08-19 00:15:57,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:15:57,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:15:57,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119783840] [2020-08-19 00:15:57,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:15:57,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:15:57,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:15:57,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:15:57,221 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 4 states. [2020-08-19 00:15:58,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:15:58,334 INFO L93 Difference]: Finished difference Result 360 states and 456 transitions. [2020-08-19 00:15:58,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 00:15:58,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 00:15:58,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:15:58,352 INFO L225 Difference]: With dead ends: 360 [2020-08-19 00:15:58,352 INFO L226 Difference]: Without dead ends: 198 [2020-08-19 00:15:58,357 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 00:15:58,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-08-19 00:15:58,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 163. [2020-08-19 00:15:58,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-08-19 00:15:58,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 190 transitions. [2020-08-19 00:15:58,464 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 190 transitions. Word has length 59 [2020-08-19 00:15:58,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:15:58,465 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 190 transitions. [2020-08-19 00:15:58,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:15:58,465 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 190 transitions. [2020-08-19 00:15:58,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 00:15:58,469 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:15:58,470 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] [2020-08-19 00:15:58,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:15:58,470 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:15:58,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:15:58,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1467126020, now seen corresponding path program 1 times [2020-08-19 00:15:58,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:15:58,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087117045] [2020-08-19 00:15:58,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:15:58,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:58,843 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:15:58,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:58,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:15:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:58,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:58,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:58,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:15:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:58,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:58,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:15:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:58,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:58,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 00:15:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:58,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 00:15:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:58,906 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 00:15:58,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087117045] [2020-08-19 00:15:58,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:15:58,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 00:15:58,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379333957] [2020-08-19 00:15:58,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 00:15:58,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:15:58,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 00:15:58,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:15:58,910 INFO L87 Difference]: Start difference. First operand 163 states and 190 transitions. Second operand 5 states. [2020-08-19 00:15:59,314 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:16:00,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:16:00,313 INFO L93 Difference]: Finished difference Result 295 states and 356 transitions. [2020-08-19 00:16:00,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 00:16:00,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-19 00:16:00,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:16:00,317 INFO L225 Difference]: With dead ends: 295 [2020-08-19 00:16:00,317 INFO L226 Difference]: Without dead ends: 188 [2020-08-19 00:16:00,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:16:00,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-19 00:16:00,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 154. [2020-08-19 00:16:00,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-08-19 00:16:00,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 178 transitions. [2020-08-19 00:16:00,366 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 178 transitions. Word has length 60 [2020-08-19 00:16:00,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:16:00,367 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 178 transitions. [2020-08-19 00:16:00,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 00:16:00,367 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 178 transitions. [2020-08-19 00:16:00,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-19 00:16:00,369 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:16:00,370 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] [2020-08-19 00:16:00,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:16:00,370 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:16:00,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:16:00,371 INFO L82 PathProgramCache]: Analyzing trace with hash 2049486337, now seen corresponding path program 1 times [2020-08-19 00:16:00,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:16:00,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013000093] [2020-08-19 00:16:00,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:16:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:00,767 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:16:00,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:00,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:16:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:00,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:16:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:00,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:16:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:00,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:16:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:00,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:16:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:00,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:16:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:00,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:00,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 00:16:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:00,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 00:16:00,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:00,906 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 00:16:00,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013000093] [2020-08-19 00:16:00,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:16:00,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:16:00,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433276766] [2020-08-19 00:16:00,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:16:00,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:16:00,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:16:00,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:16:00,909 INFO L87 Difference]: Start difference. First operand 154 states and 178 transitions. Second operand 9 states. [2020-08-19 00:16:01,229 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:16:01,550 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:16:01,811 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:16:02,021 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:16:02,888 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:16:04,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:16:04,943 INFO L93 Difference]: Finished difference Result 515 states and 629 transitions. [2020-08-19 00:16:04,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 00:16:04,945 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-19 00:16:04,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:16:04,950 INFO L225 Difference]: With dead ends: 515 [2020-08-19 00:16:04,951 INFO L226 Difference]: Without dead ends: 389 [2020-08-19 00:16:04,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-19 00:16:04,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-08-19 00:16:05,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 324. [2020-08-19 00:16:05,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-08-19 00:16:05,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 388 transitions. [2020-08-19 00:16:05,029 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 388 transitions. Word has length 65 [2020-08-19 00:16:05,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:16:05,029 INFO L479 AbstractCegarLoop]: Abstraction has 324 states and 388 transitions. [2020-08-19 00:16:05,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:16:05,030 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 388 transitions. [2020-08-19 00:16:05,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 00:16:05,032 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:16:05,032 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] [2020-08-19 00:16:05,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:16:05,033 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:16:05,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:16:05,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1476281748, now seen corresponding path program 1 times [2020-08-19 00:16:05,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:16:05,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722566356] [2020-08-19 00:16:05,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:16:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:05,352 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:16:05,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:05,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:16:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:05,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:16:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:05,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:16:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:05,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:16:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:05,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:16:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:05,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:16:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:05,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:16:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:05,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:05,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 00:16:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:05,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 00:16:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:05,456 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 00:16:05,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722566356] [2020-08-19 00:16:05,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:16:05,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:16:05,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470494944] [2020-08-19 00:16:05,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:16:05,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:16:05,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:16:05,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:16:05,458 INFO L87 Difference]: Start difference. First operand 324 states and 388 transitions. Second operand 9 states. [2020-08-19 00:16:05,817 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:16:06,506 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:16:07,483 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:16:07,721 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:16:08,023 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:16:08,303 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:16:09,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:16:09,091 INFO L93 Difference]: Finished difference Result 819 states and 1054 transitions. [2020-08-19 00:16:09,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 00:16:09,092 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-19 00:16:09,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:16:09,098 INFO L225 Difference]: With dead ends: 819 [2020-08-19 00:16:09,098 INFO L226 Difference]: Without dead ends: 523 [2020-08-19 00:16:09,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 00:16:09,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-08-19 00:16:09,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 455. [2020-08-19 00:16:09,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-08-19 00:16:09,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 543 transitions. [2020-08-19 00:16:09,216 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 543 transitions. Word has length 70 [2020-08-19 00:16:09,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:16:09,216 INFO L479 AbstractCegarLoop]: Abstraction has 455 states and 543 transitions. [2020-08-19 00:16:09,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:16:09,216 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 543 transitions. [2020-08-19 00:16:09,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 00:16:09,219 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:16:09,219 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] [2020-08-19 00:16:09,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:16:09,220 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:16:09,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:16:09,220 INFO L82 PathProgramCache]: Analyzing trace with hash 340334758, now seen corresponding path program 1 times [2020-08-19 00:16:09,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:16:09,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118411883] [2020-08-19 00:16:09,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:16:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:09,474 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:16:09,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:09,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:16:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:09,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:16:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:09,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:16:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:09,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:16:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:09,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:16:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:09,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:16:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:09,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:09,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 00:16:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:09,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:09,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:09,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:09,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:16:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:09,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:09,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:09,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:09,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:16:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:09,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 00:16:09,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:09,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 00:16:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:09,691 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 00:16:09,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118411883] [2020-08-19 00:16:09,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:16:09,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:16:09,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594505602] [2020-08-19 00:16:09,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:16:09,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:16:09,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:16:09,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:16:09,694 INFO L87 Difference]: Start difference. First operand 455 states and 543 transitions. Second operand 9 states. [2020-08-19 00:16:10,770 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:16:11,003 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 00:16:11,261 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:16:11,529 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:16:12,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:16:12,504 INFO L93 Difference]: Finished difference Result 975 states and 1246 transitions. [2020-08-19 00:16:12,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 00:16:12,506 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-08-19 00:16:12,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:16:12,513 INFO L225 Difference]: With dead ends: 975 [2020-08-19 00:16:12,514 INFO L226 Difference]: Without dead ends: 548 [2020-08-19 00:16:12,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:16:12,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2020-08-19 00:16:12,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 468. [2020-08-19 00:16:12,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-08-19 00:16:12,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 557 transitions. [2020-08-19 00:16:12,592 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 557 transitions. Word has length 108 [2020-08-19 00:16:12,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:16:12,592 INFO L479 AbstractCegarLoop]: Abstraction has 468 states and 557 transitions. [2020-08-19 00:16:12,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:16:12,593 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 557 transitions. [2020-08-19 00:16:12,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 00:16:12,595 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:16:12,595 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] [2020-08-19 00:16:12,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:16:12,596 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:16:12,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:16:12,596 INFO L82 PathProgramCache]: Analyzing trace with hash -2026359836, now seen corresponding path program 1 times [2020-08-19 00:16:12,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:16:12,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737968142] [2020-08-19 00:16:12,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:16:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:12,861 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:16:12,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:12,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:16:12,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:12,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:16:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:12,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:16:12,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:12,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:16:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:12,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:16:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:12,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:16:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:12,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:12,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 00:16:12,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:12,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:12,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:12,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:12,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:12,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:16:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:12,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:12,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:12,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:16:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:12,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 00:16:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:12,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 00:16:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:13,011 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 00:16:13,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737968142] [2020-08-19 00:16:13,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:16:13,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 00:16:13,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367108929] [2020-08-19 00:16:13,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 00:16:13,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:16:13,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 00:16:13,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 00:16:13,015 INFO L87 Difference]: Start difference. First operand 468 states and 557 transitions. Second operand 11 states. [2020-08-19 00:16:13,503 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:16:13,761 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:16:13,996 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:16:14,792 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:16:15,061 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:16:15,341 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:16:16,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:16:16,410 INFO L93 Difference]: Finished difference Result 998 states and 1270 transitions. [2020-08-19 00:16:16,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 00:16:16,411 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-19 00:16:16,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:16:16,418 INFO L225 Difference]: With dead ends: 998 [2020-08-19 00:16:16,420 INFO L226 Difference]: Without dead ends: 558 [2020-08-19 00:16:16,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:16:16,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2020-08-19 00:16:16,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 476. [2020-08-19 00:16:16,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-08-19 00:16:16,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 565 transitions. [2020-08-19 00:16:16,524 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 565 transitions. Word has length 108 [2020-08-19 00:16:16,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:16:16,528 INFO L479 AbstractCegarLoop]: Abstraction has 476 states and 565 transitions. [2020-08-19 00:16:16,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 00:16:16,528 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 565 transitions. [2020-08-19 00:16:16,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 00:16:16,532 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:16:16,533 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] [2020-08-19 00:16:16,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:16:16,533 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:16:16,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:16:16,533 INFO L82 PathProgramCache]: Analyzing trace with hash 2028067331, now seen corresponding path program 1 times [2020-08-19 00:16:16,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:16:16,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688517739] [2020-08-19 00:16:16,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:16:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,810 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:16:16,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:16:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:16:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:16:16,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:16:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:16:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:16:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 00:16:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:16:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:16:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 00:16:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 00:16:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,952 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 00:16:16,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688517739] [2020-08-19 00:16:16,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:16:16,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 00:16:16,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375581358] [2020-08-19 00:16:16,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 00:16:16,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:16:16,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 00:16:16,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:16:16,954 INFO L87 Difference]: Start difference. First operand 476 states and 565 transitions. Second operand 7 states. [2020-08-19 00:16:17,263 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:16:17,791 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:16:19,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:16:19,840 INFO L93 Difference]: Finished difference Result 1479 states and 1900 transitions. [2020-08-19 00:16:19,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 00:16:19,841 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-08-19 00:16:19,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:16:19,850 INFO L225 Difference]: With dead ends: 1479 [2020-08-19 00:16:19,850 INFO L226 Difference]: Without dead ends: 1031 [2020-08-19 00:16:19,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-19 00:16:19,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2020-08-19 00:16:20,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 953. [2020-08-19 00:16:20,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2020-08-19 00:16:20,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1151 transitions. [2020-08-19 00:16:20,024 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1151 transitions. Word has length 108 [2020-08-19 00:16:20,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:16:20,025 INFO L479 AbstractCegarLoop]: Abstraction has 953 states and 1151 transitions. [2020-08-19 00:16:20,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 00:16:20,025 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1151 transitions. [2020-08-19 00:16:20,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-19 00:16:20,030 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:16:20,030 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 00:16:20,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 00:16:20,030 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:16:20,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:16:20,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1144962269, now seen corresponding path program 1 times [2020-08-19 00:16:20,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:16:20,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243015761] [2020-08-19 00:16:20,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:16:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:20,357 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:16:20,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:20,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:20,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:16:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:20,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:16:20,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:20,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:16:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:20,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:16:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:20,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:16:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:20,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:16:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:20,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 00:16:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:20,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:20,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-19 00:16:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:20,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:20,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:20,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:20,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:16:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:20,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:20,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:20,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:16:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:20,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-19 00:16:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:20,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-19 00:16:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:20,572 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 00:16:20,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243015761] [2020-08-19 00:16:20,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:16:20,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 00:16:20,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141953844] [2020-08-19 00:16:20,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 00:16:20,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:16:20,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 00:16:20,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:16:20,579 INFO L87 Difference]: Start difference. First operand 953 states and 1151 transitions. Second operand 12 states. [2020-08-19 00:16:21,020 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:16:21,725 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:16:22,455 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:16:22,798 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:16:23,053 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:16:23,323 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:16:23,573 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:16:25,587 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:16:25,873 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:16:26,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:16:26,485 INFO L93 Difference]: Finished difference Result 2713 states and 3488 transitions. [2020-08-19 00:16:26,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 00:16:26,488 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-08-19 00:16:26,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:16:26,500 INFO L225 Difference]: With dead ends: 2713 [2020-08-19 00:16:26,501 INFO L226 Difference]: Without dead ends: 1980 [2020-08-19 00:16:26,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-19 00:16:26,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2020-08-19 00:16:26,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1674. [2020-08-19 00:16:26,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1674 states. [2020-08-19 00:16:26,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 2008 transitions. [2020-08-19 00:16:26,804 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 2008 transitions. Word has length 112 [2020-08-19 00:16:26,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:16:26,805 INFO L479 AbstractCegarLoop]: Abstraction has 1674 states and 2008 transitions. [2020-08-19 00:16:26,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 00:16:26,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 2008 transitions. [2020-08-19 00:16:26,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-08-19 00:16:26,809 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:16:26,809 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:16:26,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 00:16:26,810 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:16:26,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:16:26,810 INFO L82 PathProgramCache]: Analyzing trace with hash 164237146, now seen corresponding path program 1 times [2020-08-19 00:16:26,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:16:26,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449665763] [2020-08-19 00:16:26,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:16:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:27,106 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:16:27,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:27,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:16:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:27,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:16:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:27,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:16:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:27,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:16:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:27,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:16:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:27,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:16:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:27,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 00:16:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:27,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:27,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:27,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:16:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:27,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:27,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:27,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:27,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:16:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:27,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:27,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:27,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:16:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:27,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 00:16:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:27,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:27,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-19 00:16:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:27,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:27,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-19 00:16:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:27,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-19 00:16:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:27,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:27,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:27,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 00:16:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:27,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:27,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:27,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-19 00:16:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:27,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-19 00:16:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:27,376 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 00:16:27,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449665763] [2020-08-19 00:16:27,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:16:27,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 00:16:27,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089959173] [2020-08-19 00:16:27,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 00:16:27,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:16:27,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 00:16:27,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-19 00:16:27,378 INFO L87 Difference]: Start difference. First operand 1674 states and 2008 transitions. Second operand 16 states. [2020-08-19 00:16:28,108 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:16:28,575 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 00:16:28,972 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 00:16:29,214 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 00:16:29,891 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:16:30,172 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:16:30,523 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 00:16:30,798 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 00:16:32,118 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:16:32,728 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:16:33,023 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:16:33,348 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:16:33,920 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:16:34,360 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:16:34,736 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 00:16:35,490 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:16:35,802 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 00:16:36,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:16:36,608 INFO L93 Difference]: Finished difference Result 3619 states and 4470 transitions. [2020-08-19 00:16:36,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-19 00:16:36,609 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 174 [2020-08-19 00:16:36,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:16:36,621 INFO L225 Difference]: With dead ends: 3619 [2020-08-19 00:16:36,621 INFO L226 Difference]: Without dead ends: 2153 [2020-08-19 00:16:36,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=589, Invalid=2167, Unknown=0, NotChecked=0, Total=2756 [2020-08-19 00:16:36,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2020-08-19 00:16:36,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 1961. [2020-08-19 00:16:36,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1961 states. [2020-08-19 00:16:36,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 2310 transitions. [2020-08-19 00:16:36,953 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 2310 transitions. Word has length 174 [2020-08-19 00:16:36,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:16:36,954 INFO L479 AbstractCegarLoop]: Abstraction has 1961 states and 2310 transitions. [2020-08-19 00:16:36,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 00:16:36,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 2310 transitions. [2020-08-19 00:16:36,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-08-19 00:16:36,964 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:16:36,964 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, 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, 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] [2020-08-19 00:16:36,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 00:16:36,965 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:16:36,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:16:36,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1190190750, now seen corresponding path program 1 times [2020-08-19 00:16:36,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:16:36,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147534734] [2020-08-19 00:16:36,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:16:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,269 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:16:37,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:16:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:16:37,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:16:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:16:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:16:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:16:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 00:16:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:16:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:16:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:16:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 00:16:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 00:16:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:16:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 00:16:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 00:16:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:16:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-19 00:16:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:16:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 00:16:37,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:37,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 00:16:37,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 00:16:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:37,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-08-19 00:16:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-19 00:16:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-19 00:16:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:16:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:16:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-08-19 00:16:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-08-19 00:16:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:37,780 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 82 proven. 31 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2020-08-19 00:16:37,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147534734] [2020-08-19 00:16:37,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:16:37,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 00:16:37,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961152781] [2020-08-19 00:16:37,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 00:16:37,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:16:37,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 00:16:37,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-19 00:16:37,784 INFO L87 Difference]: Start difference. First operand 1961 states and 2310 transitions. Second operand 15 states. [2020-08-19 00:16:39,064 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:16:39,354 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:16:39,595 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:16:39,845 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:16:40,119 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:16:41,130 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:16:41,667 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-19 00:16:42,115 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-19 00:16:42,580 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:16:45,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:16:45,541 INFO L93 Difference]: Finished difference Result 5471 states and 6670 transitions. [2020-08-19 00:16:45,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 00:16:45,542 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 311 [2020-08-19 00:16:45,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:16:45,559 INFO L225 Difference]: With dead ends: 5471 [2020-08-19 00:16:45,559 INFO L226 Difference]: Without dead ends: 3307 [2020-08-19 00:16:45,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-19 00:16:45,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3307 states. [2020-08-19 00:16:46,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3307 to 2847. [2020-08-19 00:16:46,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2847 states. [2020-08-19 00:16:46,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2847 states to 2847 states and 3387 transitions. [2020-08-19 00:16:46,142 INFO L78 Accepts]: Start accepts. Automaton has 2847 states and 3387 transitions. Word has length 311 [2020-08-19 00:16:46,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:16:46,144 INFO L479 AbstractCegarLoop]: Abstraction has 2847 states and 3387 transitions. [2020-08-19 00:16:46,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 00:16:46,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2847 states and 3387 transitions. [2020-08-19 00:16:46,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-08-19 00:16:46,159 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:16:46,159 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 00:16:46,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 00:16:46,160 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:16:46,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:16:46,160 INFO L82 PathProgramCache]: Analyzing trace with hash -547150695, now seen corresponding path program 1 times [2020-08-19 00:16:46,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:16:46,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646336435] [2020-08-19 00:16:46,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:16:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,629 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:16:46,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:16:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:16:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:16:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:16:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:16:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:16:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 00:16:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:16:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:46,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:16:46,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:46,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:16:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 00:16:46,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:46,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 00:16:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:46,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:16:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 00:16:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:46,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 00:16:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:16:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:46,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:16:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 00:16:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:16:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 00:16:46,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 00:16:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 00:16:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-19 00:16:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-19 00:16:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:46,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-19 00:16:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:46,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:47,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:47,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:16:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:47,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:47,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:47,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:16:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:47,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-08-19 00:16:47,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:47,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-08-19 00:16:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:47,128 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 91 proven. 38 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-08-19 00:16:47,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646336435] [2020-08-19 00:16:47,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:16:47,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 00:16:47,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283550825] [2020-08-19 00:16:47,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 00:16:47,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:16:47,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 00:16:47,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-19 00:16:47,132 INFO L87 Difference]: Start difference. First operand 2847 states and 3387 transitions. Second operand 16 states. [2020-08-19 00:16:48,009 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:16:48,344 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:16:48,606 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:16:48,854 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:16:49,614 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:16:50,757 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:16:51,015 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:16:51,436 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:16:52,171 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:16:53,057 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 191