/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:34:13,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:34:13,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:34:13,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:34:13,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:34:13,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:34:13,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:34:13,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:34:13,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:34:13,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:34:13,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:34:13,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:34:13,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:34:13,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:34:13,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:34:13,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:34:13,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:34:13,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:34:13,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:34:13,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:34:13,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:34:13,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:34:13,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:34:13,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:34:13,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:34:13,280 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:34:13,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:34:13,287 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:34:13,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:34:13,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 02:34:13,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:34:13,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:34:13,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:34:13,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:34:13,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:34:13,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:34:13,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:34:13,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:34:13,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:34:13,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:34:13,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:34:13,301 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 02:34:13,340 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:34:13,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:34:13,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:34:13,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:34:13,343 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:34:13,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:34:13,344 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:34:13,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:34:13,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:34:13,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:34:13,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:34:13,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:34:13,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:34:13,346 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:34:13,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:34:13,347 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:34:13,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:34:13,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:34:13,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:34:13,347 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:34:13,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:34:13,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:34:13,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:34:13,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:34:13,349 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:34:13,349 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:34:13,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:34:13,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:34:13,349 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:34:13,350 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=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:34:13,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:34:13,633 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:34:13,637 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:34:13,639 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:34:13,639 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:34:13,640 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product38.cil.c [2020-08-19 02:34:13,707 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0c5f65f9/08b44a1749204c738eea6654e7895bba/FLAG93cf7b8fb [2020-08-19 02:34:14,226 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:34:14,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product38.cil.c [2020-08-19 02:34:14,241 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0c5f65f9/08b44a1749204c738eea6654e7895bba/FLAG93cf7b8fb [2020-08-19 02:34:14,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0c5f65f9/08b44a1749204c738eea6654e7895bba [2020-08-19 02:34:14,558 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:34:14,560 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:34:14,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:34:14,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:34:14,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:34:14,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:34:14" (1/1) ... [2020-08-19 02:34:14,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bbef4a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:14, skipping insertion in model container [2020-08-19 02:34:14,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:34:14" (1/1) ... [2020-08-19 02:34:14,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:34:14,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:34:15,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:34:15,126 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:34:15,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:34:15,270 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:34:15,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:15 WrapperNode [2020-08-19 02:34:15,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:34:15,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:34:15,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:34:15,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:34:15,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:15" (1/1) ... [2020-08-19 02:34:15,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:15" (1/1) ... [2020-08-19 02:34:15,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:15" (1/1) ... [2020-08-19 02:34:15,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:15" (1/1) ... [2020-08-19 02:34:15,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:15" (1/1) ... [2020-08-19 02:34:15,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:15" (1/1) ... [2020-08-19 02:34:15,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:15" (1/1) ... [2020-08-19 02:34:15,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:34:15,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:34:15,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:34:15,360 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:34:15,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:15" (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 02:34:15,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:34:15,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:34:15,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 02:34:15,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 02:34:15,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 02:34:15,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 02:34:15,425 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 02:34:15,425 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 02:34:15,425 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 02:34:15,426 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 02:34:15,426 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 02:34:15,426 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 02:34:15,427 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 02:34:15,427 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 02:34:15,427 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 02:34:15,428 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 02:34:15,428 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 02:34:15,428 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 02:34:15,428 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 02:34:15,428 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 02:34:15,429 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 02:34:15,429 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 02:34:15,430 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 02:34:15,430 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 02:34:15,431 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 02:34:15,432 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 02:34:15,432 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:34:15,433 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 02:34:15,433 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 02:34:15,433 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 02:34:15,433 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 02:34:15,433 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 02:34:15,433 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 02:34:15,434 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 02:34:15,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 02:34:15,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 02:34:15,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 02:34:15,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 02:34:15,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 02:34:15,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 02:34:15,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:34:15,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:34:15,435 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 02:34:15,435 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 02:34:15,435 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 02:34:15,435 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 02:34:15,436 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 02:34:15,436 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 02:34:15,436 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 02:34:15,436 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 02:34:15,436 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 02:34:15,436 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 02:34:15,436 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 02:34:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 02:34:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 02:34:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 02:34:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 02:34:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 02:34:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 02:34:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 02:34:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 02:34:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 02:34:15,439 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 02:34:15,439 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 02:34:15,439 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 02:34:15,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:34:15,439 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 02:34:15,439 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 02:34:15,439 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 02:34:15,440 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 02:34:15,440 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 02:34:15,441 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 02:34:15,441 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 02:34:15,441 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:34:15,442 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 02:34:15,442 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 02:34:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 02:34:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 02:34:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 02:34:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 02:34:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 02:34:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:34:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 02:34:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 02:34:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:34:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 02:34:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 02:34:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:34:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 02:34:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 02:34:15,446 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 02:34:15,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:34:15,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 02:34:15,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:34:18,629 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:34:18,630 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 02:34:18,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:34:18 BoogieIcfgContainer [2020-08-19 02:34:18,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:34:18,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:34:18,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:34:18,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:34:18,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:34:14" (1/3) ... [2020-08-19 02:34:18,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e070c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:34:18, skipping insertion in model container [2020-08-19 02:34:18,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:15" (2/3) ... [2020-08-19 02:34:18,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e070c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:34:18, skipping insertion in model container [2020-08-19 02:34:18,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:34:18" (3/3) ... [2020-08-19 02:34:18,644 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product38.cil.c [2020-08-19 02:34:18,655 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:34:18,663 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:34:18,677 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:34:18,698 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:34:18,699 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:34:18,699 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:34:18,699 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:34:18,699 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:34:18,699 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:34:18,699 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:34:18,700 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:34:18,721 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-19 02:34:18,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 02:34:18,732 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:18,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:34:18,734 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:18,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:18,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1698741088, now seen corresponding path program 1 times [2020-08-19 02:34:18,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:18,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952326990] [2020-08-19 02:34:18,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:19,405 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:19,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:19,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:19,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:19,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:19,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:19,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:19,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:19,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 02:34:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:19,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 02:34:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:19,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:19,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952326990] [2020-08-19 02:34:19,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:19,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 02:34:19,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669527748] [2020-08-19 02:34:19,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 02:34:19,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:19,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 02:34:19,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:34:19,611 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 4 states. [2020-08-19 02:34:20,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:20,865 INFO L93 Difference]: Finished difference Result 296 states and 387 transitions. [2020-08-19 02:34:20,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 02:34:20,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 02:34:20,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:20,894 INFO L225 Difference]: With dead ends: 296 [2020-08-19 02:34:20,895 INFO L226 Difference]: Without dead ends: 165 [2020-08-19 02:34:20,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:34:20,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-19 02:34:21,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-08-19 02:34:21,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-19 02:34:21,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 155 transitions. [2020-08-19 02:34:21,008 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 155 transitions. Word has length 51 [2020-08-19 02:34:21,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:21,009 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 155 transitions. [2020-08-19 02:34:21,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 02:34:21,009 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 155 transitions. [2020-08-19 02:34:21,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 02:34:21,013 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:21,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:34:21,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:34:21,014 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:21,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:21,015 INFO L82 PathProgramCache]: Analyzing trace with hash 160126664, now seen corresponding path program 1 times [2020-08-19 02:34:21,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:21,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834752178] [2020-08-19 02:34:21,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:21,479 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:21,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:21,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:21,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:21,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:21,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:21,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:21,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:21,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:21,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:21,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:34:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:21,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:34:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:21,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:21,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834752178] [2020-08-19 02:34:21,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:21,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 02:34:21,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615945999] [2020-08-19 02:34:21,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:34:21,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:21,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:34:21,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:34:21,569 INFO L87 Difference]: Start difference. First operand 132 states and 155 transitions. Second operand 5 states. [2020-08-19 02:34:22,051 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:22,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:22,882 INFO L93 Difference]: Finished difference Result 237 states and 294 transitions. [2020-08-19 02:34:22,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 02:34:22,884 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 02:34:22,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:22,887 INFO L225 Difference]: With dead ends: 237 [2020-08-19 02:34:22,887 INFO L226 Difference]: Without dead ends: 155 [2020-08-19 02:34:22,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:34:22,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-19 02:34:22,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2020-08-19 02:34:22,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-19 02:34:22,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions. [2020-08-19 02:34:22,927 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 52 [2020-08-19 02:34:22,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:22,927 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 143 transitions. [2020-08-19 02:34:22,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:34:22,927 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions. [2020-08-19 02:34:22,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 02:34:22,930 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:22,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:34:22,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:34:22,930 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:22,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:22,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1051645430, now seen corresponding path program 1 times [2020-08-19 02:34:22,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:22,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342477484] [2020-08-19 02:34:22,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:23,269 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:23,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:23,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:23,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:23,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:23,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:23,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:23,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:23,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 02:34:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:23,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 02:34:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:23,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:23,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342477484] [2020-08-19 02:34:23,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:23,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:34:23,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887280134] [2020-08-19 02:34:23,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:34:23,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:23,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:34:23,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:34:23,386 INFO L87 Difference]: Start difference. First operand 123 states and 143 transitions. Second operand 9 states. [2020-08-19 02:34:23,845 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:24,192 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:24,430 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:24,666 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:25,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:25,931 INFO L93 Difference]: Finished difference Result 250 states and 313 transitions. [2020-08-19 02:34:25,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 02:34:25,932 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-19 02:34:25,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:25,935 INFO L225 Difference]: With dead ends: 250 [2020-08-19 02:34:25,935 INFO L226 Difference]: Without dead ends: 155 [2020-08-19 02:34:25,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 02:34:25,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-19 02:34:25,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2020-08-19 02:34:25,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-19 02:34:25,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2020-08-19 02:34:25,988 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 57 [2020-08-19 02:34:25,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:25,991 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2020-08-19 02:34:25,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:34:25,991 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2020-08-19 02:34:26,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 02:34:26,002 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:26,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:34:26,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:34:26,002 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:26,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:26,003 INFO L82 PathProgramCache]: Analyzing trace with hash 23828646, now seen corresponding path program 1 times [2020-08-19 02:34:26,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:26,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481412686] [2020-08-19 02:34:26,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:26,312 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:26,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:26,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:26,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:26,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:26,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:26,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:26,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:26,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 02:34:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:26,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:26,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:26,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:26,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 02:34:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:26,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 02:34:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:26,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:26,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481412686] [2020-08-19 02:34:26,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:26,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 02:34:26,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639732587] [2020-08-19 02:34:26,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 02:34:26,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:26,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 02:34:26,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:34:26,427 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand 7 states. [2020-08-19 02:34:26,826 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:28,023 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:28,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:28,728 INFO L93 Difference]: Finished difference Result 349 states and 441 transitions. [2020-08-19 02:34:28,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 02:34:28,728 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-08-19 02:34:28,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:28,732 INFO L225 Difference]: With dead ends: 349 [2020-08-19 02:34:28,732 INFO L226 Difference]: Without dead ends: 254 [2020-08-19 02:34:28,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-19 02:34:28,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-19 02:34:28,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 205. [2020-08-19 02:34:28,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-08-19 02:34:28,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 235 transitions. [2020-08-19 02:34:28,785 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 235 transitions. Word has length 70 [2020-08-19 02:34:28,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:28,785 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 235 transitions. [2020-08-19 02:34:28,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 02:34:28,786 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 235 transitions. [2020-08-19 02:34:28,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 02:34:28,787 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:28,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:34:28,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:34:28,788 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:28,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:28,788 INFO L82 PathProgramCache]: Analyzing trace with hash 765865706, now seen corresponding path program 1 times [2020-08-19 02:34:28,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:28,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964492136] [2020-08-19 02:34:28,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:29,073 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:29,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:29,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:29,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:29,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:29,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:29,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:29,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 02:34:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:29,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:29,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:29,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:29,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:34:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:29,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 02:34:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:29,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 02:34:29,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:29,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:29,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964492136] [2020-08-19 02:34:29,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:29,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:34:29,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471231684] [2020-08-19 02:34:29,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:34:29,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:29,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:34:29,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:34:29,217 INFO L87 Difference]: Start difference. First operand 205 states and 235 transitions. Second operand 9 states. [2020-08-19 02:34:29,704 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:31,012 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:31,328 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:31,589 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:31,828 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:33,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:33,012 INFO L93 Difference]: Finished difference Result 611 states and 771 transitions. [2020-08-19 02:34:33,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 02:34:33,012 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-19 02:34:33,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:33,016 INFO L225 Difference]: With dead ends: 611 [2020-08-19 02:34:33,016 INFO L226 Difference]: Without dead ends: 434 [2020-08-19 02:34:33,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 02:34:33,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-08-19 02:34:33,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 358. [2020-08-19 02:34:33,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-08-19 02:34:33,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 410 transitions. [2020-08-19 02:34:33,102 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 410 transitions. Word has length 84 [2020-08-19 02:34:33,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:33,103 INFO L479 AbstractCegarLoop]: Abstraction has 358 states and 410 transitions. [2020-08-19 02:34:33,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:34:33,103 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 410 transitions. [2020-08-19 02:34:33,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 02:34:33,105 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:33,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:34:33,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:34:33,106 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:33,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:33,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1305842374, now seen corresponding path program 1 times [2020-08-19 02:34:33,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:33,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556942861] [2020-08-19 02:34:33,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,400 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:33,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 02:34:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:34:33,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:33,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:34:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 02:34:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 02:34:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:33,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556942861] [2020-08-19 02:34:33,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:33,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 02:34:33,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079082691] [2020-08-19 02:34:33,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:34:33,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:33,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:34:33,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:34:33,620 INFO L87 Difference]: Start difference. First operand 358 states and 410 transitions. Second operand 10 states. [2020-08-19 02:34:34,215 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:35,461 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:35,699 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:35,964 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:36,285 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:37,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:37,407 INFO L93 Difference]: Finished difference Result 802 states and 995 transitions. [2020-08-19 02:34:37,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 02:34:37,408 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-19 02:34:37,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:37,413 INFO L225 Difference]: With dead ends: 802 [2020-08-19 02:34:37,413 INFO L226 Difference]: Without dead ends: 472 [2020-08-19 02:34:37,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-19 02:34:37,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-08-19 02:34:37,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 357. [2020-08-19 02:34:37,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-08-19 02:34:37,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 407 transitions. [2020-08-19 02:34:37,494 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 407 transitions. Word has length 88 [2020-08-19 02:34:37,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:37,495 INFO L479 AbstractCegarLoop]: Abstraction has 357 states and 407 transitions. [2020-08-19 02:34:37,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:34:37,495 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 407 transitions. [2020-08-19 02:34:37,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-19 02:34:37,496 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:37,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:34:37,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:34:37,497 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:37,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:37,497 INFO L82 PathProgramCache]: Analyzing trace with hash -638509814, now seen corresponding path program 1 times [2020-08-19 02:34:37,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:37,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148248504] [2020-08-19 02:34:37,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:37,806 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:37,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:37,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:37,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:37,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:37,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:37,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:37,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:37,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 02:34:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:37,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:34:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:37,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:37,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:37,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:37,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:34:37,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:37,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 02:34:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:37,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 02:34:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:37,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:37,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148248504] [2020-08-19 02:34:37,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:37,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 02:34:37,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311186163] [2020-08-19 02:34:37,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:34:37,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:37,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:34:37,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:34:37,938 INFO L87 Difference]: Start difference. First operand 357 states and 407 transitions. Second operand 10 states. [2020-08-19 02:34:39,017 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:39,268 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 02:34:39,522 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:39,766 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:40,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:40,661 INFO L93 Difference]: Finished difference Result 805 states and 1004 transitions. [2020-08-19 02:34:40,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 02:34:40,662 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-19 02:34:40,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:40,666 INFO L225 Difference]: With dead ends: 805 [2020-08-19 02:34:40,666 INFO L226 Difference]: Without dead ends: 476 [2020-08-19 02:34:40,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 02:34:40,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-08-19 02:34:40,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 367. [2020-08-19 02:34:40,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-08-19 02:34:40,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 417 transitions. [2020-08-19 02:34:40,740 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 417 transitions. Word has length 89 [2020-08-19 02:34:40,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:40,740 INFO L479 AbstractCegarLoop]: Abstraction has 367 states and 417 transitions. [2020-08-19 02:34:40,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:34:40,741 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 417 transitions. [2020-08-19 02:34:40,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-19 02:34:40,742 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:40,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:34:40,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 02:34:40,743 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:40,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:40,743 INFO L82 PathProgramCache]: Analyzing trace with hash 63090060, now seen corresponding path program 1 times [2020-08-19 02:34:40,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:40,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696068428] [2020-08-19 02:34:40,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,005 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:41,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:41,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 02:34:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:34:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:34:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 02:34:41,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 02:34:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:41,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696068428] [2020-08-19 02:34:41,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:41,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 02:34:41,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349156746] [2020-08-19 02:34:41,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:34:41,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:41,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:34:41,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:34:41,210 INFO L87 Difference]: Start difference. First operand 367 states and 417 transitions. Second operand 12 states. [2020-08-19 02:34:41,971 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:42,223 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:42,460 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:43,185 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:43,448 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:43,724 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:44,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:44,769 INFO L93 Difference]: Finished difference Result 829 states and 1046 transitions. [2020-08-19 02:34:44,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 02:34:44,769 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2020-08-19 02:34:44,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:44,775 INFO L225 Difference]: With dead ends: 829 [2020-08-19 02:34:44,775 INFO L226 Difference]: Without dead ends: 490 [2020-08-19 02:34:44,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-19 02:34:44,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-08-19 02:34:44,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 375. [2020-08-19 02:34:44,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-08-19 02:34:44,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 425 transitions. [2020-08-19 02:34:44,867 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 425 transitions. Word has length 89 [2020-08-19 02:34:44,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:44,868 INFO L479 AbstractCegarLoop]: Abstraction has 375 states and 425 transitions. [2020-08-19 02:34:44,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:34:44,868 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 425 transitions. [2020-08-19 02:34:44,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-19 02:34:44,871 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:44,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:34:44,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 02:34:44,872 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:44,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:44,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1788570957, now seen corresponding path program 1 times [2020-08-19 02:34:44,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:44,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890310799] [2020-08-19 02:34:44,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,150 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:45,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:45,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 02:34:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:34:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:34:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 02:34:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 02:34:45,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:45,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890310799] [2020-08-19 02:34:45,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:45,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 02:34:45,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903141231] [2020-08-19 02:34:45,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:34:45,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:45,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:34:45,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:34:45,359 INFO L87 Difference]: Start difference. First operand 375 states and 425 transitions. Second operand 8 states. [2020-08-19 02:34:46,107 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:46,709 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:49,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:49,115 INFO L93 Difference]: Finished difference Result 1177 states and 1533 transitions. [2020-08-19 02:34:49,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 02:34:49,116 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-08-19 02:34:49,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:49,122 INFO L225 Difference]: With dead ends: 1177 [2020-08-19 02:34:49,122 INFO L226 Difference]: Without dead ends: 830 [2020-08-19 02:34:49,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-19 02:34:49,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2020-08-19 02:34:49,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 685. [2020-08-19 02:34:49,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 685 states. [2020-08-19 02:34:49,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 803 transitions. [2020-08-19 02:34:49,273 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 803 transitions. Word has length 89 [2020-08-19 02:34:49,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:49,275 INFO L479 AbstractCegarLoop]: Abstraction has 685 states and 803 transitions. [2020-08-19 02:34:49,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:34:49,275 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 803 transitions. [2020-08-19 02:34:49,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 02:34:49,278 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:49,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:34:49,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 02:34:49,279 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:49,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:49,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1370895219, now seen corresponding path program 1 times [2020-08-19 02:34:49,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:49,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276826392] [2020-08-19 02:34:49,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:49,583 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:49,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:49,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:49,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:49,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:49,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:49,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:49,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:49,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:49,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:34:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:49,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:34:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:49,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 02:34:49,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:49,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:49,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:49,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:49,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:49,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:34:49,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:49,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 02:34:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:49,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 02:34:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:49,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:49,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276826392] [2020-08-19 02:34:49,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:49,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 02:34:49,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491384993] [2020-08-19 02:34:49,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:34:49,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:49,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:34:49,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:34:49,697 INFO L87 Difference]: Start difference. First operand 685 states and 803 transitions. Second operand 8 states. [2020-08-19 02:34:50,455 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:52,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:52,934 INFO L93 Difference]: Finished difference Result 1357 states and 1763 transitions. [2020-08-19 02:34:52,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 02:34:52,938 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-19 02:34:52,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:52,947 INFO L225 Difference]: With dead ends: 1357 [2020-08-19 02:34:52,947 INFO L226 Difference]: Without dead ends: 1354 [2020-08-19 02:34:52,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-19 02:34:52,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2020-08-19 02:34:53,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1127. [2020-08-19 02:34:53,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1127 states. [2020-08-19 02:34:53,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1336 transitions. [2020-08-19 02:34:53,161 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1336 transitions. Word has length 93 [2020-08-19 02:34:53,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:53,162 INFO L479 AbstractCegarLoop]: Abstraction has 1127 states and 1336 transitions. [2020-08-19 02:34:53,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:34:53,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1336 transitions. [2020-08-19 02:34:53,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-19 02:34:53,167 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:53,167 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:34:53,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 02:34:53,168 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:53,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:53,168 INFO L82 PathProgramCache]: Analyzing trace with hash -669184687, now seen corresponding path program 1 times [2020-08-19 02:34:53,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:53,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341944696] [2020-08-19 02:34:53,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,490 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:53,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:53,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:34:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:34:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 02:34:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:34:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:34:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 02:34:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-19 02:34:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-19 02:34:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 02:34:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-19 02:34:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 02:34:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,813 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-19 02:34:53,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341944696] [2020-08-19 02:34:53,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:34:53,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 02:34:53,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306398463] [2020-08-19 02:34:53,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 02:34:53,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:53,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 02:34:53,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-19 02:34:53,816 INFO L87 Difference]: Start difference. First operand 1127 states and 1336 transitions. Second operand 19 states. [2020-08-19 02:34:54,483 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:54,853 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 02:34:55,103 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:34:55,345 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:34:56,058 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:57,258 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:57,622 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:59,007 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:59,282 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:59,559 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:59,827 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:00,074 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:00,324 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:00,607 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:00,871 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:01,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:01,840 INFO L93 Difference]: Finished difference Result 2141 states and 2612 transitions. [2020-08-19 02:35:01,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-19 02:35:01,841 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 152 [2020-08-19 02:35:01,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:01,849 INFO L225 Difference]: With dead ends: 2141 [2020-08-19 02:35:01,849 INFO L226 Difference]: Without dead ends: 1042 [2020-08-19 02:35:01,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=561, Invalid=2519, Unknown=0, NotChecked=0, Total=3080 [2020-08-19 02:35:01,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-08-19 02:35:02,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 906. [2020-08-19 02:35:02,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 906 states. [2020-08-19 02:35:02,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1027 transitions. [2020-08-19 02:35:02,098 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1027 transitions. Word has length 152 [2020-08-19 02:35:02,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:02,101 INFO L479 AbstractCegarLoop]: Abstraction has 906 states and 1027 transitions. [2020-08-19 02:35:02,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 02:35:02,101 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1027 transitions. [2020-08-19 02:35:02,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-19 02:35:02,105 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:02,105 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 02:35:02,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 02:35:02,106 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:02,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:02,106 INFO L82 PathProgramCache]: Analyzing trace with hash 906656976, now seen corresponding path program 1 times [2020-08-19 02:35:02,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:02,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142188081] [2020-08-19 02:35:02,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:02,449 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:02,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:02,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:02,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:02,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:02,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:02,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:35:02,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:02,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:35:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:02,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:35:02,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:02,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 02:35:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:02,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:02,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:02,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:02,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:02,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:02,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:35:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:02,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:35:02,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:02,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:02,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 02:35:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:02,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-19 02:35:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:02,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:02,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:02,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:02,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:35:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:02,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-19 02:35:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:02,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 02:35:02,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:02,704 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-19 02:35:02,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142188081] [2020-08-19 02:35:02,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:35:02,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 02:35:02,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81349724] [2020-08-19 02:35:02,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 02:35:02,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:02,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 02:35:02,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-19 02:35:02,706 INFO L87 Difference]: Start difference. First operand 906 states and 1027 transitions. Second operand 13 states. [2020-08-19 02:35:03,629 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:03,886 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:35:04,152 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:35:05,186 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:06,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:06,571 INFO L93 Difference]: Finished difference Result 1616 states and 1930 transitions. [2020-08-19 02:35:06,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-19 02:35:06,572 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-19 02:35:06,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:06,573 INFO L225 Difference]: With dead ends: 1616 [2020-08-19 02:35:06,573 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 02:35:06,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2020-08-19 02:35:06,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 02:35:06,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 02:35:06,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 02:35:06,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 02:35:06,579 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 152 [2020-08-19 02:35:06,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:06,579 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 02:35:06,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 02:35:06,579 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 02:35:06,579 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 02:35:06,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 02:35:06,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 02:35:07,114 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 26 [2020-08-19 02:35:07,262 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 24 [2020-08-19 02:35:07,433 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 25 [2020-08-19 02:35:07,602 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 26 [2020-08-19 02:35:07,779 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 25 [2020-08-19 02:35:07,971 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 25 [2020-08-19 02:35:08,085 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 25 [2020-08-19 02:35:08,244 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 25 [2020-08-19 02:35:10,163 WARN L193 SmtUtils]: Spent 926.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 293 [2020-08-19 02:35:10,786 WARN L193 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 293 [2020-08-19 02:35:11,915 WARN L193 SmtUtils]: Spent 840.00 ms on a formula simplification. DAG size of input: 358 DAG size of output: 308