/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_spec2_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 10:21:16,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 10:21:16,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 10:21:16,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 10:21:16,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 10:21:16,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 10:21:16,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 10:21:16,976 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 10:21:16,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 10:21:16,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 10:21:16,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 10:21:16,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 10:21:16,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 10:21:16,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 10:21:16,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 10:21:16,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 10:21:16,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 10:21:16,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 10:21:16,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 10:21:16,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 10:21:16,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 10:21:16,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 10:21:16,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 10:21:16,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 10:21:16,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 10:21:16,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 10:21:16,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 10:21:16,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 10:21:16,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 10:21:17,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 10:21:17,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 10:21:17,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 10:21:17,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 10:21:17,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 10:21:17,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 10:21:17,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 10:21:17,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 10:21:17,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 10:21:17,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 10:21:17,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 10:21:17,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 10:21:17,010 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 [2020-08-18 10:21:17,032 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 10:21:17,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 10:21:17,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 10:21:17,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 10:21:17,034 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 10:21:17,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 10:21:17,034 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 10:21:17,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 10:21:17,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 10:21:17,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 10:21:17,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 10:21:17,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 10:21:17,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 10:21:17,035 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 10:21:17,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 10:21:17,036 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 10:21:17,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 10:21:17,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 10:21:17,036 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 10:21:17,036 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 10:21:17,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 10:21:17,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:21:17,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 10:21:17,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 10:21:17,038 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 10:21:17,038 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 10:21:17,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 10:21:17,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 10:21:17,038 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 10:21:17,038 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 [2020-08-18 10:21:17,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 10:21:17,387 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 10:21:17,390 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 10:21:17,392 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 10:21:17,393 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 10:21:17,393 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product62.cil.c [2020-08-18 10:21:17,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6191179bb/4ecd60ada24e4cf6b7d59a3612fdbaee/FLAG1767e8d6d [2020-08-18 10:21:18,015 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 10:21:18,016 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product62.cil.c [2020-08-18 10:21:18,030 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6191179bb/4ecd60ada24e4cf6b7d59a3612fdbaee/FLAG1767e8d6d [2020-08-18 10:21:18,325 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6191179bb/4ecd60ada24e4cf6b7d59a3612fdbaee [2020-08-18 10:21:18,335 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 10:21:18,337 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 10:21:18,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 10:21:18,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 10:21:18,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 10:21:18,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:21:18" (1/1) ... [2020-08-18 10:21:18,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a4700e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:18, skipping insertion in model container [2020-08-18 10:21:18,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:21:18" (1/1) ... [2020-08-18 10:21:18,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 10:21:18,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 10:21:18,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:21:18,910 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 10:21:19,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:21:19,105 INFO L208 MainTranslator]: Completed translation [2020-08-18 10:21:19,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:19 WrapperNode [2020-08-18 10:21:19,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 10:21:19,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 10:21:19,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 10:21:19,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 10:21:19,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:19" (1/1) ... [2020-08-18 10:21:19,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:19" (1/1) ... [2020-08-18 10:21:19,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:19" (1/1) ... [2020-08-18 10:21:19,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:19" (1/1) ... [2020-08-18 10:21:19,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:19" (1/1) ... [2020-08-18 10:21:19,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:19" (1/1) ... [2020-08-18 10:21:19,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:19" (1/1) ... [2020-08-18 10:21:19,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 10:21:19,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 10:21:19,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 10:21:19,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 10:21:19,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:19" (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 [2020-08-18 10:21:19,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 10:21:19,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 10:21:19,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 10:21:19,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 10:21:19,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 10:21:19,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 10:21:19,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 10:21:19,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 10:21:19,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 10:21:19,326 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 10:21:19,326 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 10:21:19,327 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 10:21:19,328 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 10:21:19,328 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 10:21:19,328 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 10:21:19,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 10:21:19,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 10:21:19,329 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 10:21:19,330 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 10:21:19,330 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 10:21:19,330 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 10:21:19,330 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 10:21:19,330 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 10:21:19,330 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 10:21:19,331 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 10:21:19,332 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 10:21:19,332 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 10:21:19,332 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 10:21:19,332 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 10:21:19,332 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 10:21:19,333 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 10:21:19,333 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 10:21:19,333 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 10:21:19,333 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 10:21:19,334 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 10:21:19,334 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 10:21:19,334 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 10:21:19,334 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 10:21:19,334 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 10:21:19,334 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 10:21:19,334 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 10:21:19,335 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 10:21:19,335 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 10:21:19,335 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 10:21:19,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 10:21:19,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 10:21:19,336 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 10:21:19,336 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 10:21:19,336 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 10:21:19,336 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 10:21:19,336 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 10:21:19,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 10:21:19,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 10:21:19,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 10:21:19,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 10:21:19,337 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 10:21:19,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 10:21:19,338 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 10:21:19,338 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 10:21:19,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 10:21:19,339 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 10:21:19,339 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 10:21:19,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 10:21:19,340 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 10:21:19,340 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 10:21:19,340 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 10:21:19,340 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 10:21:19,340 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 10:21:19,341 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 10:21:19,341 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 10:21:19,341 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 10:21:19,341 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 10:21:19,342 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 10:21:19,342 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 10:21:19,342 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 10:21:19,343 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 10:21:19,343 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 10:21:19,343 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 10:21:19,344 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 10:21:19,344 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 10:21:19,345 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 10:21:19,345 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 10:21:19,345 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 10:21:19,345 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 10:21:19,345 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 10:21:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 10:21:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 10:21:19,347 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 10:21:19,347 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 10:21:19,347 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 10:21:19,347 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 10:21:19,347 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 10:21:19,348 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 10:21:19,348 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 10:21:19,348 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 10:21:19,348 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 10:21:19,348 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 10:21:19,349 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 10:21:19,349 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 10:21:19,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 10:21:19,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 10:21:19,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 10:21:20,561 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 10:21:20,561 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 10:21:20,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:21:20 BoogieIcfgContainer [2020-08-18 10:21:20,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 10:21:20,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 10:21:20,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 10:21:20,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 10:21:20,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:21:18" (1/3) ... [2020-08-18 10:21:20,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@542a44f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:21:20, skipping insertion in model container [2020-08-18 10:21:20,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:19" (2/3) ... [2020-08-18 10:21:20,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@542a44f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:21:20, skipping insertion in model container [2020-08-18 10:21:20,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:21:20" (3/3) ... [2020-08-18 10:21:20,584 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product62.cil.c [2020-08-18 10:21:20,596 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 10:21:20,609 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 10:21:20,627 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 10:21:20,666 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 10:21:20,667 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 10:21:20,667 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 10:21:20,667 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 10:21:20,667 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 10:21:20,668 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 10:21:20,668 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 10:21:20,669 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 10:21:20,699 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2020-08-18 10:21:20,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 10:21:20,715 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:20,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:21:20,717 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:20,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:20,725 INFO L82 PathProgramCache]: Analyzing trace with hash -519940638, now seen corresponding path program 1 times [2020-08-18 10:21:20,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:20,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209436231] [2020-08-18 10:21:20,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:21,553 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:21:21,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:21,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:21,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:21,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:21,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:21,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:21,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:21,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:21:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:21,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:21:21,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:21,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 10:21:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:21,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:21:21,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209436231] [2020-08-18 10:21:21,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:21,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 10:21:21,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609182992] [2020-08-18 10:21:21,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 10:21:21,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:21,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 10:21:21,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:21:21,710 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 4 states. [2020-08-18 10:21:23,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:23,124 INFO L93 Difference]: Finished difference Result 354 states and 460 transitions. [2020-08-18 10:21:23,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 10:21:23,127 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 10:21:23,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:23,143 INFO L225 Difference]: With dead ends: 354 [2020-08-18 10:21:23,143 INFO L226 Difference]: Without dead ends: 196 [2020-08-18 10:21:23,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:21:23,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-18 10:21:23,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 159. [2020-08-18 10:21:23,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-08-18 10:21:23,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 189 transitions. [2020-08-18 10:21:23,253 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 189 transitions. Word has length 51 [2020-08-18 10:21:23,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:23,254 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 189 transitions. [2020-08-18 10:21:23,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 10:21:23,254 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 189 transitions. [2020-08-18 10:21:23,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 10:21:23,258 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:23,258 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] [2020-08-18 10:21:23,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 10:21:23,259 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:23,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:23,259 INFO L82 PathProgramCache]: Analyzing trace with hash -183354494, now seen corresponding path program 1 times [2020-08-18 10:21:23,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:23,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679996236] [2020-08-18 10:21:23,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:23,558 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:21:23,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:23,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:23,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:23,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:23,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:23,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:21:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:23,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:21:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:23,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 10:21:23,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:23,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:21:23,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679996236] [2020-08-18 10:21:23,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:23,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 10:21:23,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282820664] [2020-08-18 10:21:23,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 10:21:23,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:23,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 10:21:23,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 10:21:23,616 INFO L87 Difference]: Start difference. First operand 159 states and 189 transitions. Second operand 5 states. [2020-08-18 10:21:24,065 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:21:25,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:25,165 INFO L93 Difference]: Finished difference Result 295 states and 367 transitions. [2020-08-18 10:21:25,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 10:21:25,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 10:21:25,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:25,171 INFO L225 Difference]: With dead ends: 295 [2020-08-18 10:21:25,171 INFO L226 Difference]: Without dead ends: 186 [2020-08-18 10:21:25,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 10:21:25,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-18 10:21:25,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 150. [2020-08-18 10:21:25,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-18 10:21:25,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 177 transitions. [2020-08-18 10:21:25,221 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 177 transitions. Word has length 52 [2020-08-18 10:21:25,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:25,221 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 177 transitions. [2020-08-18 10:21:25,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 10:21:25,222 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 177 transitions. [2020-08-18 10:21:25,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 10:21:25,224 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:25,225 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] [2020-08-18 10:21:25,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 10:21:25,225 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:25,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:25,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1707012514, now seen corresponding path program 1 times [2020-08-18 10:21:25,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:25,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464615220] [2020-08-18 10:21:25,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:25,585 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:21:25,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:25,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:25,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:25,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:25,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:25,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:21:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:25,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 10:21:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:25,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 10:21:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:25,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:21:25,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464615220] [2020-08-18 10:21:25,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:25,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 10:21:25,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239873363] [2020-08-18 10:21:25,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 10:21:25,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:25,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 10:21:25,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:21:25,713 INFO L87 Difference]: Start difference. First operand 150 states and 177 transitions. Second operand 9 states. [2020-08-18 10:21:26,067 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:21:26,374 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:26,627 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:26,858 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:28,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:28,357 INFO L93 Difference]: Finished difference Result 308 states and 386 transitions. [2020-08-18 10:21:28,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 10:21:28,358 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-18 10:21:28,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:28,361 INFO L225 Difference]: With dead ends: 308 [2020-08-18 10:21:28,361 INFO L226 Difference]: Without dead ends: 186 [2020-08-18 10:21:28,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 10:21:28,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-18 10:21:28,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 150. [2020-08-18 10:21:28,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-18 10:21:28,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 176 transitions. [2020-08-18 10:21:28,408 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 176 transitions. Word has length 57 [2020-08-18 10:21:28,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:28,408 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 176 transitions. [2020-08-18 10:21:28,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 10:21:28,408 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 176 transitions. [2020-08-18 10:21:28,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-18 10:21:28,412 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:28,413 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] [2020-08-18 10:21:28,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 10:21:28,413 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:28,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:28,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1819519357, now seen corresponding path program 1 times [2020-08-18 10:21:28,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:28,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399938885] [2020-08-18 10:21:28,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:28,749 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:21:28,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:28,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:28,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:28,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:28,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:28,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:21:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:28,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:21:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:28,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:28,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:28,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:28,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 10:21:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:28,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 10:21:28,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:28,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:21:28,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399938885] [2020-08-18 10:21:28,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:28,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 10:21:28,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622574348] [2020-08-18 10:21:28,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 10:21:28,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:28,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 10:21:28,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 10:21:28,847 INFO L87 Difference]: Start difference. First operand 150 states and 176 transitions. Second operand 7 states. [2020-08-18 10:21:29,198 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:21:30,516 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:21:31,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:31,491 INFO L93 Difference]: Finished difference Result 418 states and 526 transitions. [2020-08-18 10:21:31,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 10:21:31,493 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 75 [2020-08-18 10:21:31,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:31,497 INFO L225 Difference]: With dead ends: 418 [2020-08-18 10:21:31,497 INFO L226 Difference]: Without dead ends: 296 [2020-08-18 10:21:31,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 10:21:31,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-08-18 10:21:31,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 247. [2020-08-18 10:21:31,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-08-18 10:21:31,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 282 transitions. [2020-08-18 10:21:31,566 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 282 transitions. Word has length 75 [2020-08-18 10:21:31,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:31,567 INFO L479 AbstractCegarLoop]: Abstraction has 247 states and 282 transitions. [2020-08-18 10:21:31,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 10:21:31,567 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 282 transitions. [2020-08-18 10:21:31,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-18 10:21:31,572 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:31,572 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] [2020-08-18 10:21:31,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 10:21:31,573 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:31,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:31,573 INFO L82 PathProgramCache]: Analyzing trace with hash 948942276, now seen corresponding path program 1 times [2020-08-18 10:21:31,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:31,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954371325] [2020-08-18 10:21:31,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:31,952 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:21:31,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:32,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:32,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:32,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:32,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:32,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:21:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:32,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:21:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:32,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:32,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:32,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:32,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:32,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:21:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:32,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 10:21:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:32,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 10:21:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:32,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:21:32,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954371325] [2020-08-18 10:21:32,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:32,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 10:21:32,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049767558] [2020-08-18 10:21:32,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 10:21:32,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:32,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 10:21:32,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:21:32,146 INFO L87 Difference]: Start difference. First operand 247 states and 282 transitions. Second operand 9 states. [2020-08-18 10:21:32,505 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:21:33,574 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:33,890 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:21:34,481 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:34,722 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:36,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:36,082 INFO L93 Difference]: Finished difference Result 737 states and 912 transitions. [2020-08-18 10:21:36,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 10:21:36,083 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-08-18 10:21:36,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:36,089 INFO L225 Difference]: With dead ends: 737 [2020-08-18 10:21:36,089 INFO L226 Difference]: Without dead ends: 518 [2020-08-18 10:21:36,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 10:21:36,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2020-08-18 10:21:36,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 442. [2020-08-18 10:21:36,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-08-18 10:21:36,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 504 transitions. [2020-08-18 10:21:36,221 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 504 transitions. Word has length 89 [2020-08-18 10:21:36,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:36,221 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 504 transitions. [2020-08-18 10:21:36,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 10:21:36,222 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 504 transitions. [2020-08-18 10:21:36,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 10:21:36,224 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:36,224 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] [2020-08-18 10:21:36,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 10:21:36,224 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:36,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:36,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1944159016, now seen corresponding path program 1 times [2020-08-18 10:21:36,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:36,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795473628] [2020-08-18 10:21:36,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,516 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:21:36,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:36,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:21:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 10:21:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:21:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:36,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:21:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 10:21:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 10:21:36,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:36,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:21:36,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795473628] [2020-08-18 10:21:36,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:36,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 10:21:36,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047706127] [2020-08-18 10:21:36,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 10:21:36,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:36,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 10:21:36,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 10:21:36,642 INFO L87 Difference]: Start difference. First operand 442 states and 504 transitions. Second operand 10 states. [2020-08-18 10:21:37,111 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:21:38,356 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:21:39,501 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:39,754 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:40,014 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:40,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:40,462 INFO L93 Difference]: Finished difference Result 970 states and 1183 transitions. [2020-08-18 10:21:40,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 10:21:40,463 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-08-18 10:21:40,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:40,468 INFO L225 Difference]: With dead ends: 970 [2020-08-18 10:21:40,468 INFO L226 Difference]: Without dead ends: 556 [2020-08-18 10:21:40,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-18 10:21:40,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2020-08-18 10:21:40,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 441. [2020-08-18 10:21:40,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-08-18 10:21:40,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 501 transitions. [2020-08-18 10:21:40,618 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 501 transitions. Word has length 93 [2020-08-18 10:21:40,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:40,621 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 501 transitions. [2020-08-18 10:21:40,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 10:21:40,621 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 501 transitions. [2020-08-18 10:21:40,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-18 10:21:40,623 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:40,624 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:21:40,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 10:21:40,624 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:40,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:40,624 INFO L82 PathProgramCache]: Analyzing trace with hash -412136482, now seen corresponding path program 1 times [2020-08-18 10:21:40,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:40,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714537901] [2020-08-18 10:21:40,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:40,901 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:21:40,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:40,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:40,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:40,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:40,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:40,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:21:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:40,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 10:21:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:40,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:21:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:40,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:40,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:41,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:41,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:41,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:21:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:41,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:41,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:41,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:41,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 10:21:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:41,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 10:21:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:41,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:21:41,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714537901] [2020-08-18 10:21:41,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:41,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 10:21:41,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318142287] [2020-08-18 10:21:41,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 10:21:41,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:41,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 10:21:41,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 10:21:41,088 INFO L87 Difference]: Start difference. First operand 441 states and 501 transitions. Second operand 10 states. [2020-08-18 10:21:42,060 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:42,303 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 10:21:42,530 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:21:42,754 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:21:44,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:44,106 INFO L93 Difference]: Finished difference Result 977 states and 1216 transitions. [2020-08-18 10:21:44,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 10:21:44,110 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 109 [2020-08-18 10:21:44,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:44,114 INFO L225 Difference]: With dead ends: 977 [2020-08-18 10:21:44,114 INFO L226 Difference]: Without dead ends: 564 [2020-08-18 10:21:44,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 10:21:44,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-08-18 10:21:44,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 451. [2020-08-18 10:21:44,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2020-08-18 10:21:44,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 511 transitions. [2020-08-18 10:21:44,213 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 511 transitions. Word has length 109 [2020-08-18 10:21:44,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:44,214 INFO L479 AbstractCegarLoop]: Abstraction has 451 states and 511 transitions. [2020-08-18 10:21:44,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 10:21:44,214 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 511 transitions. [2020-08-18 10:21:44,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-18 10:21:44,216 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:44,216 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:21:44,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 10:21:44,217 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:44,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:44,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1527025564, now seen corresponding path program 1 times [2020-08-18 10:21:44,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:44,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574611226] [2020-08-18 10:21:44,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,465 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:21:44,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:44,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:21:44,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 10:21:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:21:44,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:44,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:21:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:44,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 10:21:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 10:21:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:21:44,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574611226] [2020-08-18 10:21:44,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:44,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 10:21:44,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024387650] [2020-08-18 10:21:44,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:21:44,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:44,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:21:44,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:21:44,683 INFO L87 Difference]: Start difference. First operand 451 states and 511 transitions. Second operand 12 states. [2020-08-18 10:21:45,249 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:21:45,506 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:21:45,722 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:21:46,381 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:21:46,641 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:21:46,889 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:21:48,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:48,581 INFO L93 Difference]: Finished difference Result 997 states and 1238 transitions. [2020-08-18 10:21:48,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 10:21:48,582 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-08-18 10:21:48,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:48,586 INFO L225 Difference]: With dead ends: 997 [2020-08-18 10:21:48,586 INFO L226 Difference]: Without dead ends: 574 [2020-08-18 10:21:48,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 10:21:48,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-08-18 10:21:48,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 459. [2020-08-18 10:21:48,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-08-18 10:21:48,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 519 transitions. [2020-08-18 10:21:48,679 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 519 transitions. Word has length 109 [2020-08-18 10:21:48,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:48,680 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 519 transitions. [2020-08-18 10:21:48,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:21:48,680 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 519 transitions. [2020-08-18 10:21:48,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-18 10:21:48,682 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:48,682 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:21:48,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 10:21:48,683 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:48,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:48,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1998771717, now seen corresponding path program 1 times [2020-08-18 10:21:48,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:48,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102218941] [2020-08-18 10:21:48,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:48,952 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:21:48,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:48,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:48,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:48,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:48,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:49,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:21:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:49,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 10:21:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:49,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:21:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:49,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:49,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:49,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:49,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:49,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:49,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:21:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:49,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:49,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:49,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:49,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:49,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 10:21:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:49,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 10:21:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:49,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:21:49,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102218941] [2020-08-18 10:21:49,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:49,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:21:49,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389543935] [2020-08-18 10:21:49,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:21:49,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:49,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:21:49,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:21:49,136 INFO L87 Difference]: Start difference. First operand 459 states and 519 transitions. Second operand 8 states. [2020-08-18 10:21:49,473 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:21:50,053 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:21:52,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:52,767 INFO L93 Difference]: Finished difference Result 1365 states and 1751 transitions. [2020-08-18 10:21:52,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 10:21:52,768 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 109 [2020-08-18 10:21:52,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:52,774 INFO L225 Difference]: With dead ends: 1365 [2020-08-18 10:21:52,775 INFO L226 Difference]: Without dead ends: 934 [2020-08-18 10:21:52,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-18 10:21:52,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2020-08-18 10:21:52,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 789. [2020-08-18 10:21:52,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2020-08-18 10:21:52,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 921 transitions. [2020-08-18 10:21:52,905 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 921 transitions. Word has length 109 [2020-08-18 10:21:52,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:52,906 INFO L479 AbstractCegarLoop]: Abstraction has 789 states and 921 transitions. [2020-08-18 10:21:52,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:21:52,906 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 921 transitions. [2020-08-18 10:21:52,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-18 10:21:52,908 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:52,909 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:21:52,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 10:21:52,909 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:52,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:52,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1262789055, now seen corresponding path program 1 times [2020-08-18 10:21:52,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:52,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696651499] [2020-08-18 10:21:52,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:53,170 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:21:53,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:53,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:53,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:53,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:53,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:53,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:21:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:53,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:21:53,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:53,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:21:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:53,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 10:21:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:53,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:53,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:53,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:53,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:53,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:53,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:53,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:21:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:53,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:53,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:53,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:53,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 10:21:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:53,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 10:21:53,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:53,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 10:21:53,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696651499] [2020-08-18 10:21:53,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:21:53,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 10:21:53,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837035042] [2020-08-18 10:21:53,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 10:21:53,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:53,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 10:21:53,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-18 10:21:53,657 INFO L87 Difference]: Start difference. First operand 789 states and 921 transitions. Second operand 18 states. [2020-08-18 10:21:54,239 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:21:54,575 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:21:54,835 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:21:55,083 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:21:55,798 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:21:56,921 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:21:57,235 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:21:57,524 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:21:57,799 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:21:58,135 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:21:58,427 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:21:58,961 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-08-18 10:21:59,492 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-08-18 10:22:02,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:22:02,421 INFO L93 Difference]: Finished difference Result 1665 states and 2044 transitions. [2020-08-18 10:22:02,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-08-18 10:22:02,423 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 113 [2020-08-18 10:22:02,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:22:02,429 INFO L225 Difference]: With dead ends: 1665 [2020-08-18 10:22:02,429 INFO L226 Difference]: Without dead ends: 904 [2020-08-18 10:22:02,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=554, Invalid=2308, Unknown=0, NotChecked=0, Total=2862 [2020-08-18 10:22:02,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2020-08-18 10:22:02,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 768. [2020-08-18 10:22:02,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 768 states. [2020-08-18 10:22:02,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 886 transitions. [2020-08-18 10:22:02,610 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 886 transitions. Word has length 113 [2020-08-18 10:22:02,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:22:02,611 INFO L479 AbstractCegarLoop]: Abstraction has 768 states and 886 transitions. [2020-08-18 10:22:02,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 10:22:02,611 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 886 transitions. [2020-08-18 10:22:02,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-08-18 10:22:02,618 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:22:02,618 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:22:02,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 10:22:02,619 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:22:02,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:22:02,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1271659967, now seen corresponding path program 1 times [2020-08-18 10:22:02,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:22:02,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704109878] [2020-08-18 10:22:02,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:22:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,004 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:22:03,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:22:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:22:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:22:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:22:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:22:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:22:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:22:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 10:22:03,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:22:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:22:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:22:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:22:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:22:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 10:22:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:22:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-18 10:22:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 10:22:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 10:22:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:22:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:22:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:22:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 10:22:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-08-18 10:22:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-18 10:22:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:03,349 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-18 10:22:03,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704109878] [2020-08-18 10:22:03,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:22:03,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 10:22:03,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278556396] [2020-08-18 10:22:03,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 10:22:03,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:22:03,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 10:22:03,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-18 10:22:03,355 INFO L87 Difference]: Start difference. First operand 768 states and 886 transitions. Second operand 19 states. [2020-08-18 10:22:03,989 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:22:04,367 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:22:04,643 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:22:04,898 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:22:05,646 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:22:06,801 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:22:07,153 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:22:07,436 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:22:07,709 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:22:08,044 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:22:08,325 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:22:09,651 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:22:09,904 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:22:10,185 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:22:10,442 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:22:11,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:22:11,734 INFO L93 Difference]: Finished difference Result 1426 states and 1761 transitions. [2020-08-18 10:22:11,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-18 10:22:11,734 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 183 [2020-08-18 10:22:11,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:22:11,736 INFO L225 Difference]: With dead ends: 1426 [2020-08-18 10:22:11,736 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 10:22:11,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=591, Invalid=2715, Unknown=0, NotChecked=0, Total=3306 [2020-08-18 10:22:11,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 10:22:11,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 10:22:11,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 10:22:11,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 10:22:11,743 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 183 [2020-08-18 10:22:11,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:22:11,744 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 10:22:11,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 10:22:11,744 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 10:22:11,744 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 10:22:11,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 10:22:11,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 10:22:13,243 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 300 DAG size of output: 256 [2020-08-18 10:22:14,350 WARN L193 SmtUtils]: Spent 844.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 256 [2020-08-18 10:22:15,580 WARN L193 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 282 [2020-08-18 10:22:15,773 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 203 [2020-08-18 10:22:16,523 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 204 [2020-08-18 10:22:16,653 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 205