/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 13:13:42,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:13:43,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:13:43,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:13:43,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:13:43,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:13:43,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:13:43,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:13:43,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:13:43,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:13:43,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:13:43,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:13:43,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:13:43,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:13:43,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:13:43,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:13:43,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:13:43,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:13:43,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:13:43,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:13:43,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:13:43,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:13:43,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:13:43,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:13:43,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:13:43,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:13:43,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:13:43,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:13:43,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:13:43,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 13:13:43,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 13:13:43,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 13:13:43,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 13:13:43,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 13:13:43,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 13:13:43,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 13:13:43,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 13:13:43,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 13:13:43,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:13:43,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:13:43,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:13:43,069 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 [2020-08-21 13:13:43,098 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:13:43,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:13:43,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:13:43,100 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:13:43,100 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:13:43,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:13:43,101 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:13:43,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:13:43,101 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:13:43,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:13:43,102 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:13:43,102 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:13:43,102 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:13:43,102 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:13:43,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:13:43,102 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:13:43,103 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:13:43,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:13:43,103 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:13:43,103 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:13:43,104 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:13:43,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:13:43,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:13:43,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:13:43,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:13:43,105 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:13:43,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:13:43,105 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:13:43,105 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:13:43,105 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-21 13:13:43,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:13:43,411 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:13:43,415 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:13:43,417 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:13:43,417 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:13:43,418 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product46.cil.c [2020-08-21 13:13:43,485 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0fdeabd1/91480857665043949ec8e9f105f362d5/FLAG5f4463980 [2020-08-21 13:13:43,990 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:13:43,991 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product46.cil.c [2020-08-21 13:13:44,009 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0fdeabd1/91480857665043949ec8e9f105f362d5/FLAG5f4463980 [2020-08-21 13:13:44,336 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0fdeabd1/91480857665043949ec8e9f105f362d5 [2020-08-21 13:13:44,345 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:13:44,347 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:13:44,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:13:44,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:13:44,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:13:44,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:13:44" (1/1) ... [2020-08-21 13:13:44,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30847a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:13:44, skipping insertion in model container [2020-08-21 13:13:44,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:13:44" (1/1) ... [2020-08-21 13:13:44,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:13:44,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:13:44,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:13:44,895 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:13:45,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:13:45,067 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:13:45,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:13:45 WrapperNode [2020-08-21 13:13:45,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:13:45,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:13:45,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:13:45,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:13:45,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:13:45" (1/1) ... [2020-08-21 13:13:45,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:13:45" (1/1) ... [2020-08-21 13:13:45,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:13:45" (1/1) ... [2020-08-21 13:13:45,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:13:45" (1/1) ... [2020-08-21 13:13:45,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:13:45" (1/1) ... [2020-08-21 13:13:45,153 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:13:45" (1/1) ... [2020-08-21 13:13:45,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:13:45" (1/1) ... [2020-08-21 13:13:45,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:13:45,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:13:45,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:13:45,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:13:45,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:13:45" (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 [2020-08-21 13:13:45,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:13:45,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:13:45,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 13:13:45,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 13:13:45,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 13:13:45,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 13:13:45,273 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 13:13:45,273 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 13:13:45,273 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 13:13:45,274 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 13:13:45,274 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:13:45,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 13:13:45,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 13:13:45,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 13:13:45,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 13:13:45,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 13:13:45,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 13:13:45,276 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 13:13:45,276 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 13:13:45,277 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 13:13:45,277 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 13:13:45,277 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 13:13:45,277 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 13:13:45,277 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 13:13:45,277 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 13:13:45,278 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 13:13:45,278 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 13:13:45,278 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 13:13:45,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 13:13:45,279 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 13:13:45,279 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 13:13:45,279 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 13:13:45,279 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 13:13:45,279 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 13:13:45,280 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 13:13:45,280 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 13:13:45,280 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 13:13:45,280 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 13:13:45,280 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 13:13:45,281 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 13:13:45,281 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 13:13:45,281 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 13:13:45,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:13:45,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 13:13:45,281 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 13:13:45,281 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 13:13:45,283 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 13:13:45,284 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 13:13:45,285 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 13:13:45,285 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 13:13:45,285 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 13:13:45,285 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 13:13:45,285 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 13:13:45,285 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 13:13:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 13:13:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 13:13:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 13:13:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 13:13:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 13:13:45,287 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 13:13:45,287 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 13:13:45,287 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 13:13:45,287 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 13:13:45,287 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:13:45,288 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 13:13:45,288 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 13:13:45,288 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 13:13:45,288 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 13:13:45,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 13:13:45,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 13:13:45,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:13:45,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 13:13:45,289 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 13:13:45,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:13:45,290 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 13:13:45,290 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 13:13:45,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:13:45,291 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 13:13:45,291 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 13:13:45,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:13:45,292 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 13:13:45,292 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 13:13:45,292 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 13:13:45,292 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 13:13:45,293 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 13:13:45,293 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 13:13:45,293 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 13:13:45,294 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 13:13:45,294 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 13:13:45,294 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 13:13:45,294 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 13:13:45,294 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 13:13:45,303 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 13:13:45,303 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 13:13:45,304 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 13:13:45,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:13:45,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 13:13:45,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:13:46,348 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:13:46,349 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 13:13:46,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:13:46 BoogieIcfgContainer [2020-08-21 13:13:46,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:13:46,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:13:46,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:13:46,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:13:46,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:13:44" (1/3) ... [2020-08-21 13:13:46,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a85601 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:13:46, skipping insertion in model container [2020-08-21 13:13:46,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:13:45" (2/3) ... [2020-08-21 13:13:46,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a85601 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:13:46, skipping insertion in model container [2020-08-21 13:13:46,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:13:46" (3/3) ... [2020-08-21 13:13:46,363 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product46.cil.c [2020-08-21 13:13:46,373 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:13:46,382 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:13:46,396 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:13:46,422 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:13:46,422 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:13:46,422 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:13:46,422 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:13:46,423 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:13:46,423 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:13:46,423 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:13:46,423 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:13:46,446 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2020-08-21 13:13:46,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 13:13:46,457 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:13:46,458 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:13:46,459 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:13:46,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:13:46,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1347369271, now seen corresponding path program 1 times [2020-08-21 13:13:46,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:13:46,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388576417] [2020-08-21 13:13:46,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:13:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:47,132 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:13:47,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:13:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:47,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:13:47,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:47,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:13:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:47,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:13:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:47,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:13:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:47,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:13:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:47,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:13:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:47,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:13:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:47,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:13:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:47,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 13:13:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:47,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 13:13:47,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388576417] [2020-08-21 13:13:47,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:13:47,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:13:47,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144965605] [2020-08-21 13:13:47,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:13:47,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:13:47,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:13:47,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:13:47,315 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 4 states. [2020-08-21 13:13:48,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:13:48,349 INFO L93 Difference]: Finished difference Result 325 states and 415 transitions. [2020-08-21 13:13:48,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 13:13:48,353 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 13:13:48,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:13:48,377 INFO L225 Difference]: With dead ends: 325 [2020-08-21 13:13:48,378 INFO L226 Difference]: Without dead ends: 179 [2020-08-21 13:13:48,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:13:48,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-21 13:13:48,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 147. [2020-08-21 13:13:48,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-08-21 13:13:48,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 172 transitions. [2020-08-21 13:13:48,527 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 172 transitions. Word has length 59 [2020-08-21 13:13:48,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:13:48,528 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 172 transitions. [2020-08-21 13:13:48,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:13:48,528 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 172 transitions. [2020-08-21 13:13:48,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 13:13:48,532 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:13:48,532 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:13:48,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:13:48,533 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:13:48,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:13:48,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1814034675, now seen corresponding path program 1 times [2020-08-21 13:13:48,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:13:48,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252779420] [2020-08-21 13:13:48,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:13:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:48,925 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:13:48,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:13:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:48,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:13:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:48,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:13:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:48,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:13:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:48,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:13:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:48,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:13:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:48,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 13:13:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:48,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:13:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:48,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 13:13:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:48,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 13:13:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:49,007 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 13:13:49,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252779420] [2020-08-21 13:13:49,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:13:49,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 13:13:49,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514959172] [2020-08-21 13:13:49,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 13:13:49,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:13:49,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 13:13:49,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 13:13:49,011 INFO L87 Difference]: Start difference. First operand 147 states and 172 transitions. Second operand 5 states. [2020-08-21 13:13:49,471 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:13:50,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:13:50,411 INFO L93 Difference]: Finished difference Result 266 states and 323 transitions. [2020-08-21 13:13:50,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 13:13:50,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-21 13:13:50,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:13:50,415 INFO L225 Difference]: With dead ends: 266 [2020-08-21 13:13:50,415 INFO L226 Difference]: Without dead ends: 169 [2020-08-21 13:13:50,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 13:13:50,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-21 13:13:50,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 138. [2020-08-21 13:13:50,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-21 13:13:50,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 160 transitions. [2020-08-21 13:13:50,456 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 160 transitions. Word has length 60 [2020-08-21 13:13:50,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:13:50,457 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 160 transitions. [2020-08-21 13:13:50,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 13:13:50,457 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 160 transitions. [2020-08-21 13:13:50,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 13:13:50,460 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:13:50,460 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:13:50,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:13:50,460 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:13:50,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:13:50,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1518926539, now seen corresponding path program 1 times [2020-08-21 13:13:50,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:13:50,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72989662] [2020-08-21 13:13:50,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:13:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:50,821 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:13:50,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:13:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:50,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:13:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:50,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:13:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:50,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:13:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:50,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:13:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:50,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:13:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:50,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:13:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:50,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:13:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:50,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 13:13:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:50,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 13:13:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:50,924 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 13:13:50,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72989662] [2020-08-21 13:13:50,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:13:50,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 13:13:50,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270713108] [2020-08-21 13:13:50,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 13:13:50,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:13:50,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 13:13:50,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:13:50,927 INFO L87 Difference]: Start difference. First operand 138 states and 160 transitions. Second operand 9 states. [2020-08-21 13:13:51,272 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:13:51,586 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:13:51,874 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:13:52,128 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:13:53,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:13:53,285 INFO L93 Difference]: Finished difference Result 279 states and 342 transitions. [2020-08-21 13:13:53,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 13:13:53,286 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-21 13:13:53,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:13:53,289 INFO L225 Difference]: With dead ends: 279 [2020-08-21 13:13:53,289 INFO L226 Difference]: Without dead ends: 169 [2020-08-21 13:13:53,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 13:13:53,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-21 13:13:53,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 138. [2020-08-21 13:13:53,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-21 13:13:53,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 159 transitions. [2020-08-21 13:13:53,352 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 159 transitions. Word has length 65 [2020-08-21 13:13:53,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:13:53,355 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 159 transitions. [2020-08-21 13:13:53,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 13:13:53,355 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 159 transitions. [2020-08-21 13:13:53,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-21 13:13:53,364 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:13:53,365 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:13:53,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 13:13:53,365 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:13:53,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:13:53,366 INFO L82 PathProgramCache]: Analyzing trace with hash 793046871, now seen corresponding path program 1 times [2020-08-21 13:13:53,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:13:53,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208397494] [2020-08-21 13:13:53,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:13:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:53,681 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:13:53,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:13:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:53,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:13:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:53,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:13:53,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:53,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:13:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:53,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:13:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:53,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:13:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:53,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:13:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:53,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:13:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:53,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 13:13:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:53,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:13:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:53,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:13:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:53,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-21 13:13:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:53,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 13:13:53,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:53,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 13:13:53,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208397494] [2020-08-21 13:13:53,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:13:53,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 13:13:53,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914843628] [2020-08-21 13:13:53,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 13:13:53,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:13:53,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 13:13:53,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 13:13:53,783 INFO L87 Difference]: Start difference. First operand 138 states and 159 transitions. Second operand 7 states. [2020-08-21 13:13:54,161 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:13:55,737 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:13:56,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:13:56,263 INFO L93 Difference]: Finished difference Result 391 states and 483 transitions. [2020-08-21 13:13:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 13:13:56,264 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-08-21 13:13:56,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:13:56,268 INFO L225 Difference]: With dead ends: 391 [2020-08-21 13:13:56,268 INFO L226 Difference]: Without dead ends: 281 [2020-08-21 13:13:56,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-21 13:13:56,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-08-21 13:13:56,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 235. [2020-08-21 13:13:56,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-08-21 13:13:56,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 267 transitions. [2020-08-21 13:13:56,317 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 267 transitions. Word has length 78 [2020-08-21 13:13:56,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:13:56,317 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 267 transitions. [2020-08-21 13:13:56,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 13:13:56,318 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 267 transitions. [2020-08-21 13:13:56,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 13:13:56,319 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:13:56,319 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] [2020-08-21 13:13:56,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 13:13:56,320 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:13:56,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:13:56,320 INFO L82 PathProgramCache]: Analyzing trace with hash -856462191, now seen corresponding path program 1 times [2020-08-21 13:13:56,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:13:56,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861672146] [2020-08-21 13:13:56,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:13:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:56,620 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:13:56,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:13:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:56,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:13:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:56,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:13:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:56,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:13:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:56,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:13:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:56,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:13:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:56,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:13:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:56,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:13:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:56,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 13:13:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:56,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:13:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:56,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:13:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:56,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:13:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:56,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:13:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:56,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 13:13:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:56,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 13:13:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:13:56,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 13:13:56,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861672146] [2020-08-21 13:13:56,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:13:56,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 13:13:56,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733584010] [2020-08-21 13:13:56,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 13:13:56,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:13:56,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 13:13:56,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:13:56,781 INFO L87 Difference]: Start difference. First operand 235 states and 267 transitions. Second operand 9 states. [2020-08-21 13:13:57,229 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:13:57,883 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:13:58,780 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:13:59,062 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:13:59,516 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:13:59,743 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:00,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:14:00,316 INFO L93 Difference]: Finished difference Result 487 states and 586 transitions. [2020-08-21 13:14:00,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 13:14:00,317 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-21 13:14:00,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:14:00,320 INFO L225 Difference]: With dead ends: 487 [2020-08-21 13:14:00,320 INFO L226 Difference]: Without dead ends: 280 [2020-08-21 13:14:00,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 13:14:00,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-08-21 13:14:00,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 234. [2020-08-21 13:14:00,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-08-21 13:14:00,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 264 transitions. [2020-08-21 13:14:00,373 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 264 transitions. Word has length 92 [2020-08-21 13:14:00,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:14:00,374 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 264 transitions. [2020-08-21 13:14:00,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 13:14:00,374 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 264 transitions. [2020-08-21 13:14:00,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-21 13:14:00,376 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:14:00,376 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:14:00,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 13:14:00,377 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:14:00,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:14:00,377 INFO L82 PathProgramCache]: Analyzing trace with hash -357754488, now seen corresponding path program 1 times [2020-08-21 13:14:00,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:14:00,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225894152] [2020-08-21 13:14:00,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:14:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:00,648 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:14:00,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:00,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:14:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:00,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:14:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:00,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:00,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:14:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:00,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:14:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:00,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:14:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:00,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:00,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 13:14:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:00,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:00,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:00,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:00,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:00,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:14:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:00,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:00,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:00,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:00,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 13:14:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:00,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 13:14:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:00,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 13:14:00,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225894152] [2020-08-21 13:14:00,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:14:00,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 13:14:00,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238100662] [2020-08-21 13:14:00,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 13:14:00,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:14:00,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 13:14:00,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:14:00,832 INFO L87 Difference]: Start difference. First operand 234 states and 264 transitions. Second operand 9 states. [2020-08-21 13:14:01,864 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:02,119 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:14:02,366 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:02,602 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:03,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:14:03,310 INFO L93 Difference]: Finished difference Result 487 states and 589 transitions. [2020-08-21 13:14:03,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 13:14:03,313 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-08-21 13:14:03,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:14:03,318 INFO L225 Difference]: With dead ends: 487 [2020-08-21 13:14:03,318 INFO L226 Difference]: Without dead ends: 281 [2020-08-21 13:14:03,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 13:14:03,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-08-21 13:14:03,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 239. [2020-08-21 13:14:03,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-21 13:14:03,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 269 transitions. [2020-08-21 13:14:03,381 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 269 transitions. Word has length 108 [2020-08-21 13:14:03,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:14:03,381 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 269 transitions. [2020-08-21 13:14:03,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 13:14:03,382 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 269 transitions. [2020-08-21 13:14:03,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-21 13:14:03,383 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:14:03,383 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:14:03,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 13:14:03,384 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:14:03,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:14:03,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1570518214, now seen corresponding path program 1 times [2020-08-21 13:14:03,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:14:03,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844953405] [2020-08-21 13:14:03,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:14:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:03,674 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:14:03,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:03,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:14:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:03,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:14:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:03,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:03,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:14:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:03,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:14:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:03,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:14:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:03,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:03,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 13:14:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:03,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:03,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:03,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:03,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:14:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:03,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:03,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:03,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:03,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:03,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 13:14:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:03,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 13:14:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:03,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 13:14:03,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844953405] [2020-08-21 13:14:03,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:14:03,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 13:14:03,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973930024] [2020-08-21 13:14:03,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 13:14:03,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:14:03,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 13:14:03,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 13:14:03,856 INFO L87 Difference]: Start difference. First operand 239 states and 269 transitions. Second operand 11 states. [2020-08-21 13:14:04,308 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:04,540 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:04,781 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:05,515 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:05,807 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:06,054 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:07,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:14:07,045 INFO L93 Difference]: Finished difference Result 497 states and 600 transitions. [2020-08-21 13:14:07,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 13:14:07,046 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-21 13:14:07,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:14:07,048 INFO L225 Difference]: With dead ends: 497 [2020-08-21 13:14:07,048 INFO L226 Difference]: Without dead ends: 286 [2020-08-21 13:14:07,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 13:14:07,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-08-21 13:14:07,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 243. [2020-08-21 13:14:07,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-08-21 13:14:07,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 273 transitions. [2020-08-21 13:14:07,092 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 273 transitions. Word has length 108 [2020-08-21 13:14:07,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:14:07,093 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 273 transitions. [2020-08-21 13:14:07,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 13:14:07,093 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 273 transitions. [2020-08-21 13:14:07,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-21 13:14:07,094 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:14:07,094 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:14:07,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 13:14:07,095 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:14:07,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:14:07,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1329978085, now seen corresponding path program 1 times [2020-08-21 13:14:07,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:14:07,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179218797] [2020-08-21 13:14:07,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:14:07,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:07,356 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:14:07,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:07,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:14:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:07,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:14:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:07,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:07,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:14:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:07,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:14:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:07,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:14:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:07,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:07,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:07,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 13:14:07,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:07,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:07,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:07,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:07,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:14:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:07,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:07,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:07,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:07,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 13:14:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:07,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 13:14:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:07,502 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 13:14:07,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179218797] [2020-08-21 13:14:07,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:14:07,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 13:14:07,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496145077] [2020-08-21 13:14:07,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 13:14:07,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:14:07,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 13:14:07,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 13:14:07,506 INFO L87 Difference]: Start difference. First operand 243 states and 273 transitions. Second operand 7 states. [2020-08-21 13:14:07,866 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:14:08,379 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:14:10,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:14:10,195 INFO L93 Difference]: Finished difference Result 679 states and 838 transitions. [2020-08-21 13:14:10,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 13:14:10,195 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-08-21 13:14:10,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:14:10,199 INFO L225 Difference]: With dead ends: 679 [2020-08-21 13:14:10,199 INFO L226 Difference]: Without dead ends: 464 [2020-08-21 13:14:10,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 13:14:10,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-08-21 13:14:10,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 422. [2020-08-21 13:14:10,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2020-08-21 13:14:10,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 489 transitions. [2020-08-21 13:14:10,275 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 489 transitions. Word has length 108 [2020-08-21 13:14:10,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:14:10,276 INFO L479 AbstractCegarLoop]: Abstraction has 422 states and 489 transitions. [2020-08-21 13:14:10,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 13:14:10,276 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 489 transitions. [2020-08-21 13:14:10,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-21 13:14:10,278 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:14:10,278 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:14:10,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 13:14:10,278 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:14:10,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:14:10,279 INFO L82 PathProgramCache]: Analyzing trace with hash 825673247, now seen corresponding path program 1 times [2020-08-21 13:14:10,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:14:10,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817285245] [2020-08-21 13:14:10,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:14:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:10,683 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:14:10,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:10,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:14:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:10,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:14:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:10,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:10,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:14:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:10,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:14:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:10,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:14:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:10,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 13:14:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:10,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:10,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 13:14:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:10,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:10,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:10,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:10,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:14:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:10,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:10,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:10,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:10,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-21 13:14:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:10,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-21 13:14:10,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:10,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 13:14:10,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817285245] [2020-08-21 13:14:10,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:14:10,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 13:14:10,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704217893] [2020-08-21 13:14:10,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 13:14:10,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:14:10,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 13:14:10,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:14:10,924 INFO L87 Difference]: Start difference. First operand 422 states and 489 transitions. Second operand 12 states. [2020-08-21 13:14:11,480 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:14:12,152 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:14:13,124 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:13,415 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:13,664 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:14:13,938 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:14,200 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:15,550 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:14:15,815 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:16,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:14:16,717 INFO L93 Difference]: Finished difference Result 1174 states and 1444 transitions. [2020-08-21 13:14:16,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 13:14:16,722 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-08-21 13:14:16,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:14:16,731 INFO L225 Difference]: With dead ends: 1174 [2020-08-21 13:14:16,731 INFO L226 Difference]: Without dead ends: 854 [2020-08-21 13:14:16,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 13:14:16,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2020-08-21 13:14:16,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 732. [2020-08-21 13:14:16,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-08-21 13:14:16,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 840 transitions. [2020-08-21 13:14:16,934 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 840 transitions. Word has length 112 [2020-08-21 13:14:16,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:14:16,936 INFO L479 AbstractCegarLoop]: Abstraction has 732 states and 840 transitions. [2020-08-21 13:14:16,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 13:14:16,936 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 840 transitions. [2020-08-21 13:14:16,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-08-21 13:14:16,939 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:14:16,939 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:14:16,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 13:14:16,940 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:14:16,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:14:16,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1258980138, now seen corresponding path program 1 times [2020-08-21 13:14:16,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:14:16,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333640724] [2020-08-21 13:14:16,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:14:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:17,276 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:14:17,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:17,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:14:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:17,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:14:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:17,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:17,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:14:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:17,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:14:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:17,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:14:17,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:17,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 13:14:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:17,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:17,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:17,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:17,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 13:14:17,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:17,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:17,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:17,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:17,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:14:17,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:17,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:17,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:17,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:17,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 13:14:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:17,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:17,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-21 13:14:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:17,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:17,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-21 13:14:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:17,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-21 13:14:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:17,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:17,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:17,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:14:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:17,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:17,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 13:14:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:17,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-21 13:14:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:17,676 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-08-21 13:14:17,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333640724] [2020-08-21 13:14:17,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:14:17,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 13:14:17,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422277254] [2020-08-21 13:14:17,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 13:14:17,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:14:17,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 13:14:17,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 13:14:17,678 INFO L87 Difference]: Start difference. First operand 732 states and 840 transitions. Second operand 16 states. [2020-08-21 13:14:18,546 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:14:18,892 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 13:14:19,158 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 13:14:19,419 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 13:14:20,059 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:14:20,323 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:14:21,159 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 13:14:21,808 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:14:22,319 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 13:14:22,764 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:23,024 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:23,324 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:14:23,855 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:24,273 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:14:24,669 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 13:14:25,402 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:14:25,690 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 13:14:26,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:14:26,432 INFO L93 Difference]: Finished difference Result 1607 states and 1899 transitions. [2020-08-21 13:14:26,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-21 13:14:26,433 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 172 [2020-08-21 13:14:26,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:14:26,442 INFO L225 Difference]: With dead ends: 1607 [2020-08-21 13:14:26,442 INFO L226 Difference]: Without dead ends: 973 [2020-08-21 13:14:26,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=568, Invalid=2084, Unknown=0, NotChecked=0, Total=2652 [2020-08-21 13:14:26,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2020-08-21 13:14:26,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 880. [2020-08-21 13:14:26,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-08-21 13:14:26,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1018 transitions. [2020-08-21 13:14:26,634 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1018 transitions. Word has length 172 [2020-08-21 13:14:26,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:14:26,637 INFO L479 AbstractCegarLoop]: Abstraction has 880 states and 1018 transitions. [2020-08-21 13:14:26,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 13:14:26,637 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1018 transitions. [2020-08-21 13:14:26,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-08-21 13:14:26,645 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:14:26,646 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:14:26,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 13:14:26,647 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:14:26,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:14:26,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1319050440, now seen corresponding path program 1 times [2020-08-21 13:14:26,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:14:26,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250869432] [2020-08-21 13:14:26,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:14:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:26,991 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:14:26,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:14:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:14:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:27,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:14:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:14:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:14:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 13:14:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 13:14:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:27,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:14:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 13:14:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 13:14:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:14:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 13:14:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:14:27,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:14:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-08-21 13:14:27,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:14:27,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 13:14:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:27,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:14:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 13:14:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-21 13:14:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-21 13:14:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:14:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:27,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-08-21 13:14:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-21 13:14:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,517 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 83 proven. 29 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2020-08-21 13:14:27,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250869432] [2020-08-21 13:14:27,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:14:27,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 13:14:27,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855108715] [2020-08-21 13:14:27,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 13:14:27,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:14:27,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 13:14:27,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 13:14:27,520 INFO L87 Difference]: Start difference. First operand 880 states and 1018 transitions. Second operand 15 states. [2020-08-21 13:14:29,250 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:29,541 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:14:29,786 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:14:30,034 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:14:31,388 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:14:32,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:14:32,535 INFO L93 Difference]: Finished difference Result 2336 states and 2809 transitions. [2020-08-21 13:14:32,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 13:14:32,536 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 303 [2020-08-21 13:14:32,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:14:32,544 INFO L225 Difference]: With dead ends: 2336 [2020-08-21 13:14:32,544 INFO L226 Difference]: Without dead ends: 1389 [2020-08-21 13:14:32,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 108 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-21 13:14:32,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2020-08-21 13:14:32,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1170. [2020-08-21 13:14:32,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1170 states. [2020-08-21 13:14:32,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1383 transitions. [2020-08-21 13:14:32,764 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1383 transitions. Word has length 303 [2020-08-21 13:14:32,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:14:32,767 INFO L479 AbstractCegarLoop]: Abstraction has 1170 states and 1383 transitions. [2020-08-21 13:14:32,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 13:14:32,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1383 transitions. [2020-08-21 13:14:32,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-08-21 13:14:32,774 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:14:32,775 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:14:32,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 13:14:32,775 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:14:32,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:14:32,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1689540467, now seen corresponding path program 1 times [2020-08-21 13:14:32,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:14:32,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844504071] [2020-08-21 13:14:32,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:14:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,087 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:14:33,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:14:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:14:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:14:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:14:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:14:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 13:14:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 13:14:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:33,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:14:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 13:14:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 13:14:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:14:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 13:14:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:14:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:14:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 13:14:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-08-21 13:14:33,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:14:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 13:14:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:14:33,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 13:14:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 13:14:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-21 13:14:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:14:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-21 13:14:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-08-21 13:14:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,508 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 90 proven. 38 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2020-08-21 13:14:33,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844504071] [2020-08-21 13:14:33,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:14:33,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 13:14:33,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539622121] [2020-08-21 13:14:33,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 13:14:33,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:14:33,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 13:14:33,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-21 13:14:33,511 INFO L87 Difference]: Start difference. First operand 1170 states and 1383 transitions. Second operand 16 states. [2020-08-21 13:14:34,134 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:14:34,483 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 13:14:34,757 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:14:35,022 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:14:35,716 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:36,671 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:36,943 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:37,462 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:14:38,134 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:38,954 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:39,221 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:39,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:14:39,973 INFO L93 Difference]: Finished difference Result 2221 states and 2663 transitions. [2020-08-21 13:14:39,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 13:14:39,974 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 309 [2020-08-21 13:14:39,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:14:39,981 INFO L225 Difference]: With dead ends: 2221 [2020-08-21 13:14:39,981 INFO L226 Difference]: Without dead ends: 1172 [2020-08-21 13:14:39,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-21 13:14:39,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2020-08-21 13:14:40,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1122. [2020-08-21 13:14:40,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1122 states. [2020-08-21 13:14:40,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1309 transitions. [2020-08-21 13:14:40,235 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1309 transitions. Word has length 309 [2020-08-21 13:14:40,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:14:40,236 INFO L479 AbstractCegarLoop]: Abstraction has 1122 states and 1309 transitions. [2020-08-21 13:14:40,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 13:14:40,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1309 transitions. [2020-08-21 13:14:40,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-08-21 13:14:40,250 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:14:40,251 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:14:40,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 13:14:40,252 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:14:40,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:14:40,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1187991886, now seen corresponding path program 1 times [2020-08-21 13:14:40,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:14:40,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628456558] [2020-08-21 13:14:40,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:14:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,656 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:14:40,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:14:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:14:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:14:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:14:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:14:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 13:14:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 13:14:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:40,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:40,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:14:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:40,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 13:14:40,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 13:14:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:14:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 13:14:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:14:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:14:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 13:14:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-08-21 13:14:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:14:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 13:14:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:14:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 13:14:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-08-21 13:14:40,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-21 13:14:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-08-21 13:14:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:40,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:14:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:40,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-08-21 13:14:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 13:14:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:41,028 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 84 proven. 7 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2020-08-21 13:14:41,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628456558] [2020-08-21 13:14:41,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:14:41,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 13:14:41,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129013379] [2020-08-21 13:14:41,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 13:14:41,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:14:41,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 13:14:41,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-21 13:14:41,031 INFO L87 Difference]: Start difference. First operand 1122 states and 1309 transitions. Second operand 14 states. [2020-08-21 13:14:41,457 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:14:42,307 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190