/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:21:07,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:21:07,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:21:07,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:21:07,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:21:07,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:21:07,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:21:07,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:21:07,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:21:07,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:21:07,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:21:07,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:21:07,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:21:07,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:21:07,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:21:07,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:21:07,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:21:07,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:21:07,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:21:07,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:21:07,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:21:07,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:21:07,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:21:07,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:21:07,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:21:07,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:21:07,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:21:07,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:21:07,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:21:07,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 03:21:08,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 03:21:08,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 03:21:08,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 03:21:08,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 03:21:08,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 03:21:08,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 03:21:08,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 03:21:08,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 03:21:08,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:21:08,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:21:08,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:21:08,006 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 03:21:08,028 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:21:08,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:21:08,029 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:21:08,030 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:21:08,030 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:21:08,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:21:08,030 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:21:08,031 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:21:08,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:21:08,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:21:08,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:21:08,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:21:08,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:21:08,032 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:21:08,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:21:08,032 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:21:08,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:21:08,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:21:08,033 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:21:08,033 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:21:08,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:21:08,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:21:08,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:21:08,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:21:08,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:21:08,034 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:21:08,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:21:08,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:21:08,035 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:21:08,035 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:21:08,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:21:08,330 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:21:08,333 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:21:08,335 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:21:08,338 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:21:08,339 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product61.cil.c [2020-08-19 03:21:08,418 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8086ceb5f/d65941dceed245dfb241b23ea0cab4dc/FLAGe7fe6197b [2020-08-19 03:21:08,965 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:21:08,966 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product61.cil.c [2020-08-19 03:21:08,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8086ceb5f/d65941dceed245dfb241b23ea0cab4dc/FLAGe7fe6197b [2020-08-19 03:21:09,261 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8086ceb5f/d65941dceed245dfb241b23ea0cab4dc [2020-08-19 03:21:09,272 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:21:09,274 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:21:09,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:21:09,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:21:09,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:21:09,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:21:09" (1/1) ... [2020-08-19 03:21:09,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c07bf98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:21:09, skipping insertion in model container [2020-08-19 03:21:09,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:21:09" (1/1) ... [2020-08-19 03:21:09,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:21:09,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:21:09,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:21:09,819 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:21:09,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:21:09,936 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:21:09,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:21:09 WrapperNode [2020-08-19 03:21:09,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:21:09,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:21:09,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:21:09,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:21:09,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:21:09" (1/1) ... [2020-08-19 03:21:09,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:21:09" (1/1) ... [2020-08-19 03:21:09,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:21:09" (1/1) ... [2020-08-19 03:21:09,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:21:09" (1/1) ... [2020-08-19 03:21:10,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:21:09" (1/1) ... [2020-08-19 03:21:10,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:21:09" (1/1) ... [2020-08-19 03:21:10,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:21:09" (1/1) ... [2020-08-19 03:21:10,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:21:10,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:21:10,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:21:10,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:21:10,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:21:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:21:10,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:21:10,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:21:10,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 03:21:10,096 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 03:21:10,096 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 03:21:10,096 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 03:21:10,097 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 03:21:10,097 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 03:21:10,098 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 03:21:10,099 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 03:21:10,099 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 03:21:10,099 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 03:21:10,099 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 03:21:10,099 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 03:21:10,100 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 03:21:10,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 03:21:10,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-19 03:21:10,101 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 03:21:10,101 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 03:21:10,101 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 03:21:10,102 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 03:21:10,102 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:21:10,102 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 03:21:10,102 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 03:21:10,104 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 03:21:10,104 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 03:21:10,105 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 03:21:10,105 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 03:21:10,105 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 03:21:10,105 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 03:21:10,105 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 03:21:10,105 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 03:21:10,106 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 03:21:10,106 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 03:21:10,106 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 03:21:10,106 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 03:21:10,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 03:21:10,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 03:21:10,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 03:21:10,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 03:21:10,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 03:21:10,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 03:21:10,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:21:10,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 03:21:10,107 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 03:21:10,107 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 03:21:10,107 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 03:21:10,107 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 03:21:10,107 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 03:21:10,107 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 03:21:10,108 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 03:21:10,108 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 03:21:10,108 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 03:21:10,108 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 03:21:10,108 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 03:21:10,108 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 03:21:10,108 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 03:21:10,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 03:21:10,109 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 03:21:10,109 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 03:21:10,109 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-19 03:21:10,109 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 03:21:10,109 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 03:21:10,110 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 03:21:10,110 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 03:21:10,110 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 03:21:10,110 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 03:21:10,110 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 03:21:10,110 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:21:10,110 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 03:21:10,110 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 03:21:10,111 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 03:21:10,111 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 03:21:10,111 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 03:21:10,111 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 03:21:10,112 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 03:21:10,112 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 03:21:10,112 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 03:21:10,112 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 03:21:10,113 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 03:21:10,113 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 03:21:10,113 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 03:21:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 03:21:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 03:21:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 03:21:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 03:21:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 03:21:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 03:21:10,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 03:21:10,115 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 03:21:10,115 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 03:21:10,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 03:21:10,115 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 03:21:10,115 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 03:21:10,115 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 03:21:10,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:21:10,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 03:21:10,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:21:11,333 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:21:11,334 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 03:21:11,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:21:11 BoogieIcfgContainer [2020-08-19 03:21:11,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:21:11,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:21:11,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:21:11,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:21:11,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:21:09" (1/3) ... [2020-08-19 03:21:11,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@699dc3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:21:11, skipping insertion in model container [2020-08-19 03:21:11,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:21:09" (2/3) ... [2020-08-19 03:21:11,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@699dc3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:21:11, skipping insertion in model container [2020-08-19 03:21:11,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:21:11" (3/3) ... [2020-08-19 03:21:11,356 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product61.cil.c [2020-08-19 03:21:11,366 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:21:11,376 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:21:11,391 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:21:11,423 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:21:11,423 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:21:11,424 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:21:11,424 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:21:11,425 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:21:11,425 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:21:11,425 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:21:11,426 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:21:11,447 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states. [2020-08-19 03:21:11,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 03:21:11,457 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:21:11,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:21:11,459 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:21:11,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:21:11,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1301923028, now seen corresponding path program 1 times [2020-08-19 03:21:11,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:21:11,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925058536] [2020-08-19 03:21:11,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:21:11,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:12,079 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:21:12,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:21:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:12,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:21:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:12,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:21:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:12,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:21:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:12,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:21:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:12,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 03:21:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:12,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 03:21:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:12,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:21:12,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925058536] [2020-08-19 03:21:12,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:21:12,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:21:12,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198620308] [2020-08-19 03:21:12,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:21:12,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:21:12,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:21:12,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:21:12,185 INFO L87 Difference]: Start difference. First operand 193 states. Second operand 3 states. [2020-08-19 03:21:13,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:21:13,518 INFO L93 Difference]: Finished difference Result 345 states and 451 transitions. [2020-08-19 03:21:13,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:21:13,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 03:21:13,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:21:13,537 INFO L225 Difference]: With dead ends: 345 [2020-08-19 03:21:13,538 INFO L226 Difference]: Without dead ends: 186 [2020-08-19 03:21:13,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:21:13,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-19 03:21:13,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 150. [2020-08-19 03:21:13,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-19 03:21:13,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 179 transitions. [2020-08-19 03:21:13,709 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 179 transitions. Word has length 46 [2020-08-19 03:21:13,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:21:13,711 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 179 transitions. [2020-08-19 03:21:13,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:21:13,711 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 179 transitions. [2020-08-19 03:21:13,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 03:21:13,721 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:21:13,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:21:13,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:21:13,722 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:21:13,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:21:13,723 INFO L82 PathProgramCache]: Analyzing trace with hash -216566915, now seen corresponding path program 1 times [2020-08-19 03:21:13,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:21:13,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538139742] [2020-08-19 03:21:13,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:21:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:14,143 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:21:14,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:21:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:14,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:21:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:14,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:21:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:14,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:21:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:14,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:21:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:14,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 03:21:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:14,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:21:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:14,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:21:14,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538139742] [2020-08-19 03:21:14,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:21:14,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:21:14,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728417576] [2020-08-19 03:21:14,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:21:14,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:21:14,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:21:14,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:21:14,189 INFO L87 Difference]: Start difference. First operand 150 states and 179 transitions. Second operand 4 states. [2020-08-19 03:21:14,609 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:21:15,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:21:15,636 INFO L93 Difference]: Finished difference Result 278 states and 342 transitions. [2020-08-19 03:21:15,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:21:15,637 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 03:21:15,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:21:15,640 INFO L225 Difference]: With dead ends: 278 [2020-08-19 03:21:15,641 INFO L226 Difference]: Without dead ends: 170 [2020-08-19 03:21:15,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:21:15,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-19 03:21:15,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 141. [2020-08-19 03:21:15,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-08-19 03:21:15,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 167 transitions. [2020-08-19 03:21:15,706 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 167 transitions. Word has length 47 [2020-08-19 03:21:15,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:21:15,707 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 167 transitions. [2020-08-19 03:21:15,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:21:15,707 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 167 transitions. [2020-08-19 03:21:15,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 03:21:15,709 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:21:15,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:21:15,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:21:15,709 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:21:15,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:21:15,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1163721234, now seen corresponding path program 1 times [2020-08-19 03:21:15,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:21:15,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688809008] [2020-08-19 03:21:15,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:21:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:16,018 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:21:16,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:21:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:16,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:21:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:16,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:21:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:16,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:21:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:16,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:21:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:16,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:21:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:16,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 03:21:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:16,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:21:16,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688809008] [2020-08-19 03:21:16,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:21:16,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 03:21:16,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932834611] [2020-08-19 03:21:16,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:21:16,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:21:16,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:21:16,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:21:16,108 INFO L87 Difference]: Start difference. First operand 141 states and 167 transitions. Second operand 8 states. [2020-08-19 03:21:16,568 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:21:16,897 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:17,135 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:17,361 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:18,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:21:18,750 INFO L93 Difference]: Finished difference Result 287 states and 356 transitions. [2020-08-19 03:21:18,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 03:21:18,758 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 03:21:18,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:21:18,762 INFO L225 Difference]: With dead ends: 287 [2020-08-19 03:21:18,762 INFO L226 Difference]: Without dead ends: 170 [2020-08-19 03:21:18,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:21:18,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-19 03:21:18,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 141. [2020-08-19 03:21:18,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-08-19 03:21:18,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 166 transitions. [2020-08-19 03:21:18,810 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 166 transitions. Word has length 51 [2020-08-19 03:21:18,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:21:18,810 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 166 transitions. [2020-08-19 03:21:18,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:21:18,811 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 166 transitions. [2020-08-19 03:21:18,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-19 03:21:18,812 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:21:18,813 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] [2020-08-19 03:21:18,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:21:18,813 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:21:18,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:21:18,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1315506319, now seen corresponding path program 1 times [2020-08-19 03:21:18,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:21:18,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880815787] [2020-08-19 03:21:18,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:21:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:19,074 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:21:19,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:21:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:19,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:21:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:19,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:21:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:19,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:21:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:19,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:21:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:19,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 03:21:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:19,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:19,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:19,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:19,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 03:21:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:19,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 03:21:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:19,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:21:19,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880815787] [2020-08-19 03:21:19,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:21:19,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 03:21:19,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916152601] [2020-08-19 03:21:19,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 03:21:19,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:21:19,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 03:21:19,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:21:19,194 INFO L87 Difference]: Start difference. First operand 141 states and 166 transitions. Second operand 6 states. [2020-08-19 03:21:19,524 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:21:20,639 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:21:21,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:21:21,373 INFO L93 Difference]: Finished difference Result 390 states and 484 transitions. [2020-08-19 03:21:21,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 03:21:21,380 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-08-19 03:21:21,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:21:21,387 INFO L225 Difference]: With dead ends: 390 [2020-08-19 03:21:21,388 INFO L226 Difference]: Without dead ends: 273 [2020-08-19 03:21:21,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-19 03:21:21,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-08-19 03:21:21,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 232. [2020-08-19 03:21:21,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-08-19 03:21:21,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 264 transitions. [2020-08-19 03:21:21,452 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 264 transitions. Word has length 69 [2020-08-19 03:21:21,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:21:21,452 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 264 transitions. [2020-08-19 03:21:21,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 03:21:21,452 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 264 transitions. [2020-08-19 03:21:21,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 03:21:21,454 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:21:21,454 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] [2020-08-19 03:21:21,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 03:21:21,454 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:21:21,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:21:21,455 INFO L82 PathProgramCache]: Analyzing trace with hash -921409892, now seen corresponding path program 1 times [2020-08-19 03:21:21,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:21:21,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215688971] [2020-08-19 03:21:21,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:21:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:21,763 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:21:21,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:21:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:21,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:21:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:21,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:21:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:21,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:21:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:21,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:21:21,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:21,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 03:21:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:21,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:21,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:21,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:21,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:21,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:21,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:21,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:21:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:21,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 03:21:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:21,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 03:21:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:21,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:21:21,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215688971] [2020-08-19 03:21:21,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:21:21,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 03:21:21,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585244265] [2020-08-19 03:21:21,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:21:21,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:21:21,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:21:21,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:21:21,895 INFO L87 Difference]: Start difference. First operand 232 states and 264 transitions. Second operand 8 states. [2020-08-19 03:21:22,475 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:21:23,422 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:23,754 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:21:24,308 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:24,528 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:24,792 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:21:26,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:21:26,018 INFO L93 Difference]: Finished difference Result 691 states and 842 transitions. [2020-08-19 03:21:26,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 03:21:26,019 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-08-19 03:21:26,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:21:26,028 INFO L225 Difference]: With dead ends: 691 [2020-08-19 03:21:26,029 INFO L226 Difference]: Without dead ends: 483 [2020-08-19 03:21:26,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-19 03:21:26,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-08-19 03:21:26,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 419. [2020-08-19 03:21:26,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-08-19 03:21:26,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 478 transitions. [2020-08-19 03:21:26,107 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 478 transitions. Word has length 83 [2020-08-19 03:21:26,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:21:26,108 INFO L479 AbstractCegarLoop]: Abstraction has 419 states and 478 transitions. [2020-08-19 03:21:26,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:21:26,109 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 478 transitions. [2020-08-19 03:21:26,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-19 03:21:26,110 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:21:26,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:21:26,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 03:21:26,111 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:21:26,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:21:26,111 INFO L82 PathProgramCache]: Analyzing trace with hash 592685792, now seen corresponding path program 1 times [2020-08-19 03:21:26,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:21:26,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352535748] [2020-08-19 03:21:26,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:21:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:26,420 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:21:26,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:21:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:26,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:21:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:26,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:21:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:26,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:21:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:26,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:21:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:26,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:21:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:26,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:21:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:26,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:26,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:26,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:26,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:26,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:21:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:26,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 03:21:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:26,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 03:21:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:26,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:21:26,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352535748] [2020-08-19 03:21:26,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:21:26,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 03:21:26,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296268757] [2020-08-19 03:21:26,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:21:26,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:21:26,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:21:26,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:21:26,568 INFO L87 Difference]: Start difference. First operand 419 states and 478 transitions. Second operand 9 states. [2020-08-19 03:21:27,007 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:21:28,124 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:21:28,414 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:21:29,517 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:29,785 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:30,010 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:30,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:21:30,355 INFO L93 Difference]: Finished difference Result 522 states and 646 transitions. [2020-08-19 03:21:30,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 03:21:30,356 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-08-19 03:21:30,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:21:30,360 INFO L225 Difference]: With dead ends: 522 [2020-08-19 03:21:30,361 INFO L226 Difference]: Without dead ends: 519 [2020-08-19 03:21:30,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 03:21:30,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2020-08-19 03:21:30,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 419. [2020-08-19 03:21:30,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-08-19 03:21:30,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 477 transitions. [2020-08-19 03:21:30,480 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 477 transitions. Word has length 87 [2020-08-19 03:21:30,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:21:30,481 INFO L479 AbstractCegarLoop]: Abstraction has 419 states and 477 transitions. [2020-08-19 03:21:30,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:21:30,481 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 477 transitions. [2020-08-19 03:21:30,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-19 03:21:30,483 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:21:30,483 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] [2020-08-19 03:21:30,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 03:21:30,483 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:21:30,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:21:30,484 INFO L82 PathProgramCache]: Analyzing trace with hash -88143431, now seen corresponding path program 1 times [2020-08-19 03:21:30,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:21:30,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084772548] [2020-08-19 03:21:30,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:21:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:30,766 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:21:30,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:21:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:30,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:21:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:30,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:21:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:30,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:21:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:30,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:21:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:30,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:21:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:30,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:21:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:30,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:30,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:30,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:30,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:30,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:30,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:21:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:30,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:30,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:30,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:21:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:30,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 03:21:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:30,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-19 03:21:30,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:30,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 03:21:30,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084772548] [2020-08-19 03:21:30,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:21:30,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 03:21:30,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937348591] [2020-08-19 03:21:30,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:21:30,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:21:30,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:21:30,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:21:30,974 INFO L87 Difference]: Start difference. First operand 419 states and 477 transitions. Second operand 9 states. [2020-08-19 03:21:31,950 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:21:32,197 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:21:32,444 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:21:32,719 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:21:33,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:21:33,962 INFO L93 Difference]: Finished difference Result 922 states and 1136 transitions. [2020-08-19 03:21:33,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 03:21:33,963 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-08-19 03:21:33,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:21:33,968 INFO L225 Difference]: With dead ends: 922 [2020-08-19 03:21:33,968 INFO L226 Difference]: Without dead ends: 527 [2020-08-19 03:21:33,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 03:21:33,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2020-08-19 03:21:34,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 429. [2020-08-19 03:21:34,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-08-19 03:21:34,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 487 transitions. [2020-08-19 03:21:34,064 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 487 transitions. Word has length 103 [2020-08-19 03:21:34,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:21:34,064 INFO L479 AbstractCegarLoop]: Abstraction has 429 states and 487 transitions. [2020-08-19 03:21:34,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:21:34,065 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 487 transitions. [2020-08-19 03:21:34,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-19 03:21:34,067 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:21:34,067 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] [2020-08-19 03:21:34,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 03:21:34,068 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:21:34,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:21:34,068 INFO L82 PathProgramCache]: Analyzing trace with hash -441231813, now seen corresponding path program 1 times [2020-08-19 03:21:34,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:21:34,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810825264] [2020-08-19 03:21:34,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:21:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:34,355 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:21:34,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:21:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:34,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:21:34,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:34,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:21:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:34,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:21:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:34,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:21:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:34,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:21:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:34,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:21:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:34,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:34,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:34,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:34,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:34,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:21:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:34,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:34,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:34,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:21:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:34,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 03:21:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:34,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-19 03:21:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:34,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 03:21:34,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810825264] [2020-08-19 03:21:34,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:21:34,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 03:21:34,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890710061] [2020-08-19 03:21:34,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 03:21:34,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:21:34,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 03:21:34,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 03:21:34,599 INFO L87 Difference]: Start difference. First operand 429 states and 487 transitions. Second operand 11 states. [2020-08-19 03:21:35,696 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:35,942 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:21:36,181 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:21:36,805 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:21:37,070 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:21:37,320 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:21:38,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:21:38,752 INFO L93 Difference]: Finished difference Result 942 states and 1158 transitions. [2020-08-19 03:21:38,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 03:21:38,753 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 103 [2020-08-19 03:21:38,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:21:38,756 INFO L225 Difference]: With dead ends: 942 [2020-08-19 03:21:38,757 INFO L226 Difference]: Without dead ends: 537 [2020-08-19 03:21:38,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 03:21:38,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2020-08-19 03:21:38,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 437. [2020-08-19 03:21:38,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-08-19 03:21:38,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 495 transitions. [2020-08-19 03:21:38,837 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 495 transitions. Word has length 103 [2020-08-19 03:21:38,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:21:38,838 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 495 transitions. [2020-08-19 03:21:38,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 03:21:38,838 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 495 transitions. [2020-08-19 03:21:38,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-19 03:21:38,840 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:21:38,840 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] [2020-08-19 03:21:38,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 03:21:38,840 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:21:38,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:21:38,841 INFO L82 PathProgramCache]: Analyzing trace with hash 691958780, now seen corresponding path program 1 times [2020-08-19 03:21:38,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:21:38,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656359943] [2020-08-19 03:21:38,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:21:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:39,107 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:21:39,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:21:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:39,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:21:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:39,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:21:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:39,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:21:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:39,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:21:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:39,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:21:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:39,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:21:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:39,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:39,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:39,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:39,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:39,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:39,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:21:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:39,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:39,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:39,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:39,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:21:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:39,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 03:21:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:39,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-19 03:21:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:39,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 03:21:39,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656359943] [2020-08-19 03:21:39,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:21:39,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 03:21:39,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828459813] [2020-08-19 03:21:39,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 03:21:39,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:21:39,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 03:21:39,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 03:21:39,336 INFO L87 Difference]: Start difference. First operand 437 states and 495 transitions. Second operand 7 states. [2020-08-19 03:21:39,996 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:21:40,541 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:21:42,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:21:42,867 INFO L93 Difference]: Finished difference Result 1265 states and 1606 transitions. [2020-08-19 03:21:42,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 03:21:42,868 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2020-08-19 03:21:42,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:21:42,877 INFO L225 Difference]: With dead ends: 1265 [2020-08-19 03:21:42,878 INFO L226 Difference]: Without dead ends: 852 [2020-08-19 03:21:42,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 03:21:42,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2020-08-19 03:21:43,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 753. [2020-08-19 03:21:43,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2020-08-19 03:21:43,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 889 transitions. [2020-08-19 03:21:43,050 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 889 transitions. Word has length 103 [2020-08-19 03:21:43,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:21:43,052 INFO L479 AbstractCegarLoop]: Abstraction has 753 states and 889 transitions. [2020-08-19 03:21:43,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 03:21:43,053 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 889 transitions. [2020-08-19 03:21:43,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-19 03:21:43,056 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:21:43,056 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] [2020-08-19 03:21:43,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 03:21:43,057 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:21:43,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:21:43,057 INFO L82 PathProgramCache]: Analyzing trace with hash -867723262, now seen corresponding path program 1 times [2020-08-19 03:21:43,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:21:43,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221733361] [2020-08-19 03:21:43,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:21:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:43,395 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:21:43,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:21:43,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:43,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:21:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:43,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:21:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:43,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:21:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:43,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:21:43,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:43,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:21:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:43,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 03:21:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:43,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 03:21:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:43,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:43,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:43,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:43,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:43,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:43,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:43,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:21:43,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:43,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:43,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:43,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:21:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:43,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 03:21:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:43,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 03:21:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:43,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 03:21:43,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221733361] [2020-08-19 03:21:43,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:21:43,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-19 03:21:43,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034894167] [2020-08-19 03:21:43,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-19 03:21:43,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:21:43,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-19 03:21:43,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-19 03:21:43,945 INFO L87 Difference]: Start difference. First operand 753 states and 889 transitions. Second operand 17 states. [2020-08-19 03:21:44,591 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:21:44,923 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:21:45,188 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:21:45,437 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:21:46,048 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:21:47,137 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:21:47,444 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:21:47,739 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:21:48,037 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:21:48,388 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:21:48,682 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:21:49,236 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-19 03:21:49,823 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-19 03:21:52,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:21:52,207 INFO L93 Difference]: Finished difference Result 1548 states and 1897 transitions. [2020-08-19 03:21:52,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-19 03:21:52,207 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 107 [2020-08-19 03:21:52,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:21:52,213 INFO L225 Difference]: With dead ends: 1548 [2020-08-19 03:21:52,213 INFO L226 Difference]: Without dead ends: 819 [2020-08-19 03:21:52,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=304, Invalid=1256, Unknown=0, NotChecked=0, Total=1560 [2020-08-19 03:21:52,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2020-08-19 03:21:52,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 723. [2020-08-19 03:21:52,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-08-19 03:21:52,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 840 transitions. [2020-08-19 03:21:52,360 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 840 transitions. Word has length 107 [2020-08-19 03:21:52,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:21:52,361 INFO L479 AbstractCegarLoop]: Abstraction has 723 states and 840 transitions. [2020-08-19 03:21:52,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-19 03:21:52,361 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 840 transitions. [2020-08-19 03:21:52,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-08-19 03:21:52,364 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:21:52,365 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:21:52,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 03:21:52,365 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:21:52,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:21:52,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1713415852, now seen corresponding path program 1 times [2020-08-19 03:21:52,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:21:52,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104782956] [2020-08-19 03:21:52,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:21:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:52,771 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:21:52,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:21:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:52,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:21:52,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:52,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:21:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:52,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:21:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:52,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:21:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:52,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:21:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:52,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 03:21:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:52,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:52,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:52,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:52,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:52,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:52,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:52,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:52,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:52,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:21:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:52,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:52,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:52,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:52,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:21:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:52,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 03:21:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:52,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:52,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 03:21:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:52,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-19 03:21:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:52,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-19 03:21:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:52,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:53,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:53,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 03:21:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:53,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:53,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:53,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 03:21:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:53,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:53,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-19 03:21:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:53,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-08-19 03:21:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:53,125 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-19 03:21:53,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104782956] [2020-08-19 03:21:53,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:21:53,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-19 03:21:53,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661108269] [2020-08-19 03:21:53,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-19 03:21:53,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:21:53,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-19 03:21:53,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-19 03:21:53,128 INFO L87 Difference]: Start difference. First operand 723 states and 840 transitions. Second operand 18 states. [2020-08-19 03:21:53,757 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:21:54,094 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:21:54,349 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:21:54,588 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:21:55,193 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:21:56,194 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:56,537 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:56,828 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:57,105 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:57,446 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:57,740 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:58,926 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:59,192 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:59,459 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:59,717 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:22:00,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:22:00,793 INFO L93 Difference]: Finished difference Result 1309 states and 1611 transitions. [2020-08-19 03:22:00,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 03:22:00,799 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 176 [2020-08-19 03:22:00,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:22:00,801 INFO L225 Difference]: With dead ends: 1309 [2020-08-19 03:22:00,801 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 03:22:00,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=347, Invalid=1633, Unknown=0, NotChecked=0, Total=1980 [2020-08-19 03:22:00,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 03:22:00,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 03:22:00,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 03:22:00,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 03:22:00,807 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 176 [2020-08-19 03:22:00,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:22:00,807 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 03:22:00,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-19 03:22:00,807 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 03:22:00,807 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 03:22:00,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 03:22:00,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 03:22:01,870 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 198 [2020-08-19 03:22:02,247 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 200 [2020-08-19 03:22:02,369 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 198 [2020-08-19 03:22:02,508 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 198 [2020-08-19 03:22:04,010 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 294 DAG size of output: 240 [2020-08-19 03:22:06,041 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 240