/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 00:30:33,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:30:33,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:30:33,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 00:30:33,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 00:30:33,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 00:30:33,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 00:30:33,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 00:30:33,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 00:30:33,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 00:30:33,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 00:30:33,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 00:30:33,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:30:33,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:30:33,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:30:33,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:30:33,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:30:33,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:30:33,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:30:33,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:30:33,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:30:33,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:30:33,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:30:33,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:30:33,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 00:30:33,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 00:30:33,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 00:30:33,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 00:30:33,297 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 00:30:33,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 00:30:33,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 00:30:33,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 00:30:33,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 00:30:33,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 00:30:33,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 00:30:33,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 00:30:33,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 00:30:33,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 00:30:33,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:30:33,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:30:33,304 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:30:33,305 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 [2020-08-22 00:30:33,328 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:30:33,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:30:33,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:30:33,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:30:33,330 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:30:33,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:30:33,330 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:30:33,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:30:33,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:30:33,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:30:33,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:30:33,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:30:33,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:30:33,332 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:30:33,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:30:33,332 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:30:33,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:30:33,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:30:33,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:30:33,333 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:30:33,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:30:33,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:30:33,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:30:33,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:30:33,334 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:30:33,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:30:33,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:30:33,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:30:33,335 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:30:33,337 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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-08-22 00:30:33,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:30:33,693 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:30:33,697 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:30:33,698 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:30:33,701 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:30:33,702 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c [2020-08-22 00:30:33,767 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9abbbab78/3fc8f7296c3f48f3aaf286423bd2b58f/FLAG1a41acb6e [2020-08-22 00:30:34,349 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:30:34,349 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c [2020-08-22 00:30:34,364 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9abbbab78/3fc8f7296c3f48f3aaf286423bd2b58f/FLAG1a41acb6e [2020-08-22 00:30:34,725 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9abbbab78/3fc8f7296c3f48f3aaf286423bd2b58f [2020-08-22 00:30:34,734 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:30:34,736 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:30:34,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:30:34,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:30:34,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:30:34,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:30:34" (1/1) ... [2020-08-22 00:30:34,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ca632cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:30:34, skipping insertion in model container [2020-08-22 00:30:34,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:30:34" (1/1) ... [2020-08-22 00:30:34,754 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:30:34,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:30:35,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:30:35,270 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:30:35,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:30:35,407 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:30:35,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:30:35 WrapperNode [2020-08-22 00:30:35,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:30:35,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:30:35,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:30:35,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:30:35,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:30:35" (1/1) ... [2020-08-22 00:30:35,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:30:35" (1/1) ... [2020-08-22 00:30:35,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:30:35" (1/1) ... [2020-08-22 00:30:35,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:30:35" (1/1) ... [2020-08-22 00:30:35,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:30:35" (1/1) ... [2020-08-22 00:30:35,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:30:35" (1/1) ... [2020-08-22 00:30:35,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:30:35" (1/1) ... [2020-08-22 00:30:35,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:30:35,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:30:35,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:30:35,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:30:35,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:30:35" (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 [2020-08-22 00:30:35,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:30:35,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:30:35,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 00:30:35,566 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 00:30:35,567 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 00:30:35,567 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 00:30:35,567 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 00:30:35,567 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 00:30:35,567 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 00:30:35,567 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 00:30:35,568 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 00:30:35,568 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 00:30:35,568 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 00:30:35,568 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 00:30:35,568 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 00:30:35,568 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 00:30:35,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 00:30:35,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 00:30:35,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 00:30:35,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 00:30:35,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 00:30:35,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 00:30:35,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-22 00:30:35,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-22 00:30:35,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-22 00:30:35,570 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 00:30:35,571 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 00:30:35,571 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 00:30:35,571 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 00:30:35,571 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:30:35,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 00:30:35,571 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 00:30:35,572 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 00:30:35,572 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 00:30:35,572 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 00:30:35,572 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 00:30:35,572 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 00:30:35,573 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 00:30:35,573 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 00:30:35,573 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 00:30:35,573 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 00:30:35,573 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 00:30:35,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:30:35,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 00:30:35,574 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 00:30:35,574 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 00:30:35,574 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 00:30:35,574 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 00:30:35,574 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 00:30:35,575 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 00:30:35,575 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 00:30:35,575 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 00:30:35,575 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 00:30:35,575 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 00:30:35,575 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 00:30:35,576 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 00:30:35,576 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-22 00:30:35,576 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-22 00:30:35,576 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 00:30:35,576 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 00:30:35,576 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 00:30:35,576 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 00:30:35,577 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 00:30:35,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 00:30:35,577 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 00:30:35,577 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 00:30:35,577 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 00:30:35,577 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 00:30:35,578 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 00:30:35,578 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 00:30:35,578 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 00:30:35,578 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 00:30:35,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 00:30:35,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 00:30:35,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 00:30:35,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 00:30:35,579 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 00:30:35,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 00:30:35,579 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 00:30:35,579 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 00:30:35,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 00:30:35,580 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 00:30:35,580 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 00:30:35,580 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 00:30:35,580 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 00:30:35,580 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 00:30:35,580 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-22 00:30:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 00:30:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 00:30:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 00:30:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 00:30:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 00:30:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 00:30:35,582 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:30:35,582 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 00:30:35,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:30:35,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 00:30:35,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:30:36,590 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:30:36,590 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 00:30:36,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:30:36 BoogieIcfgContainer [2020-08-22 00:30:36,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:30:36,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:30:36,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:30:36,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:30:36,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:30:34" (1/3) ... [2020-08-22 00:30:36,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f42c056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:30:36, skipping insertion in model container [2020-08-22 00:30:36,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:30:35" (2/3) ... [2020-08-22 00:30:36,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f42c056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:30:36, skipping insertion in model container [2020-08-22 00:30:36,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:30:36" (3/3) ... [2020-08-22 00:30:36,605 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product40.cil.c [2020-08-22 00:30:36,617 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:30:36,625 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 00:30:36,639 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 00:30:36,666 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:30:36,666 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:30:36,666 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:30:36,666 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:30:36,667 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:30:36,667 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:30:36,667 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:30:36,667 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:30:36,691 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2020-08-22 00:30:36,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 00:30:36,702 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:30:36,703 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:30:36,704 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:30:36,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:30:36,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1231866733, now seen corresponding path program 1 times [2020-08-22 00:30:36,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:30:36,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154183335] [2020-08-22 00:30:36,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:30:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:37,517 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:30:37,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:37,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:30:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:37,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:30:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:37,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:30:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:37,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:30:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:37,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:30:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:37,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:30:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:37,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:37,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 00:30:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:37,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 00:30:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:37,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 00:30:37,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154183335] [2020-08-22 00:30:37,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:30:37,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:30:37,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143699269] [2020-08-22 00:30:37,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:30:37,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:30:37,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:30:37,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:30:37,797 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 4 states. [2020-08-22 00:30:39,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:30:39,003 INFO L93 Difference]: Finished difference Result 324 states and 416 transitions. [2020-08-22 00:30:39,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 00:30:39,006 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-22 00:30:39,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:30:39,022 INFO L225 Difference]: With dead ends: 324 [2020-08-22 00:30:39,022 INFO L226 Difference]: Without dead ends: 179 [2020-08-22 00:30:39,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:30:39,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-22 00:30:39,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 146. [2020-08-22 00:30:39,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-22 00:30:39,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 171 transitions. [2020-08-22 00:30:39,125 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 171 transitions. Word has length 59 [2020-08-22 00:30:39,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:30:39,126 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 171 transitions. [2020-08-22 00:30:39,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:30:39,127 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 171 transitions. [2020-08-22 00:30:39,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 00:30:39,131 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:30:39,131 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:30:39,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:30:39,131 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:30:39,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:30:39,132 INFO L82 PathProgramCache]: Analyzing trace with hash 735941424, now seen corresponding path program 1 times [2020-08-22 00:30:39,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:30:39,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3257082] [2020-08-22 00:30:39,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:30:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:39,503 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:30:39,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:39,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:30:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:39,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:30:39,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:39,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:30:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:39,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:30:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:39,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:30:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:39,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:30:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:39,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:39,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 00:30:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:39,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 00:30:39,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:39,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 00:30:39,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3257082] [2020-08-22 00:30:39,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:30:39,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 00:30:39,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641207850] [2020-08-22 00:30:39,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 00:30:39,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:30:39,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 00:30:39,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:30:39,562 INFO L87 Difference]: Start difference. First operand 146 states and 171 transitions. Second operand 5 states. [2020-08-22 00:30:40,020 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:30:40,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:30:40,956 INFO L93 Difference]: Finished difference Result 259 states and 316 transitions. [2020-08-22 00:30:40,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 00:30:40,957 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-22 00:30:40,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:30:40,961 INFO L225 Difference]: With dead ends: 259 [2020-08-22 00:30:40,962 INFO L226 Difference]: Without dead ends: 169 [2020-08-22 00:30:40,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 00:30:40,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-22 00:30:41,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 137. [2020-08-22 00:30:41,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-08-22 00:30:41,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 159 transitions. [2020-08-22 00:30:41,005 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 159 transitions. Word has length 60 [2020-08-22 00:30:41,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:30:41,006 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 159 transitions. [2020-08-22 00:30:41,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 00:30:41,006 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 159 transitions. [2020-08-22 00:30:41,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-22 00:30:41,008 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:30:41,008 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:30:41,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:30:41,009 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:30:41,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:30:41,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1019781836, now seen corresponding path program 1 times [2020-08-22 00:30:41,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:30:41,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844325187] [2020-08-22 00:30:41,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:30:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:41,404 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:30:41,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:41,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:30:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:41,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:30:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:41,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:30:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:41,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:30:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:41,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:30:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:41,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 00:30:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:41,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:41,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 00:30:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:41,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 00:30:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:41,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 00:30:41,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844325187] [2020-08-22 00:30:41,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:30:41,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 00:30:41,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039853915] [2020-08-22 00:30:41,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 00:30:41,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:30:41,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 00:30:41,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 00:30:41,578 INFO L87 Difference]: Start difference. First operand 137 states and 159 transitions. Second operand 9 states. [2020-08-22 00:30:41,925 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:30:42,267 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:30:42,511 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:30:42,745 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:30:43,645 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:30:45,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:30:45,414 INFO L93 Difference]: Finished difference Result 460 states and 568 transitions. [2020-08-22 00:30:45,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 00:30:45,417 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-22 00:30:45,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:30:45,426 INFO L225 Difference]: With dead ends: 460 [2020-08-22 00:30:45,426 INFO L226 Difference]: Without dead ends: 351 [2020-08-22 00:30:45,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-22 00:30:45,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-08-22 00:30:45,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 290. [2020-08-22 00:30:45,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-08-22 00:30:45,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 350 transitions. [2020-08-22 00:30:45,511 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 350 transitions. Word has length 65 [2020-08-22 00:30:45,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:30:45,511 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 350 transitions. [2020-08-22 00:30:45,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 00:30:45,512 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 350 transitions. [2020-08-22 00:30:45,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 00:30:45,514 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:30:45,514 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:30:45,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 00:30:45,515 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:30:45,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:30:45,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1071873071, now seen corresponding path program 1 times [2020-08-22 00:30:45,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:30:45,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391021289] [2020-08-22 00:30:45,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:30:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:45,841 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:30:45,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:45,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:30:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:45,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:30:45,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:45,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:30:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:45,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:30:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:45,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:30:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:45,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:30:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:45,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 00:30:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:45,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:45,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 00:30:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:45,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 00:30:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:45,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 00:30:45,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391021289] [2020-08-22 00:30:45,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:30:45,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 00:30:45,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328481462] [2020-08-22 00:30:45,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 00:30:45,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:30:45,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 00:30:45,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 00:30:45,958 INFO L87 Difference]: Start difference. First operand 290 states and 350 transitions. Second operand 9 states. [2020-08-22 00:30:46,326 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:30:47,073 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:30:47,892 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:30:48,225 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:30:48,512 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:30:48,816 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:30:49,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:30:49,596 INFO L93 Difference]: Finished difference Result 747 states and 974 transitions. [2020-08-22 00:30:49,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 00:30:49,597 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-22 00:30:49,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:30:49,604 INFO L225 Difference]: With dead ends: 747 [2020-08-22 00:30:49,604 INFO L226 Difference]: Without dead ends: 485 [2020-08-22 00:30:49,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 00:30:49,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-08-22 00:30:49,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 417. [2020-08-22 00:30:49,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-08-22 00:30:49,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 501 transitions. [2020-08-22 00:30:49,703 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 501 transitions. Word has length 70 [2020-08-22 00:30:49,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:30:49,703 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 501 transitions. [2020-08-22 00:30:49,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 00:30:49,704 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 501 transitions. [2020-08-22 00:30:49,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 00:30:49,706 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:30:49,706 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:30:49,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 00:30:49,707 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:30:49,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:30:49,707 INFO L82 PathProgramCache]: Analyzing trace with hash -573764694, now seen corresponding path program 1 times [2020-08-22 00:30:49,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:30:49,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864627271] [2020-08-22 00:30:49,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:30:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:50,012 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:30:50,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:50,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:30:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:50,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:30:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:50,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:30:50,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:50,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:30:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:50,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:30:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:50,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 00:30:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:50,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:50,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 00:30:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:50,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:30:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:50,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:30:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:50,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:30:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:50,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:30:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:50,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 00:30:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:50,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 00:30:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:50,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 00:30:50,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864627271] [2020-08-22 00:30:50,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:30:50,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 00:30:50,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051293998] [2020-08-22 00:30:50,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 00:30:50,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:30:50,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 00:30:50,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 00:30:50,203 INFO L87 Difference]: Start difference. First operand 417 states and 501 transitions. Second operand 9 states. [2020-08-22 00:30:50,645 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:30:51,794 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:30:52,078 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 00:30:52,336 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:30:52,617 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:30:53,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:30:53,890 INFO L93 Difference]: Finished difference Result 1260 states and 1685 transitions. [2020-08-22 00:30:53,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 00:30:53,891 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-22 00:30:53,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:30:53,898 INFO L225 Difference]: With dead ends: 1260 [2020-08-22 00:30:53,898 INFO L226 Difference]: Without dead ends: 871 [2020-08-22 00:30:53,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-22 00:30:53,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2020-08-22 00:30:54,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 743. [2020-08-22 00:30:54,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-22 00:30:54,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 897 transitions. [2020-08-22 00:30:54,059 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 897 transitions. Word has length 93 [2020-08-22 00:30:54,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:30:54,060 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 897 transitions. [2020-08-22 00:30:54,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 00:30:54,060 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 897 transitions. [2020-08-22 00:30:54,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 00:30:54,063 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:30:54,063 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:30:54,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 00:30:54,064 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:30:54,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:30:54,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1995721705, now seen corresponding path program 1 times [2020-08-22 00:30:54,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:30:54,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136164455] [2020-08-22 00:30:54,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:30:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:54,311 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:30:54,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:54,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:30:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:54,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:30:54,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:54,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:30:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:54,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:30:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:54,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:30:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:54,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 00:30:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:54,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:54,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 00:30:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:54,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:30:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:54,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:30:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:54,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:30:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:54,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:30:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:54,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 00:30:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:54,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 00:30:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:54,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 00:30:54,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136164455] [2020-08-22 00:30:54,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:30:54,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 00:30:54,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888225750] [2020-08-22 00:30:54,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 00:30:54,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:30:54,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 00:30:54,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 00:30:54,445 INFO L87 Difference]: Start difference. First operand 743 states and 897 transitions. Second operand 9 states. [2020-08-22 00:30:55,573 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:30:55,807 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 00:30:56,080 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:30:56,332 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:30:57,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:30:57,198 INFO L93 Difference]: Finished difference Result 1585 states and 2019 transitions. [2020-08-22 00:30:57,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 00:30:57,199 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-22 00:30:57,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:30:57,207 INFO L225 Difference]: With dead ends: 1585 [2020-08-22 00:30:57,207 INFO L226 Difference]: Without dead ends: 870 [2020-08-22 00:30:57,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 00:30:57,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2020-08-22 00:30:57,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 763. [2020-08-22 00:30:57,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 763 states. [2020-08-22 00:30:57,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 917 transitions. [2020-08-22 00:30:57,351 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 917 transitions. Word has length 93 [2020-08-22 00:30:57,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:30:57,352 INFO L479 AbstractCegarLoop]: Abstraction has 763 states and 917 transitions. [2020-08-22 00:30:57,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 00:30:57,353 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 917 transitions. [2020-08-22 00:30:57,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 00:30:57,358 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:30:57,358 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:30:57,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 00:30:57,361 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:30:57,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:30:57,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1597645717, now seen corresponding path program 1 times [2020-08-22 00:30:57,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:30:57,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077955175] [2020-08-22 00:30:57,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:30:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:57,650 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:30:57,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:57,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:30:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:57,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:30:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:57,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:30:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:57,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:30:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:57,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:30:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:57,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 00:30:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:57,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:57,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 00:30:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:57,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:30:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:57,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:30:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:57,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:30:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:57,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:30:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:57,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 00:30:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:57,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 00:30:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:57,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 00:30:57,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077955175] [2020-08-22 00:30:57,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:30:57,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 00:30:57,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300099599] [2020-08-22 00:30:57,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 00:30:57,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:30:57,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 00:30:57,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 00:30:57,824 INFO L87 Difference]: Start difference. First operand 763 states and 917 transitions. Second operand 11 states. [2020-08-22 00:30:58,364 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:30:58,610 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:30:58,842 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:30:59,674 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:30:59,935 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:31:00,174 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:31:01,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:31:01,176 INFO L93 Difference]: Finished difference Result 1442 states and 1826 transitions. [2020-08-22 00:31:01,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 00:31:01,177 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-22 00:31:01,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:31:01,182 INFO L225 Difference]: With dead ends: 1442 [2020-08-22 00:31:01,182 INFO L226 Difference]: Without dead ends: 707 [2020-08-22 00:31:01,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 00:31:01,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-08-22 00:31:01,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 630. [2020-08-22 00:31:01,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2020-08-22 00:31:01,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 739 transitions. [2020-08-22 00:31:01,307 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 739 transitions. Word has length 93 [2020-08-22 00:31:01,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:31:01,307 INFO L479 AbstractCegarLoop]: Abstraction has 630 states and 739 transitions. [2020-08-22 00:31:01,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 00:31:01,307 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 739 transitions. [2020-08-22 00:31:01,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-22 00:31:01,309 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:31:01,309 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:31:01,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 00:31:01,310 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:31:01,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:31:01,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1394866514, now seen corresponding path program 1 times [2020-08-22 00:31:01,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:31:01,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113663007] [2020-08-22 00:31:01,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:31:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:01,672 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:31:01,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:01,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:31:01,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:01,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:31:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:01,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:31:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:01,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:31:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:01,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:31:01,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:01,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:31:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:01,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 00:31:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:01,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:01,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:01,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 00:31:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:01,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:01,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:01,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:01,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:31:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:01,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-22 00:31:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:01,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 00:31:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:01,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 00:31:01,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113663007] [2020-08-22 00:31:01,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:31:01,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 00:31:01,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046957530] [2020-08-22 00:31:01,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 00:31:01,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:31:01,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 00:31:01,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:31:01,866 INFO L87 Difference]: Start difference. First operand 630 states and 739 transitions. Second operand 12 states. [2020-08-22 00:31:02,339 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:31:02,982 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:31:03,701 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:31:04,012 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:31:04,254 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 00:31:04,553 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:31:04,823 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:31:06,699 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:31:06,999 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:31:07,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:31:07,455 INFO L93 Difference]: Finished difference Result 1853 states and 2361 transitions. [2020-08-22 00:31:07,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 00:31:07,456 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-08-22 00:31:07,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:31:07,466 INFO L225 Difference]: With dead ends: 1853 [2020-08-22 00:31:07,466 INFO L226 Difference]: Without dead ends: 1437 [2020-08-22 00:31:07,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-22 00:31:07,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2020-08-22 00:31:07,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1299. [2020-08-22 00:31:07,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1299 states. [2020-08-22 00:31:07,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1525 transitions. [2020-08-22 00:31:07,681 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1525 transitions. Word has length 97 [2020-08-22 00:31:07,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:31:07,682 INFO L479 AbstractCegarLoop]: Abstraction has 1299 states and 1525 transitions. [2020-08-22 00:31:07,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 00:31:07,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1525 transitions. [2020-08-22 00:31:07,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-22 00:31:07,685 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:31:07,686 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:31:07,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 00:31:07,686 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:31:07,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:31:07,687 INFO L82 PathProgramCache]: Analyzing trace with hash 773750625, now seen corresponding path program 1 times [2020-08-22 00:31:07,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:31:07,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436087062] [2020-08-22 00:31:07,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:31:07,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:08,047 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:31:08,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:08,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:31:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:08,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:31:08,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:08,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:31:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:08,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:31:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:08,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:31:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:08,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:31:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:08,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 00:31:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:08,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:08,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:08,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:08,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 00:31:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:08,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:08,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:08,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:08,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:31:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:08,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 00:31:08,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:08,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:08,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-22 00:31:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:08,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:08,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 00:31:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:08,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 00:31:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:08,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:08,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:08,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 00:31:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:08,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:08,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 00:31:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:08,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-22 00:31:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:08,501 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 00:31:08,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436087062] [2020-08-22 00:31:08,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:31:08,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 00:31:08,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017429092] [2020-08-22 00:31:08,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 00:31:08,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:31:08,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 00:31:08,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-22 00:31:08,505 INFO L87 Difference]: Start difference. First operand 1299 states and 1525 transitions. Second operand 16 states. [2020-08-22 00:31:09,135 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 00:31:09,484 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-22 00:31:09,771 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 00:31:10,057 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 00:31:10,796 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-08-22 00:31:11,156 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-22 00:31:11,472 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 00:31:11,857 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 00:31:12,197 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-22 00:31:13,399 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:31:14,396 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-22 00:31:14,960 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-22 00:31:15,283 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 00:31:15,907 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:31:16,322 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-22 00:31:16,915 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-08-22 00:31:17,510 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-08-22 00:31:18,083 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 00:31:18,652 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-22 00:31:19,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:31:19,462 INFO L93 Difference]: Finished difference Result 2875 states and 3500 transitions. [2020-08-22 00:31:19,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-08-22 00:31:19,463 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2020-08-22 00:31:19,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:31:19,475 INFO L225 Difference]: With dead ends: 2875 [2020-08-22 00:31:19,475 INFO L226 Difference]: Without dead ends: 1784 [2020-08-22 00:31:19,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=751, Invalid=3031, Unknown=0, NotChecked=0, Total=3782 [2020-08-22 00:31:19,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2020-08-22 00:31:19,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1573. [2020-08-22 00:31:19,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-08-22 00:31:19,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 1829 transitions. [2020-08-22 00:31:19,815 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 1829 transitions. Word has length 157 [2020-08-22 00:31:19,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:31:19,816 INFO L479 AbstractCegarLoop]: Abstraction has 1573 states and 1829 transitions. [2020-08-22 00:31:19,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 00:31:19,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 1829 transitions. [2020-08-22 00:31:19,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-08-22 00:31:19,828 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:31:19,828 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:31:19,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 00:31:19,829 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:31:19,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:31:19,829 INFO L82 PathProgramCache]: Analyzing trace with hash -2117575381, now seen corresponding path program 1 times [2020-08-22 00:31:19,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:31:19,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641228849] [2020-08-22 00:31:19,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:31:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,243 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:31:20,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:31:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:31:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:31:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:31:20,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:31:20,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:31:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 00:31:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:20,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 00:31:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:31:20,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 00:31:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 00:31:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:31:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 00:31:20,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:20,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 00:31:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 00:31:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-22 00:31:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:20,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:31:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 00:31:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 00:31:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 00:31:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:20,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-08-22 00:31:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-22 00:31:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:31:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-22 00:31:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-22 00:31:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:20,842 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 81 proven. 31 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-08-22 00:31:20,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641228849] [2020-08-22 00:31:20,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:31:20,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 00:31:20,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815170894] [2020-08-22 00:31:20,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 00:31:20,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:31:20,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 00:31:20,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-22 00:31:20,851 INFO L87 Difference]: Start difference. First operand 1573 states and 1829 transitions. Second operand 15 states. [2020-08-22 00:31:22,509 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:31:22,789 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 00:31:23,018 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:31:23,279 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 00:31:23,523 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:31:24,513 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 00:31:25,038 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-22 00:31:25,493 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-22 00:31:25,869 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:31:28,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:31:28,359 INFO L93 Difference]: Finished difference Result 4467 states and 5409 transitions. [2020-08-22 00:31:28,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 00:31:28,362 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 273 [2020-08-22 00:31:28,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:31:28,376 INFO L225 Difference]: With dead ends: 4467 [2020-08-22 00:31:28,376 INFO L226 Difference]: Without dead ends: 2691 [2020-08-22 00:31:28,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-22 00:31:28,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2020-08-22 00:31:28,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 2317. [2020-08-22 00:31:28,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2317 states. [2020-08-22 00:31:28,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 2705 transitions. [2020-08-22 00:31:28,799 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 2705 transitions. Word has length 273 [2020-08-22 00:31:28,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:31:28,799 INFO L479 AbstractCegarLoop]: Abstraction has 2317 states and 2705 transitions. [2020-08-22 00:31:28,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 00:31:28,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 2705 transitions. [2020-08-22 00:31:28,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-08-22 00:31:28,809 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:31:28,810 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:31:28,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 00:31:28,810 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:31:28,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:31:28,811 INFO L82 PathProgramCache]: Analyzing trace with hash 856417488, now seen corresponding path program 1 times [2020-08-22 00:31:28,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:31:28,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99692465] [2020-08-22 00:31:28,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:31:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,133 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:31:29,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:31:29,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:31:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:31:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:31:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:31:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:31:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 00:31:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 00:31:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:31:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 00:31:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 00:31:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:31:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 00:31:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:29,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 00:31:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 00:31:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 00:31:29,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 00:31:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:31:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 00:31:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 00:31:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 00:31:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-08-22 00:31:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-08-22 00:31:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:31:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-22 00:31:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-08-22 00:31:29,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:29,532 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 90 proven. 36 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-08-22 00:31:29,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99692465] [2020-08-22 00:31:29,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:31:29,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 00:31:29,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477131718] [2020-08-22 00:31:29,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 00:31:29,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:31:29,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 00:31:29,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-22 00:31:29,536 INFO L87 Difference]: Start difference. First operand 2317 states and 2705 transitions. Second operand 16 states. [2020-08-22 00:31:30,055 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:31:30,413 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 00:31:30,659 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 00:31:30,900 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 00:31:31,602 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191