/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 21:38:52,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:38:52,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:38:52,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:38:52,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:38:52,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:38:52,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:38:52,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:38:52,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:38:52,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:38:52,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:38:52,974 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:38:52,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:38:52,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:38:52,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:38:52,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:38:52,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:38:52,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:38:52,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:38:52,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:38:52,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:38:52,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:38:52,988 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:38:52,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:38:52,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 21:38:52,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 21:38:52,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 21:38:52,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 21:38:52,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 21:38:52,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 21:38:52,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 21:38:52,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 21:38:52,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 21:38:52,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 21:38:52,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 21:38:52,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 21:38:53,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 21:38:53,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 21:38:53,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:38:53,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:38:53,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:38:53,004 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 [2020-08-27 21:38:53,030 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:38:53,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:38:53,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:38:53,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:38:53,033 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:38:53,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:38:53,033 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:38:53,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:38:53,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:38:53,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:38:53,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:38:53,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:38:53,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:38:53,035 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:38:53,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:38:53,035 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:38:53,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:38:53,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:38:53,036 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:38:53,036 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:38:53,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:38:53,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:38:53,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:38:53,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:38:53,037 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:38:53,037 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:38:53,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:38:53,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:38:53,038 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:38:53,038 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 -> false [2020-08-27 21:38:53,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:38:53,537 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:38:53,541 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:38:53,542 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:38:53,543 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:38:53,544 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c [2020-08-27 21:38:53,612 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/480cdfb29/1f31dff4da884e859e110f1986261b94/FLAGb18039b18 [2020-08-27 21:38:54,233 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:38:54,234 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c [2020-08-27 21:38:54,251 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/480cdfb29/1f31dff4da884e859e110f1986261b94/FLAGb18039b18 [2020-08-27 21:38:54,455 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/480cdfb29/1f31dff4da884e859e110f1986261b94 [2020-08-27 21:38:54,468 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:38:54,470 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:38:54,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:38:54,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:38:54,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:38:54,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:38:54" (1/1) ... [2020-08-27 21:38:54,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be095dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:54, skipping insertion in model container [2020-08-27 21:38:54,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:38:54" (1/1) ... [2020-08-27 21:38:54,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:38:54,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:38:55,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:38:55,059 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:38:55,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:38:55,216 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:38:55,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:55 WrapperNode [2020-08-27 21:38:55,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:38:55,217 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:38:55,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:38:55,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:38:55,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:55" (1/1) ... [2020-08-27 21:38:55,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:55" (1/1) ... [2020-08-27 21:38:55,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:55" (1/1) ... [2020-08-27 21:38:55,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:55" (1/1) ... [2020-08-27 21:38:55,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:55" (1/1) ... [2020-08-27 21:38:55,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:55" (1/1) ... [2020-08-27 21:38:55,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:55" (1/1) ... [2020-08-27 21:38:55,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:38:55,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:38:55,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:38:55,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:38:55,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:55" (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 [2020-08-27 21:38:55,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:38:55,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:38:55,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-27 21:38:55,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-27 21:38:55,392 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-27 21:38:55,392 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-27 21:38:55,392 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-27 21:38:55,392 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-27 21:38:55,393 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-27 21:38:55,393 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-27 21:38:55,393 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-27 21:38:55,393 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-27 21:38:55,393 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-27 21:38:55,394 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-27 21:38:55,394 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-27 21:38:55,394 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-27 21:38:55,394 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-27 21:38:55,394 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-27 21:38:55,395 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-27 21:38:55,395 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-27 21:38:55,395 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-27 21:38:55,395 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-27 21:38:55,396 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-27 21:38:55,396 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-27 21:38:55,396 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-27 21:38:55,396 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-27 21:38:55,396 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-27 21:38:55,396 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-27 21:38:55,397 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-27 21:38:55,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-27 21:38:55,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-27 21:38:55,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-27 21:38:55,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-27 21:38:55,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-27 21:38:55,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-27 21:38:55,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-27 21:38:55,398 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-27 21:38:55,398 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-27 21:38:55,398 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-27 21:38:55,398 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-27 21:38:55,399 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:38:55,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:38:55,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-27 21:38:55,399 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-27 21:38:55,399 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-27 21:38:55,399 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-27 21:38:55,400 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-27 21:38:55,400 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-27 21:38:55,400 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-27 21:38:55,400 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-27 21:38:55,400 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-27 21:38:55,400 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-27 21:38:55,401 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-27 21:38:55,401 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-27 21:38:55,401 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-27 21:38:55,401 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-27 21:38:55,401 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-27 21:38:55,401 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-27 21:38:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-27 21:38:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-27 21:38:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-27 21:38:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-27 21:38:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-27 21:38:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-27 21:38:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-27 21:38:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-27 21:38:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-27 21:38:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-27 21:38:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-27 21:38:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-27 21:38:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-27 21:38:55,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-27 21:38:55,404 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-27 21:38:55,404 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-27 21:38:55,404 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-27 21:38:55,404 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-27 21:38:55,404 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-27 21:38:55,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-27 21:38:55,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-27 21:38:55,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-27 21:38:55,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-27 21:38:55,405 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-27 21:38:55,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 21:38:55,406 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-27 21:38:55,406 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-27 21:38:55,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-27 21:38:55,406 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-27 21:38:55,406 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-27 21:38:55,406 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-27 21:38:55,407 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-27 21:38:55,407 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-27 21:38:55,407 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-27 21:38:55,407 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:38:55,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:38:55,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-27 21:38:55,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:38:56,496 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:38:56,497 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-27 21:38:56,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:38:56 BoogieIcfgContainer [2020-08-27 21:38:56,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:38:56,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:38:56,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:38:56,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:38:56,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:38:54" (1/3) ... [2020-08-27 21:38:56,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f7e1e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:38:56, skipping insertion in model container [2020-08-27 21:38:56,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:55" (2/3) ... [2020-08-27 21:38:56,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f7e1e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:38:56, skipping insertion in model container [2020-08-27 21:38:56,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:38:56" (3/3) ... [2020-08-27 21:38:56,513 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product53.cil.c [2020-08-27 21:38:56,525 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:38:56,536 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 21:38:56,559 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 21:38:56,591 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:38:56,591 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:38:56,591 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:38:56,591 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:38:56,592 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:38:56,592 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:38:56,592 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:38:56,592 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:38:56,618 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2020-08-27 21:38:56,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-27 21:38:56,637 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:38:56,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:38:56,639 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:38:56,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:38:56,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1930033303, now seen corresponding path program 1 times [2020-08-27 21:38:56,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:38:56,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252546158] [2020-08-27 21:38:56,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:38:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:57,448 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:38:57,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:38:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:57,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:38:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:57,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:38:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:57,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:38:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:57,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:38:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:57,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:38:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:57,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:38:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:57,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-27 21:38:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:57,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:38:57,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252546158] [2020-08-27 21:38:57,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:38:57,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-27 21:38:57,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423363971] [2020-08-27 21:38:57,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-27 21:38:57,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:38:57,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-27 21:38:57,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-27 21:38:57,657 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 3 states. [2020-08-27 21:38:58,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:38:58,936 INFO L93 Difference]: Finished difference Result 341 states and 445 transitions. [2020-08-27 21:38:58,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-27 21:38:58,939 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-27 21:38:58,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:38:58,956 INFO L225 Difference]: With dead ends: 341 [2020-08-27 21:38:58,956 INFO L226 Difference]: Without dead ends: 183 [2020-08-27 21:38:58,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-27 21:38:58,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-08-27 21:38:59,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 149. [2020-08-27 21:38:59,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-08-27 21:38:59,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 177 transitions. [2020-08-27 21:38:59,064 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 177 transitions. Word has length 52 [2020-08-27 21:38:59,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:38:59,065 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 177 transitions. [2020-08-27 21:38:59,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-27 21:38:59,065 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 177 transitions. [2020-08-27 21:38:59,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-27 21:38:59,070 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:38:59,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:38:59,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:38:59,071 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:38:59,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:38:59,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1692135718, now seen corresponding path program 1 times [2020-08-27 21:38:59,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:38:59,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700010913] [2020-08-27 21:38:59,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:38:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:59,418 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:38:59,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:38:59,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:59,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:38:59,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:59,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:38:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:59,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:38:59,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:59,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:38:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:59,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-27 21:38:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:59,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-27 21:38:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:59,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-27 21:38:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:59,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:38:59,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700010913] [2020-08-27 21:38:59,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:38:59,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 21:38:59,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273723874] [2020-08-27 21:38:59,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 21:38:59,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:38:59,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 21:38:59,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:38:59,489 INFO L87 Difference]: Start difference. First operand 149 states and 177 transitions. Second operand 4 states. [2020-08-27 21:38:59,959 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:01,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:01,025 INFO L93 Difference]: Finished difference Result 274 states and 336 transitions. [2020-08-27 21:39:01,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-27 21:39:01,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-27 21:39:01,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:01,031 INFO L225 Difference]: With dead ends: 274 [2020-08-27 21:39:01,032 INFO L226 Difference]: Without dead ends: 167 [2020-08-27 21:39:01,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-27 21:39:01,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-08-27 21:39:01,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 140. [2020-08-27 21:39:01,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-27 21:39:01,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 165 transitions. [2020-08-27 21:39:01,106 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 165 transitions. Word has length 53 [2020-08-27 21:39:01,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:01,107 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 165 transitions. [2020-08-27 21:39:01,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 21:39:01,107 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 165 transitions. [2020-08-27 21:39:01,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-27 21:39:01,109 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:01,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:39:01,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:39:01,110 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:01,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:01,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1292389066, now seen corresponding path program 1 times [2020-08-27 21:39:01,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:01,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298294270] [2020-08-27 21:39:01,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:01,460 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:01,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:01,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:01,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:01,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:01,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:01,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:39:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:01,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-27 21:39:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:01,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-27 21:39:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:01,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:39:01,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298294270] [2020-08-27 21:39:01,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:39:01,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-27 21:39:01,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118093180] [2020-08-27 21:39:01,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-27 21:39:01,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:01,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-27 21:39:01,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-27 21:39:01,566 INFO L87 Difference]: Start difference. First operand 140 states and 165 transitions. Second operand 8 states. [2020-08-27 21:39:01,980 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:02,371 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:02,682 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:02,972 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:04,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:04,439 INFO L93 Difference]: Finished difference Result 283 states and 350 transitions. [2020-08-27 21:39:04,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-27 21:39:04,440 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-27 21:39:04,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:04,444 INFO L225 Difference]: With dead ends: 283 [2020-08-27 21:39:04,444 INFO L226 Difference]: Without dead ends: 167 [2020-08-27 21:39:04,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:39:04,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-08-27 21:39:04,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 140. [2020-08-27 21:39:04,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-27 21:39:04,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 164 transitions. [2020-08-27 21:39:04,485 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 164 transitions. Word has length 57 [2020-08-27 21:39:04,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:04,486 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 164 transitions. [2020-08-27 21:39:04,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-27 21:39:04,486 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 164 transitions. [2020-08-27 21:39:04,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-27 21:39:04,489 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:04,489 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:39:04,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-27 21:39:04,489 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:04,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:04,490 INFO L82 PathProgramCache]: Analyzing trace with hash 875217030, now seen corresponding path program 1 times [2020-08-27 21:39:04,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:04,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108840666] [2020-08-27 21:39:04,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:04,849 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:04,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:04,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:04,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:04,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:04,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:04,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:04,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-27 21:39:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:04,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:04,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:04,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:04,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-27 21:39:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:04,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 21:39:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:04,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-27 21:39:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:04,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:39:04,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108840666] [2020-08-27 21:39:04,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:39:04,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-27 21:39:04,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300316898] [2020-08-27 21:39:04,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-27 21:39:05,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:05,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-27 21:39:05,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-27 21:39:05,000 INFO L87 Difference]: Start difference. First operand 140 states and 164 transitions. Second operand 6 states. [2020-08-27 21:39:05,397 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:06,849 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:07,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:07,778 INFO L93 Difference]: Finished difference Result 393 states and 487 transitions. [2020-08-27 21:39:07,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-27 21:39:07,779 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-08-27 21:39:07,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:07,784 INFO L225 Difference]: With dead ends: 393 [2020-08-27 21:39:07,784 INFO L226 Difference]: Without dead ends: 277 [2020-08-27 21:39:07,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-27 21:39:07,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-08-27 21:39:07,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 236. [2020-08-27 21:39:07,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-08-27 21:39:07,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 269 transitions. [2020-08-27 21:39:07,840 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 269 transitions. Word has length 75 [2020-08-27 21:39:07,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:07,841 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 269 transitions. [2020-08-27 21:39:07,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-27 21:39:07,841 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 269 transitions. [2020-08-27 21:39:07,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-27 21:39:07,843 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:07,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:39:07,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-27 21:39:07,844 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:07,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:07,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1332654256, now seen corresponding path program 1 times [2020-08-27 21:39:07,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:07,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754198623] [2020-08-27 21:39:07,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:07,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,258 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:08,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:08,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-27 21:39:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:39:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-27 21:39:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-27 21:39:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 21:39:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:39:08,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754198623] [2020-08-27 21:39:08,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:39:08,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-27 21:39:08,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497314494] [2020-08-27 21:39:08,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-27 21:39:08,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:08,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-27 21:39:08,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-27 21:39:08,417 INFO L87 Difference]: Start difference. First operand 236 states and 269 transitions. Second operand 8 states. [2020-08-27 21:39:08,821 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:10,391 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:10,763 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:11,086 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:11,396 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:12,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:12,481 INFO L93 Difference]: Finished difference Result 614 states and 761 transitions. [2020-08-27 21:39:12,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-27 21:39:12,482 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-08-27 21:39:12,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:12,485 INFO L225 Difference]: With dead ends: 614 [2020-08-27 21:39:12,485 INFO L226 Difference]: Without dead ends: 402 [2020-08-27 21:39:12,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-27 21:39:12,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-08-27 21:39:12,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 362. [2020-08-27 21:39:12,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-08-27 21:39:12,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 420 transitions. [2020-08-27 21:39:12,565 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 420 transitions. Word has length 89 [2020-08-27 21:39:12,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:12,565 INFO L479 AbstractCegarLoop]: Abstraction has 362 states and 420 transitions. [2020-08-27 21:39:12,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-27 21:39:12,566 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 420 transitions. [2020-08-27 21:39:12,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-27 21:39:12,567 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:12,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:39:12,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-27 21:39:12,568 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:12,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:12,568 INFO L82 PathProgramCache]: Analyzing trace with hash -920967306, now seen corresponding path program 1 times [2020-08-27 21:39:12,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:12,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723458346] [2020-08-27 21:39:12,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:12,978 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:12,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:13,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:13,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:13,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:13,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:13,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:39:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:13,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-27 21:39:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:13,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:13,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:13,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:13,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:13,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:39:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:13,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-27 21:39:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:13,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-27 21:39:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:13,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-27 21:39:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:13,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:39:13,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723458346] [2020-08-27 21:39:13,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:39:13,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 21:39:13,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658429422] [2020-08-27 21:39:13,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 21:39:13,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:13,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 21:39:13,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-27 21:39:13,142 INFO L87 Difference]: Start difference. First operand 362 states and 420 transitions. Second operand 9 states. [2020-08-27 21:39:13,583 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:14,221 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:16,030 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:18,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:18,358 INFO L93 Difference]: Finished difference Result 935 states and 1195 transitions. [2020-08-27 21:39:18,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-27 21:39:18,359 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-27 21:39:18,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:18,369 INFO L225 Difference]: With dead ends: 935 [2020-08-27 21:39:18,370 INFO L226 Difference]: Without dead ends: 712 [2020-08-27 21:39:18,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-27 21:39:18,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2020-08-27 21:39:18,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 646. [2020-08-27 21:39:18,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-08-27 21:39:18,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 781 transitions. [2020-08-27 21:39:18,527 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 781 transitions. Word has length 93 [2020-08-27 21:39:18,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:18,527 INFO L479 AbstractCegarLoop]: Abstraction has 646 states and 781 transitions. [2020-08-27 21:39:18,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 21:39:18,528 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 781 transitions. [2020-08-27 21:39:18,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-27 21:39:18,529 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:18,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:39:18,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-27 21:39:18,530 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:18,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:18,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1438339703, now seen corresponding path program 1 times [2020-08-27 21:39:18,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:18,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283866379] [2020-08-27 21:39:18,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:18,834 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:18,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:18,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:18,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:18,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:18,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:18,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:39:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:18,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-27 21:39:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:18,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:18,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:18,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:18,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:18,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:39:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:18,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-27 21:39:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:18,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-27 21:39:18,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:18,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-27 21:39:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:18,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:39:18,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283866379] [2020-08-27 21:39:18,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:39:18,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-27 21:39:18,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039861532] [2020-08-27 21:39:18,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-27 21:39:18,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:18,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-27 21:39:18,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-27 21:39:18,993 INFO L87 Difference]: Start difference. First operand 646 states and 781 transitions. Second operand 8 states. [2020-08-27 21:39:19,928 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:20,246 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:20,568 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:21,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:21,934 INFO L93 Difference]: Finished difference Result 1191 states and 1490 transitions. [2020-08-27 21:39:21,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-27 21:39:21,942 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-27 21:39:21,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:21,948 INFO L225 Difference]: With dead ends: 1191 [2020-08-27 21:39:21,949 INFO L226 Difference]: Without dead ends: 688 [2020-08-27 21:39:21,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:39:21,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2020-08-27 21:39:22,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 646. [2020-08-27 21:39:22,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-08-27 21:39:22,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 780 transitions. [2020-08-27 21:39:22,088 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 780 transitions. Word has length 93 [2020-08-27 21:39:22,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:22,088 INFO L479 AbstractCegarLoop]: Abstraction has 646 states and 780 transitions. [2020-08-27 21:39:22,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-27 21:39:22,089 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 780 transitions. [2020-08-27 21:39:22,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-27 21:39:22,090 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:22,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:39:22,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-27 21:39:22,091 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:22,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:22,091 INFO L82 PathProgramCache]: Analyzing trace with hash 2097871225, now seen corresponding path program 1 times [2020-08-27 21:39:22,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:22,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832323284] [2020-08-27 21:39:22,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:22,430 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:22,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:22,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:22,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:22,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:22,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:22,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:22,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:22,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:22,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:39:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:22,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-27 21:39:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:22,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:22,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:22,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:22,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:22,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:39:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:22,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-27 21:39:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:22,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-27 21:39:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:22,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-27 21:39:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:22,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:39:22,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832323284] [2020-08-27 21:39:22,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:39:22,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-27 21:39:22,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159326139] [2020-08-27 21:39:22,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 21:39:22,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:22,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 21:39:22,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:39:22,615 INFO L87 Difference]: Start difference. First operand 646 states and 780 transitions. Second operand 12 states. [2020-08-27 21:39:23,247 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:23,549 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:23,841 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:24,637 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:24,970 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:39:25,308 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:25,597 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:27,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:27,035 INFO L93 Difference]: Finished difference Result 1270 states and 1579 transitions. [2020-08-27 21:39:27,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-27 21:39:27,036 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 93 [2020-08-27 21:39:27,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:27,041 INFO L225 Difference]: With dead ends: 1270 [2020-08-27 21:39:27,041 INFO L226 Difference]: Without dead ends: 648 [2020-08-27 21:39:27,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-27 21:39:27,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-08-27 21:39:27,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 617. [2020-08-27 21:39:27,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-27 21:39:27,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 740 transitions. [2020-08-27 21:39:27,179 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 740 transitions. Word has length 93 [2020-08-27 21:39:27,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:27,180 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 740 transitions. [2020-08-27 21:39:27,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 21:39:27,180 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 740 transitions. [2020-08-27 21:39:27,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-27 21:39:27,183 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:27,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:39:27,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-27 21:39:27,184 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:27,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:27,184 INFO L82 PathProgramCache]: Analyzing trace with hash 791892564, now seen corresponding path program 1 times [2020-08-27 21:39:27,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:27,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47327383] [2020-08-27 21:39:27,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:27,563 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:27,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:27,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:27,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:27,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:27,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:27,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:39:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:27,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-27 21:39:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:27,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:27,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:27,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:27,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:27,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:27,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:39:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:27,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:39:27,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:27,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-27 21:39:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:27,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-27 21:39:27,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:27,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:39:27,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47327383] [2020-08-27 21:39:27,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:39:27,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-27 21:39:27,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026478953] [2020-08-27 21:39:27,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-27 21:39:27,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:27,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-27 21:39:27,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-27 21:39:27,801 INFO L87 Difference]: Start difference. First operand 617 states and 740 transitions. Second operand 13 states. [2020-08-27 21:39:28,573 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:28,885 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:29,192 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:30,375 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:31,115 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:31,544 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:39:31,896 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:39:32,684 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:33,103 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:33,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:33,573 INFO L93 Difference]: Finished difference Result 1241 states and 1503 transitions. [2020-08-27 21:39:33,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-27 21:39:33,574 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 94 [2020-08-27 21:39:33,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:33,579 INFO L225 Difference]: With dead ends: 1241 [2020-08-27 21:39:33,579 INFO L226 Difference]: Without dead ends: 648 [2020-08-27 21:39:33,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2020-08-27 21:39:33,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-08-27 21:39:33,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 617. [2020-08-27 21:39:33,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-27 21:39:33,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 724 transitions. [2020-08-27 21:39:33,675 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 724 transitions. Word has length 94 [2020-08-27 21:39:33,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:33,676 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 724 transitions. [2020-08-27 21:39:33,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-27 21:39:33,676 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 724 transitions. [2020-08-27 21:39:33,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-08-27 21:39:33,678 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:33,679 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:39:33,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-27 21:39:33,679 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:33,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:33,680 INFO L82 PathProgramCache]: Analyzing trace with hash -361137762, now seen corresponding path program 1 times [2020-08-27 21:39:33,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:33,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445631334] [2020-08-27 21:39:33,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:34,001 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:34,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:34,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:34,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:34,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:34,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:34,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:34,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:39:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:34,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:34,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:34,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:34,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:34,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:34,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:39:34,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:34,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-27 21:39:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:34,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:34,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-27 21:39:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:34,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-27 21:39:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:34,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:34,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:34,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:34,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-27 21:39:34,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:34,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-27 21:39:34,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:34,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-27 21:39:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:34,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 21:39:34,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:34,270 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-27 21:39:34,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445631334] [2020-08-27 21:39:34,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:39:34,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-27 21:39:34,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48236802] [2020-08-27 21:39:34,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-27 21:39:34,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:34,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-27 21:39:34,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-27 21:39:34,274 INFO L87 Difference]: Start difference. First operand 617 states and 724 transitions. Second operand 10 states. [2020-08-27 21:39:35,599 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:35,937 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:39:36,202 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:36,485 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:37,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:37,682 INFO L93 Difference]: Finished difference Result 1154 states and 1382 transitions. [2020-08-27 21:39:37,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-27 21:39:37,689 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 137 [2020-08-27 21:39:37,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:37,693 INFO L225 Difference]: With dead ends: 1154 [2020-08-27 21:39:37,694 INFO L226 Difference]: Without dead ends: 636 [2020-08-27 21:39:37,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-27 21:39:37,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2020-08-27 21:39:37,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 617. [2020-08-27 21:39:37,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-27 21:39:37,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 722 transitions. [2020-08-27 21:39:37,815 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 722 transitions. Word has length 137 [2020-08-27 21:39:37,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:37,815 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 722 transitions. [2020-08-27 21:39:37,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-27 21:39:37,815 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 722 transitions. [2020-08-27 21:39:37,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-08-27 21:39:37,818 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:37,818 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:39:37,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-27 21:39:37,819 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:37,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:37,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1515345056, now seen corresponding path program 1 times [2020-08-27 21:39:37,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:37,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405014209] [2020-08-27 21:39:37,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,253 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:38,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:38,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:38,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:39:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:39:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-27 21:39:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-27 21:39:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-27 21:39:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-27 21:39:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-27 21:39:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-27 21:39:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 21:39:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,537 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-27 21:39:38,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405014209] [2020-08-27 21:39:38,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:39:38,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-27 21:39:38,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112204415] [2020-08-27 21:39:38,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 21:39:38,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:38,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 21:39:38,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:39:38,543 INFO L87 Difference]: Start difference. First operand 617 states and 722 transitions. Second operand 12 states. [2020-08-27 21:39:39,186 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:39,496 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:39,797 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:40,507 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:40,813 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:41,098 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:42,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:42,425 INFO L93 Difference]: Finished difference Result 1066 states and 1276 transitions. [2020-08-27 21:39:42,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-27 21:39:42,426 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 137 [2020-08-27 21:39:42,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:42,429 INFO L225 Difference]: With dead ends: 1066 [2020-08-27 21:39:42,429 INFO L226 Difference]: Without dead ends: 543 [2020-08-27 21:39:42,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-27 21:39:42,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2020-08-27 21:39:42,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 524. [2020-08-27 21:39:42,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-08-27 21:39:42,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 611 transitions. [2020-08-27 21:39:42,528 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 611 transitions. Word has length 137 [2020-08-27 21:39:42,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:42,528 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 611 transitions. [2020-08-27 21:39:42,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 21:39:42,529 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 611 transitions. [2020-08-27 21:39:42,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-27 21:39:42,532 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:42,533 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:39:42,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-27 21:39:42,533 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:42,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:42,534 INFO L82 PathProgramCache]: Analyzing trace with hash -834613817, now seen corresponding path program 1 times [2020-08-27 21:39:42,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:42,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177524467] [2020-08-27 21:39:42,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:42,914 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:42,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:42,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:42,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:42,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:42,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:42,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:39:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:42,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-27 21:39:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:43,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:43,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:43,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:43,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:43,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:43,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:43,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:39:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:43,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-27 21:39:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:43,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:43,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-27 21:39:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:43,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-27 21:39:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:43,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:43,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:43,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-27 21:39:43,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:43,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-27 21:39:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:43,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-27 21:39:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:43,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-27 21:39:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:43,167 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-27 21:39:43,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177524467] [2020-08-27 21:39:43,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:39:43,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-27 21:39:43,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781793869] [2020-08-27 21:39:43,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-27 21:39:43,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:43,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-27 21:39:43,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-27 21:39:43,173 INFO L87 Difference]: Start difference. First operand 524 states and 611 transitions. Second operand 11 states. [2020-08-27 21:39:43,661 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:44,361 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:45,399 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:46,018 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-27 21:39:46,602 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-27 21:39:46,885 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:39:48,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:48,709 INFO L93 Difference]: Finished difference Result 1550 states and 1871 transitions. [2020-08-27 21:39:48,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-27 21:39:48,710 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 141 [2020-08-27 21:39:48,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:48,716 INFO L225 Difference]: With dead ends: 1550 [2020-08-27 21:39:48,716 INFO L226 Difference]: Without dead ends: 1050 [2020-08-27 21:39:48,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-08-27 21:39:48,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2020-08-27 21:39:48,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 1021. [2020-08-27 21:39:48,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1021 states. [2020-08-27 21:39:48,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1176 transitions. [2020-08-27 21:39:48,885 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1176 transitions. Word has length 141 [2020-08-27 21:39:48,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:48,886 INFO L479 AbstractCegarLoop]: Abstraction has 1021 states and 1176 transitions. [2020-08-27 21:39:48,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-27 21:39:48,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1176 transitions. [2020-08-27 21:39:48,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-08-27 21:39:48,888 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:48,889 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-08-27 21:39:48,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-27 21:39:48,889 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:48,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:48,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1626419797, now seen corresponding path program 1 times [2020-08-27 21:39:48,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:48,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234806865] [2020-08-27 21:39:48,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:49,269 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:49,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:49,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:49,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:49,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:49,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:49,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:49,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:39:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:49,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-27 21:39:49,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:49,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-27 21:39:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:49,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:49,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:49,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:49,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:49,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:49,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:49,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:49,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:39:49,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:49,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-27 21:39:49,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:49,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:49,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:49,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 21:39:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:49,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-27 21:39:49,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:49,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:49,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:49,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:49,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-27 21:39:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:49,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-27 21:39:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:49,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-27 21:39:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:49,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-27 21:39:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:49,525 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-27 21:39:49,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234806865] [2020-08-27 21:39:49,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:39:49,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-27 21:39:49,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952599462] [2020-08-27 21:39:49,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-27 21:39:49,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:49,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-27 21:39:49,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-27 21:39:49,528 INFO L87 Difference]: Start difference. First operand 1021 states and 1176 transitions. Second operand 15 states. [2020-08-27 21:39:50,244 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:50,562 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:50,869 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187