/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:41:48,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:41:48,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:41:48,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:41:48,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:41:48,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:41:48,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:41:48,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:41:48,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:41:48,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:41:48,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:41:48,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:41:48,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:41:48,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:41:48,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:41:48,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:41:48,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:41:48,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:41:48,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:41:48,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:41:48,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:41:48,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:41:48,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:41:48,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:41:48,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:41:48,279 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:41:48,279 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:41:48,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:41:48,280 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:41:48,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:41:48,281 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:41:48,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:41:48,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:41:48,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:41:48,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:41:48,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:41:48,290 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:41:48,290 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:41:48,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:41:48,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:41:48,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:41:48,295 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 06:41:48,336 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:41:48,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:41:48,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:41:48,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:41:48,339 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:41:48,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:41:48,339 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:41:48,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:41:48,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:41:48,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:41:48,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:41:48,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:41:48,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:41:48,341 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:41:48,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:41:48,342 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:41:48,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:41:48,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:41:48,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:41:48,342 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:41:48,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:41:48,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:41:48,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:41:48,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:41:48,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:41:48,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:41:48,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:41:48,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:41:48,344 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:41:48,345 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; [2020-08-19 06:41:48,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:41:48,664 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:41:48,671 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:41:48,673 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:41:48,673 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:41:48,674 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_productSimulator.cil.c [2020-08-19 06:41:48,745 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c37e28c6/43235f61b77943a59afa9c6dc8345fad/FLAG3fc39e545 [2020-08-19 06:41:49,280 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:41:49,281 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_productSimulator.cil.c [2020-08-19 06:41:49,310 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c37e28c6/43235f61b77943a59afa9c6dc8345fad/FLAG3fc39e545 [2020-08-19 06:41:49,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c37e28c6/43235f61b77943a59afa9c6dc8345fad [2020-08-19 06:41:49,598 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:41:49,600 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:41:49,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:41:49,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:41:49,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:41:49,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:41:49" (1/1) ... [2020-08-19 06:41:49,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2830e110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:41:49, skipping insertion in model container [2020-08-19 06:41:49,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:41:49" (1/1) ... [2020-08-19 06:41:49,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:41:49,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:41:50,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:41:50,068 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:41:50,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:41:50,252 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:41:50,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:41:50 WrapperNode [2020-08-19 06:41:50,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:41:50,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:41:50,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:41:50,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:41:50,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:41:50" (1/1) ... [2020-08-19 06:41:50,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:41:50" (1/1) ... [2020-08-19 06:41:50,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:41:50" (1/1) ... [2020-08-19 06:41:50,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:41:50" (1/1) ... [2020-08-19 06:41:50,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:41:50" (1/1) ... [2020-08-19 06:41:50,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:41:50" (1/1) ... [2020-08-19 06:41:50,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:41:50" (1/1) ... [2020-08-19 06:41:50,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:41:50,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:41:50,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:41:50,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:41:50,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:41:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:41:50,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:41:50,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:41:50,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 06:41:50,401 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 06:41:50,401 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 06:41:50,402 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 06:41:50,402 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 06:41:50,402 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:41:50,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-19 06:41:50,403 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 06:41:50,403 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2020-08-19 06:41:50,403 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__highWaterSensor [2020-08-19 06:41:50,403 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2020-08-19 06:41:50,404 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__lowWaterSensor [2020-08-19 06:41:50,404 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2020-08-19 06:41:50,405 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__methaneAlarm [2020-08-19 06:41:50,405 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 06:41:50,405 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2020-08-19 06:41:50,405 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__role__methaneQuery [2020-08-19 06:41:50,405 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 06:41:50,406 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 06:41:50,406 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 06:41:50,406 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 06:41:50,406 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 06:41:50,408 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 06:41:50,409 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 06:41:50,409 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 06:41:50,409 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 06:41:50,409 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 06:41:50,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 06:41:50,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 06:41:50,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 06:41:50,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 06:41:50,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 06:41:50,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 06:41:50,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 06:41:50,411 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 06:41:50,411 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 06:41:50,411 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 06:41:50,411 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 06:41:50,411 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 06:41:50,411 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 06:41:50,411 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 06:41:50,412 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 06:41:50,412 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 06:41:50,412 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 06:41:50,412 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 06:41:50,412 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 06:41:50,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:41:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:41:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 06:41:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 06:41:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 06:41:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 06:41:50,414 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 06:41:50,414 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 06:41:50,414 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 06:41:50,414 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 06:41:50,415 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 06:41:50,415 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 06:41:50,415 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 06:41:50,415 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 06:41:50,415 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 06:41:50,415 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:41:50,415 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 06:41:50,416 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 06:41:50,416 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 06:41:50,416 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-19 06:41:50,416 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 06:41:50,416 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 06:41:50,416 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 06:41:50,417 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 06:41:50,417 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 06:41:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 06:41:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 06:41:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 06:41:50,419 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 06:41:50,419 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 06:41:50,419 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2020-08-19 06:41:50,420 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 06:41:50,420 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__highWaterSensor [2020-08-19 06:41:50,420 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2020-08-19 06:41:50,421 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 06:41:50,421 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__lowWaterSensor [2020-08-19 06:41:50,421 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2020-08-19 06:41:50,421 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 06:41:50,421 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__methaneAlarm [2020-08-19 06:41:50,421 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2020-08-19 06:41:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__role__methaneQuery [2020-08-19 06:41:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 06:41:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 06:41:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 06:41:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 06:41:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 06:41:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 06:41:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 06:41:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 06:41:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 06:41:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 06:41:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 06:41:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 06:41:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 06:41:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 06:41:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 06:41:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 06:41:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 06:41:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 06:41:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:41:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 06:41:50,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:41:51,542 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:41:51,543 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 06:41:51,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:41:51 BoogieIcfgContainer [2020-08-19 06:41:51,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:41:51,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:41:51,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:41:51,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:41:51,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:41:49" (1/3) ... [2020-08-19 06:41:51,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e83e8e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:41:51, skipping insertion in model container [2020-08-19 06:41:51,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:41:50" (2/3) ... [2020-08-19 06:41:51,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e83e8e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:41:51, skipping insertion in model container [2020-08-19 06:41:51,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:41:51" (3/3) ... [2020-08-19 06:41:51,569 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_productSimulator.cil.c [2020-08-19 06:41:51,583 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:41:51,595 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:41:51,609 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:41:51,643 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:41:51,644 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:41:51,644 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:41:51,644 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:41:51,645 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:41:51,648 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:41:51,649 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:41:51,649 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:41:51,681 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states. [2020-08-19 06:41:51,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-19 06:41:51,702 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:41:51,704 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:41:51,704 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:41:51,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:41:51,711 INFO L82 PathProgramCache]: Analyzing trace with hash 88276295, now seen corresponding path program 1 times [2020-08-19 06:41:51,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:41:51,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120664883] [2020-08-19 06:41:51,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:41:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:52,514 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 06:41:52,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:41:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:52,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:41:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:52,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:41:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:52,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:41:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:52,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:41:52,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:52,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 06:41:52,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:52,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:41:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:52,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 06:41:52,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:52,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 06:41:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:52,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:41:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:52,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 06:41:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:52,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 06:41:52,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:52,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 06:41:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:52,650 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 06:41:52,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120664883] [2020-08-19 06:41:52,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:41:52,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:41:52,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143889643] [2020-08-19 06:41:52,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:41:52,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:41:52,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:41:52,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:41:52,678 INFO L87 Difference]: Start difference. First operand 245 states. Second operand 5 states. [2020-08-19 06:41:54,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:41:54,927 INFO L93 Difference]: Finished difference Result 442 states and 581 transitions. [2020-08-19 06:41:54,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 06:41:54,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-08-19 06:41:54,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:41:54,949 INFO L225 Difference]: With dead ends: 442 [2020-08-19 06:41:54,949 INFO L226 Difference]: Without dead ends: 251 [2020-08-19 06:41:54,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:41:54,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-08-19 06:41:55,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 202. [2020-08-19 06:41:55,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-08-19 06:41:55,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 247 transitions. [2020-08-19 06:41:55,074 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 247 transitions. Word has length 78 [2020-08-19 06:41:55,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:41:55,074 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 247 transitions. [2020-08-19 06:41:55,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:41:55,075 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 247 transitions. [2020-08-19 06:41:55,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-19 06:41:55,079 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:41:55,080 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:41:55,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:41:55,080 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:41:55,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:41:55,081 INFO L82 PathProgramCache]: Analyzing trace with hash 128874418, now seen corresponding path program 1 times [2020-08-19 06:41:55,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:41:55,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612557034] [2020-08-19 06:41:55,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:41:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:55,490 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 06:41:55,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:41:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:55,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:41:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:55,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:41:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:55,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:41:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:55,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:41:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:55,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 06:41:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:55,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:41:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:55,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 06:41:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:55,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 06:41:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:55,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:41:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:55,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 06:41:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:55,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 06:41:55,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:55,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 06:41:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:55,589 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 06:41:55,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612557034] [2020-08-19 06:41:55,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:41:55,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 06:41:55,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138416424] [2020-08-19 06:41:55,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 06:41:55,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:41:55,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 06:41:55,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:41:55,593 INFO L87 Difference]: Start difference. First operand 202 states and 247 transitions. Second operand 6 states. [2020-08-19 06:41:56,291 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 06:41:57,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:41:57,970 INFO L93 Difference]: Finished difference Result 366 states and 459 transitions. [2020-08-19 06:41:57,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 06:41:57,971 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-08-19 06:41:57,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:41:57,976 INFO L225 Difference]: With dead ends: 366 [2020-08-19 06:41:57,976 INFO L226 Difference]: Without dead ends: 235 [2020-08-19 06:41:57,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:41:57,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-08-19 06:41:58,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 193. [2020-08-19 06:41:58,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-08-19 06:41:58,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 235 transitions. [2020-08-19 06:41:58,040 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 235 transitions. Word has length 79 [2020-08-19 06:41:58,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:41:58,041 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 235 transitions. [2020-08-19 06:41:58,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 06:41:58,041 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 235 transitions. [2020-08-19 06:41:58,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 06:41:58,045 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:41:58,045 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:41:58,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:41:58,046 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:41:58,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:41:58,046 INFO L82 PathProgramCache]: Analyzing trace with hash 2075074883, now seen corresponding path program 1 times [2020-08-19 06:41:58,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:41:58,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443174313] [2020-08-19 06:41:58,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:41:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:58,458 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 06:41:58,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:41:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:58,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:41:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:58,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:41:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:58,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:41:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:58,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:41:58,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:58,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 06:41:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:58,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:41:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:58,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 06:41:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:58,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 06:41:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:58,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:41:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:58,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 06:41:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:58,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 06:41:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:58,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 06:41:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:58,663 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 06:41:58,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443174313] [2020-08-19 06:41:58,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:41:58,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 06:41:58,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688639338] [2020-08-19 06:41:58,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 06:41:58,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:41:58,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 06:41:58,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:41:58,666 INFO L87 Difference]: Start difference. First operand 193 states and 235 transitions. Second operand 12 states. [2020-08-19 06:41:59,222 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 06:41:59,891 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-08-19 06:42:00,741 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2020-08-19 06:42:01,791 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 06:42:02,168 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-19 06:42:05,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:42:05,828 INFO L93 Difference]: Finished difference Result 628 states and 796 transitions. [2020-08-19 06:42:05,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 06:42:05,831 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-19 06:42:05,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:42:05,836 INFO L225 Difference]: With dead ends: 628 [2020-08-19 06:42:05,837 INFO L226 Difference]: Without dead ends: 476 [2020-08-19 06:42:05,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-08-19 06:42:05,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-08-19 06:42:05,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 385. [2020-08-19 06:42:05,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-19 06:42:05,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 480 transitions. [2020-08-19 06:42:05,965 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 480 transitions. Word has length 84 [2020-08-19 06:42:05,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:42:05,966 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 480 transitions. [2020-08-19 06:42:05,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 06:42:05,966 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 480 transitions. [2020-08-19 06:42:05,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-19 06:42:05,969 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:42:05,969 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:42:05,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:42:05,970 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:42:05,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:42:05,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1129127896, now seen corresponding path program 1 times [2020-08-19 06:42:05,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:42:05,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605436347] [2020-08-19 06:42:05,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:42:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:06,369 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 06:42:06,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:42:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:06,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:42:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:06,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:42:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:06,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:06,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:42:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:06,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 06:42:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:06,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:42:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:06,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 06:42:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:06,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 06:42:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:06,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:42:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:06,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 06:42:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:06,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 06:42:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:06,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 06:42:06,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:06,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 06:42:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:06,609 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 06:42:06,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605436347] [2020-08-19 06:42:06,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:42:06,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-19 06:42:06,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358622643] [2020-08-19 06:42:06,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 06:42:06,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:42:06,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 06:42:06,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-08-19 06:42:06,614 INFO L87 Difference]: Start difference. First operand 385 states and 480 transitions. Second operand 16 states. [2020-08-19 06:42:07,436 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 06:42:08,072 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-08-19 06:42:08,903 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2020-08-19 06:42:09,709 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-19 06:42:10,606 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 06:42:11,658 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2020-08-19 06:42:12,420 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 215 [2020-08-19 06:42:13,144 WARN L193 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 215 [2020-08-19 06:42:13,505 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-19 06:42:13,875 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-19 06:42:14,380 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-08-19 06:42:14,818 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-08-19 06:42:15,307 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-08-19 06:42:19,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:42:19,733 INFO L93 Difference]: Finished difference Result 1582 states and 2206 transitions. [2020-08-19 06:42:19,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-19 06:42:19,737 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 90 [2020-08-19 06:42:19,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:42:19,750 INFO L225 Difference]: With dead ends: 1582 [2020-08-19 06:42:19,750 INFO L226 Difference]: Without dead ends: 1238 [2020-08-19 06:42:19,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=352, Invalid=1208, Unknown=0, NotChecked=0, Total=1560 [2020-08-19 06:42:19,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2020-08-19 06:42:20,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1109. [2020-08-19 06:42:20,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1109 states. [2020-08-19 06:42:20,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1462 transitions. [2020-08-19 06:42:20,100 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1462 transitions. Word has length 90 [2020-08-19 06:42:20,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:42:20,101 INFO L479 AbstractCegarLoop]: Abstraction has 1109 states and 1462 transitions. [2020-08-19 06:42:20,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 06:42:20,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1462 transitions. [2020-08-19 06:42:20,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-19 06:42:20,105 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:42:20,105 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:42:20,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:42:20,106 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:42:20,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:42:20,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1905240978, now seen corresponding path program 1 times [2020-08-19 06:42:20,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:42:20,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423982089] [2020-08-19 06:42:20,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:42:20,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,418 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 06:42:20,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:42:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:42:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:42:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:42:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 06:42:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:42:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 06:42:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 06:42:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:42:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 06:42:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 06:42:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 06:42:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 06:42:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-19 06:42:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,596 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 06:42:20,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423982089] [2020-08-19 06:42:20,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:42:20,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:42:20,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523032551] [2020-08-19 06:42:20,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:42:20,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:42:20,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:42:20,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:42:20,598 INFO L87 Difference]: Start difference. First operand 1109 states and 1462 transitions. Second operand 8 states. [2020-08-19 06:42:21,127 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 06:42:24,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:42:24,583 INFO L93 Difference]: Finished difference Result 2674 states and 3837 transitions. [2020-08-19 06:42:24,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 06:42:24,584 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-19 06:42:24,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:42:24,597 INFO L225 Difference]: With dead ends: 2674 [2020-08-19 06:42:24,597 INFO L226 Difference]: Without dead ends: 1606 [2020-08-19 06:42:24,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-08-19 06:42:24,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2020-08-19 06:42:24,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1507. [2020-08-19 06:42:24,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1507 states. [2020-08-19 06:42:24,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 2004 transitions. [2020-08-19 06:42:24,891 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 2004 transitions. Word has length 94 [2020-08-19 06:42:24,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:42:24,892 INFO L479 AbstractCegarLoop]: Abstraction has 1507 states and 2004 transitions. [2020-08-19 06:42:24,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:42:24,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 2004 transitions. [2020-08-19 06:42:24,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-08-19 06:42:24,896 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:42:24,897 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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] [2020-08-19 06:42:24,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 06:42:24,897 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:42:24,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:42:24,897 INFO L82 PathProgramCache]: Analyzing trace with hash -509299228, now seen corresponding path program 1 times [2020-08-19 06:42:24,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:42:24,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193393671] [2020-08-19 06:42:24,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:42:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:25,235 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 06:42:25,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:42:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:25,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:42:25,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:25,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:42:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:25,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:25,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:42:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:25,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 06:42:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:25,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:42:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:25,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 06:42:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:25,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 06:42:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:25,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:42:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:25,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 06:42:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:25,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-19 06:42:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:25,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 06:42:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:25,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 06:42:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:25,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:25,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:25,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 06:42:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:25,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-19 06:42:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:25,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 06:42:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:25,454 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-08-19 06:42:25,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193393671] [2020-08-19 06:42:25,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:42:25,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 06:42:25,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811106705] [2020-08-19 06:42:25,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 06:42:25,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:42:25,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 06:42:25,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:42:25,457 INFO L87 Difference]: Start difference. First operand 1507 states and 2004 transitions. Second operand 12 states. [2020-08-19 06:42:26,345 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 210 [2020-08-19 06:42:27,270 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 06:42:30,568 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 06:42:34,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:42:34,335 INFO L93 Difference]: Finished difference Result 2888 states and 4054 transitions. [2020-08-19 06:42:34,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-19 06:42:34,336 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 122 [2020-08-19 06:42:34,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:42:34,349 INFO L225 Difference]: With dead ends: 2888 [2020-08-19 06:42:34,350 INFO L226 Difference]: Without dead ends: 1787 [2020-08-19 06:42:34,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=314, Invalid=1018, Unknown=0, NotChecked=0, Total=1332 [2020-08-19 06:42:34,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2020-08-19 06:42:34,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1658. [2020-08-19 06:42:34,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1658 states. [2020-08-19 06:42:34,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2197 transitions. [2020-08-19 06:42:34,721 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2197 transitions. Word has length 122 [2020-08-19 06:42:34,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:42:34,722 INFO L479 AbstractCegarLoop]: Abstraction has 1658 states and 2197 transitions. [2020-08-19 06:42:34,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 06:42:34,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2197 transitions. [2020-08-19 06:42:34,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-08-19 06:42:34,728 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:42:34,729 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:42:34,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 06:42:34,729 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:42:34,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:42:34,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1104863335, now seen corresponding path program 1 times [2020-08-19 06:42:34,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:42:34,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384136538] [2020-08-19 06:42:34,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:42:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:35,125 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 06:42:35,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:42:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:35,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:42:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:35,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:42:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:35,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:35,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:42:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:35,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 06:42:35,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:35,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:42:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:35,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 06:42:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:35,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 06:42:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:35,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:42:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:35,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 06:42:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:35,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-19 06:42:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:35,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 06:42:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:35,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:35,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:35,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:35,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:35,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:35,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:35,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:42:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:35,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:35,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 06:42:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:35,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:35,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-19 06:42:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:35,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-19 06:42:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:35,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:35,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:35,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:35,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-08-19 06:42:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:35,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-19 06:42:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:35,475 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-08-19 06:42:35,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384136538] [2020-08-19 06:42:35,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:42:35,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 06:42:35,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506543375] [2020-08-19 06:42:35,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 06:42:35,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:42:35,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 06:42:35,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-19 06:42:35,479 INFO L87 Difference]: Start difference. First operand 1658 states and 2197 transitions. Second operand 11 states. [2020-08-19 06:42:37,610 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 06:42:37,894 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 06:42:38,219 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 06:42:39,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:42:39,994 INFO L93 Difference]: Finished difference Result 3027 states and 4240 transitions. [2020-08-19 06:42:40,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 06:42:40,000 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 170 [2020-08-19 06:42:40,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:42:40,012 INFO L225 Difference]: With dead ends: 3027 [2020-08-19 06:42:40,013 INFO L226 Difference]: Without dead ends: 1798 [2020-08-19 06:42:40,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2020-08-19 06:42:40,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2020-08-19 06:42:40,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1658. [2020-08-19 06:42:40,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1658 states. [2020-08-19 06:42:40,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2195 transitions. [2020-08-19 06:42:40,455 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2195 transitions. Word has length 170 [2020-08-19 06:42:40,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:42:40,455 INFO L479 AbstractCegarLoop]: Abstraction has 1658 states and 2195 transitions. [2020-08-19 06:42:40,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 06:42:40,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2195 transitions. [2020-08-19 06:42:40,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-19 06:42:40,462 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:42:40,462 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:42:40,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 06:42:40,463 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:42:40,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:42:40,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1658452204, now seen corresponding path program 1 times [2020-08-19 06:42:40,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:42:40,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102486026] [2020-08-19 06:42:40,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:42:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:40,796 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 06:42:40,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:42:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:40,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:42:40,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:40,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:42:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:40,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:40,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:42:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:40,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 06:42:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:40,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:42:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:40,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 06:42:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:40,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 06:42:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:40,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:42:40,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:40,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 06:42:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:40,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 06:42:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:40,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:40,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:40,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:40,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:40,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:42:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 06:42:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-19 06:42:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-19 06:42:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-08-19 06:42:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-19 06:42:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,353 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-08-19 06:42:41,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102486026] [2020-08-19 06:42:41,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:42:41,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 06:42:41,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168494847] [2020-08-19 06:42:41,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 06:42:41,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:42:41,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 06:42:41,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:42:41,360 INFO L87 Difference]: Start difference. First operand 1658 states and 2195 transitions. Second operand 12 states. [2020-08-19 06:42:43,945 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-19 06:42:44,247 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-19 06:42:44,535 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 06:42:44,836 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 06:42:47,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:42:47,002 INFO L93 Difference]: Finished difference Result 3435 states and 4802 transitions. [2020-08-19 06:42:47,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 06:42:47,003 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 166 [2020-08-19 06:42:47,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:42:47,015 INFO L225 Difference]: With dead ends: 3435 [2020-08-19 06:42:47,015 INFO L226 Difference]: Without dead ends: 1818 [2020-08-19 06:42:47,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2020-08-19 06:42:47,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2020-08-19 06:42:47,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1678. [2020-08-19 06:42:47,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1678 states. [2020-08-19 06:42:47,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 2217 transitions. [2020-08-19 06:42:47,448 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 2217 transitions. Word has length 166 [2020-08-19 06:42:47,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:42:47,448 INFO L479 AbstractCegarLoop]: Abstraction has 1678 states and 2217 transitions. [2020-08-19 06:42:47,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 06:42:47,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 2217 transitions. [2020-08-19 06:42:47,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-08-19 06:42:47,454 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:42:47,454 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:42:47,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 06:42:47,455 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:42:47,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:42:47,455 INFO L82 PathProgramCache]: Analyzing trace with hash 47025257, now seen corresponding path program 1 times [2020-08-19 06:42:47,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:42:47,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945630323] [2020-08-19 06:42:47,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:42:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:47,764 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 06:42:47,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:42:47,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:47,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:42:47,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:47,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:42:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:47,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:47,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:42:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:47,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 06:42:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:47,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:42:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:47,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 06:42:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:47,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 06:42:47,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:47,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:42:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:47,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 06:42:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:47,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-19 06:42:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:47,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 06:42:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:47,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:47,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:47,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:47,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:47,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:47,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:47,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:47,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:42:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:47,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:47,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 06:42:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:47,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:47,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-19 06:42:47,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:47,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-19 06:42:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:47,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:47,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:47,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:47,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-08-19 06:42:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:47,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-19 06:42:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:47,984 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-08-19 06:42:47,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945630323] [2020-08-19 06:42:47,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:42:47,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 06:42:47,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520515157] [2020-08-19 06:42:47,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 06:42:47,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:42:47,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 06:42:47,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-08-19 06:42:47,987 INFO L87 Difference]: Start difference. First operand 1678 states and 2217 transitions. Second operand 10 states.