/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 21:38:45,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:38:45,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:38:45,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:38:45,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:38:45,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:38:45,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:38:45,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:38:45,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:38:45,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:38:45,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:38:45,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:38:45,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:38:45,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:38:45,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:38:45,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:38:45,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:38:45,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:38:45,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:38:45,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:38:45,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:38:45,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:38:45,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:38:45,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:38:45,299 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 21:38:45,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 21:38:45,299 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 21:38:45,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 21:38:45,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 21:38:45,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 21:38:45,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 21:38:45,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 21:38:45,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 21:38:45,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 21:38:45,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 21:38:45,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 21:38:45,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 21:38:45,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 21:38:45,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:38:45,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:38:45,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:38:45,310 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 [2020-08-27 21:38:45,337 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:38:45,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:38:45,341 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:38:45,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:38:45,341 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:38:45,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:38:45,342 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:38:45,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:38:45,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:38:45,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:38:45,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:38:45,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:38:45,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:38:45,346 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:38:45,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:38:45,346 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:38:45,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:38:45,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:38:45,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:38:45,347 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:38:45,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:38:45,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:38:45,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:38:45,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:38:45,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:38:45,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:38:45,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:38:45,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:38:45,349 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:38:45,349 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-27 21:38:45,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:38:45,863 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:38:45,868 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:38:45,870 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:38:45,870 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:38:45,872 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2020-08-27 21:38:45,963 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee34541a5/be83e8a038df41bb92ff294cbaa5143d/FLAG5dd364286 [2020-08-27 21:38:46,578 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:38:46,579 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2020-08-27 21:38:46,596 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee34541a5/be83e8a038df41bb92ff294cbaa5143d/FLAG5dd364286 [2020-08-27 21:38:46,813 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee34541a5/be83e8a038df41bb92ff294cbaa5143d [2020-08-27 21:38:46,826 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:38:46,828 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:38:46,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:38:46,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:38:46,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:38:46,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:38:46" (1/1) ... [2020-08-27 21:38:46,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:46, skipping insertion in model container [2020-08-27 21:38:46,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:38:46" (1/1) ... [2020-08-27 21:38:46,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:38:46,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:38:47,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:38:47,354 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:38:47,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:38:47,553 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:38:47,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:47 WrapperNode [2020-08-27 21:38:47,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:38:47,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:38:47,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:38:47,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:38:47,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:47" (1/1) ... [2020-08-27 21:38:47,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:47" (1/1) ... [2020-08-27 21:38:47,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:47" (1/1) ... [2020-08-27 21:38:47,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:47" (1/1) ... [2020-08-27 21:38:47,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:47" (1/1) ... [2020-08-27 21:38:47,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:47" (1/1) ... [2020-08-27 21:38:47,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:47" (1/1) ... [2020-08-27 21:38:47,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:38:47,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:38:47,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:38:47,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:38:47,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:47" (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 [2020-08-27 21:38:47,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:38:47,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:38:47,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-27 21:38:47,747 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-27 21:38:47,747 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-27 21:38:47,748 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-27 21:38:47,749 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-27 21:38:47,749 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:38:47,749 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-27 21:38:47,749 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-27 21:38:47,749 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-27 21:38:47,750 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-27 21:38:47,751 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-27 21:38:47,751 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-27 21:38:47,751 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-27 21:38:47,752 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-27 21:38:47,752 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-27 21:38:47,752 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-27 21:38:47,752 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-27 21:38:47,753 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-27 21:38:47,753 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-27 21:38:47,753 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-27 21:38:47,753 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-27 21:38:47,753 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-27 21:38:47,754 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-27 21:38:47,754 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-27 21:38:47,755 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-27 21:38:47,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-27 21:38:47,755 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-27 21:38:47,755 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-27 21:38:47,755 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-27 21:38:47,756 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-27 21:38:47,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-27 21:38:47,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-27 21:38:47,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-27 21:38:47,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-27 21:38:47,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-27 21:38:47,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-27 21:38:47,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-27 21:38:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:38:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-27 21:38:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-27 21:38:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-27 21:38:47,758 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-27 21:38:47,758 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-27 21:38:47,758 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-27 21:38:47,758 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-27 21:38:47,758 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-27 21:38:47,758 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-27 21:38:47,758 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-27 21:38:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-27 21:38:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-27 21:38:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-27 21:38:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-27 21:38:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:38:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-27 21:38:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-27 21:38:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-27 21:38:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-27 21:38:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-27 21:38:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-27 21:38:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-27 21:38:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-27 21:38:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-27 21:38:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-27 21:38:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-27 21:38:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-27 21:38:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-27 21:38:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-27 21:38:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-27 21:38:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-27 21:38:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-27 21:38:47,763 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-27 21:38:47,763 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-27 21:38:47,764 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-27 21:38:47,764 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-27 21:38:47,764 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-27 21:38:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-27 21:38:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-27 21:38:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-27 21:38:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-27 21:38:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-27 21:38:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 21:38:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-27 21:38:47,767 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-27 21:38:47,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-27 21:38:47,767 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-27 21:38:47,768 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-27 21:38:47,768 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-27 21:38:47,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:38:47,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-27 21:38:47,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:38:48,893 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:38:48,894 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-27 21:38:48,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:38:48 BoogieIcfgContainer [2020-08-27 21:38:48,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:38:48,901 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:38:48,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:38:48,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:38:48,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:38:46" (1/3) ... [2020-08-27 21:38:48,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de5a1f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:38:48, skipping insertion in model container [2020-08-27 21:38:48,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:47" (2/3) ... [2020-08-27 21:38:48,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de5a1f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:38:48, skipping insertion in model container [2020-08-27 21:38:48,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:38:48" (3/3) ... [2020-08-27 21:38:48,909 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product42.cil.c [2020-08-27 21:38:48,920 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:38:48,930 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 21:38:48,951 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 21:38:48,977 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:38:48,977 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:38:48,977 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:38:48,977 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:38:48,977 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:38:48,977 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:38:48,977 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:38:48,977 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:38:49,003 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-08-27 21:38:49,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-27 21:38:49,015 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:38:49,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:38:49,017 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:38:49,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:38:49,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1349332709, now seen corresponding path program 1 times [2020-08-27 21:38:49,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:38:49,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181327834] [2020-08-27 21:38:49,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:38:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:49,735 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:38:49,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:38:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:49,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:38:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:49,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:38:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:49,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:38:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:49,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:38:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:49,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:38:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:49,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:38:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:49,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-27 21:38:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:49,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:38:49,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181327834] [2020-08-27 21:38:49,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:38:49,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-27 21:38:49,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592287737] [2020-08-27 21:38:49,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-27 21:38:49,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:38:49,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-27 21:38:49,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-27 21:38:49,930 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2020-08-27 21:38:51,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:38:51,014 INFO L93 Difference]: Finished difference Result 296 states and 385 transitions. [2020-08-27 21:38:51,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-27 21:38:51,017 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-27 21:38:51,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:38:51,034 INFO L225 Difference]: With dead ends: 296 [2020-08-27 21:38:51,035 INFO L226 Difference]: Without dead ends: 160 [2020-08-27 21:38:51,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-27 21:38:51,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-27 21:38:51,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 127. [2020-08-27 21:38:51,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-27 21:38:51,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2020-08-27 21:38:51,142 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 52 [2020-08-27 21:38:51,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:38:51,142 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2020-08-27 21:38:51,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-27 21:38:51,143 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2020-08-27 21:38:51,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-27 21:38:51,147 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:38:51,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:38:51,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:38:51,148 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:38:51,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:38:51,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1093164693, now seen corresponding path program 1 times [2020-08-27 21:38:51,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:38:51,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964465762] [2020-08-27 21:38:51,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:38:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:51,504 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:38:51,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:38:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:51,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:38:51,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:51,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:38:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:51,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:38:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:51,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:38:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:51,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-27 21:38:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:51,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-27 21:38:51,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:51,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-27 21:38:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:51,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:38:51,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964465762] [2020-08-27 21:38:51,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:38:51,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 21:38:51,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898022244] [2020-08-27 21:38:51,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 21:38:51,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:38:51,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 21:38:51,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:38:51,566 INFO L87 Difference]: Start difference. First operand 127 states and 148 transitions. Second operand 4 states. [2020-08-27 21:38:51,994 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:38:52,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:38:52,777 INFO L93 Difference]: Finished difference Result 225 states and 272 transitions. [2020-08-27 21:38:52,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-27 21:38:52,777 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-27 21:38:52,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:38:52,780 INFO L225 Difference]: With dead ends: 225 [2020-08-27 21:38:52,780 INFO L226 Difference]: Without dead ends: 144 [2020-08-27 21:38:52,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-27 21:38:52,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-27 21:38:52,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-27 21:38:52,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-27 21:38:52,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2020-08-27 21:38:52,824 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 53 [2020-08-27 21:38:52,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:38:52,824 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2020-08-27 21:38:52,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 21:38:52,825 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2020-08-27 21:38:52,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-27 21:38:52,827 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:38:52,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:38:52,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:38:52,828 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:38:52,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:38:52,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1756790423, now seen corresponding path program 1 times [2020-08-27 21:38:52,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:38:52,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239380571] [2020-08-27 21:38:52,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:38:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:53,201 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:38:53,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:38:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:53,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:38:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:53,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:38:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:53,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:38:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:53,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:38:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:53,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:38:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:53,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-27 21:38:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:53,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-27 21:38:53,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:53,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:38:53,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239380571] [2020-08-27 21:38:53,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:38:53,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-27 21:38:53,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884722049] [2020-08-27 21:38:53,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-27 21:38:53,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:38:53,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-27 21:38:53,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-27 21:38:53,311 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand 8 states. [2020-08-27 21:38:53,726 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:38:54,120 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:38:54,406 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:38:54,693 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:38:55,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:38:55,948 INFO L93 Difference]: Finished difference Result 238 states and 290 transitions. [2020-08-27 21:38:55,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-27 21:38:55,949 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-27 21:38:55,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:38:55,952 INFO L225 Difference]: With dead ends: 238 [2020-08-27 21:38:55,952 INFO L226 Difference]: Without dead ends: 144 [2020-08-27 21:38:55,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:38:55,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-27 21:38:55,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-27 21:38:55,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-27 21:38:55,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 135 transitions. [2020-08-27 21:38:55,986 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 135 transitions. Word has length 58 [2020-08-27 21:38:55,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:38:55,987 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 135 transitions. [2020-08-27 21:38:55,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-27 21:38:55,987 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 135 transitions. [2020-08-27 21:38:55,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-27 21:38:55,989 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:38:55,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:38:55,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-27 21:38:55,990 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:38:55,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:38:55,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1312872772, now seen corresponding path program 1 times [2020-08-27 21:38:55,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:38:55,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379333957] [2020-08-27 21:38:55,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:38:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:56,386 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:38:56,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:38:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:56,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:38:56,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:56,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:38:56,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:56,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:38:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:56,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:38:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:56,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-27 21:38:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:56,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:38:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:56,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-27 21:38:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:56,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-27 21:38:56,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:56,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-27 21:38:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:56,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:38:56,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379333957] [2020-08-27 21:38:56,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:38:56,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-27 21:38:56,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362959367] [2020-08-27 21:38:56,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-27 21:38:56,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:38:56,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-27 21:38:56,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-27 21:38:56,526 INFO L87 Difference]: Start difference. First operand 118 states and 135 transitions. Second operand 6 states. [2020-08-27 21:38:56,906 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:38:58,172 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:38:58,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:38:58,895 INFO L93 Difference]: Finished difference Result 338 states and 414 transitions. [2020-08-27 21:38:58,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-27 21:38:58,896 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-08-27 21:38:58,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:38:58,900 INFO L225 Difference]: With dead ends: 338 [2020-08-27 21:38:58,901 INFO L226 Difference]: Without dead ends: 244 [2020-08-27 21:38:58,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-27 21:38:58,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-08-27 21:38:58,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 201. [2020-08-27 21:38:58,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-08-27 21:38:58,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 230 transitions. [2020-08-27 21:38:58,960 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 230 transitions. Word has length 66 [2020-08-27 21:38:58,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:38:58,961 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 230 transitions. [2020-08-27 21:38:58,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-27 21:38:58,961 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 230 transitions. [2020-08-27 21:38:58,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-08-27 21:38:58,963 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:38:58,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:38:58,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-27 21:38:58,964 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:38:58,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:38:58,965 INFO L82 PathProgramCache]: Analyzing trace with hash 362669874, now seen corresponding path program 1 times [2020-08-27 21:38:58,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:38:58,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974589769] [2020-08-27 21:38:58,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:38:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:59,314 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:38:59,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:38:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:59,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:38:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:59,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:38:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:59,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:38:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:59,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:38:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:59,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-27 21:38:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:59,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:38:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:59,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:38:59,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:59,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:38:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:59,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-27 21:38:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:59,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-27 21:38:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:59,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-27 21:38:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:59,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:38:59,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974589769] [2020-08-27 21:38:59,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:38:59,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-27 21:38:59,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847915360] [2020-08-27 21:38:59,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-27 21:38:59,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:38:59,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-27 21:38:59,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-27 21:38:59,423 INFO L87 Difference]: Start difference. First operand 201 states and 230 transitions. Second operand 8 states. [2020-08-27 21:38:59,843 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:01,401 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:01,735 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:02,027 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:02,357 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:03,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:03,065 INFO L93 Difference]: Finished difference Result 555 states and 692 transitions. [2020-08-27 21:39:03,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-27 21:39:03,068 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-08-27 21:39:03,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:03,072 INFO L225 Difference]: With dead ends: 555 [2020-08-27 21:39:03,072 INFO L226 Difference]: Without dead ends: 378 [2020-08-27 21:39:03,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-27 21:39:03,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-08-27 21:39:03,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 335. [2020-08-27 21:39:03,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-08-27 21:39:03,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 389 transitions. [2020-08-27 21:39:03,154 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 389 transitions. Word has length 80 [2020-08-27 21:39:03,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:03,154 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 389 transitions. [2020-08-27 21:39:03,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-27 21:39:03,155 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 389 transitions. [2020-08-27 21:39:03,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-27 21:39:03,157 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:03,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:39:03,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-27 21:39:03,157 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:03,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:03,158 INFO L82 PathProgramCache]: Analyzing trace with hash 871612076, now seen corresponding path program 1 times [2020-08-27 21:39:03,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:03,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344347588] [2020-08-27 21:39:03,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:03,474 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:03,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:03,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:03,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:03,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:03,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:03,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:39:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:03,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-27 21:39:03,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:03,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:03,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:03,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:39:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:03,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-27 21:39:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:03,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-27 21:39:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:03,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-27 21:39:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:03,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:39:03,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344347588] [2020-08-27 21:39:03,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:39:03,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 21:39:03,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406593192] [2020-08-27 21:39:03,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 21:39:03,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:03,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 21:39:03,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-27 21:39:03,615 INFO L87 Difference]: Start difference. First operand 335 states and 389 transitions. Second operand 9 states. [2020-08-27 21:39:04,130 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:04,695 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:06,498 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:08,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:08,121 INFO L93 Difference]: Finished difference Result 815 states and 1039 transitions. [2020-08-27 21:39:08,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-27 21:39:08,122 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-27 21:39:08,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:08,128 INFO L225 Difference]: With dead ends: 815 [2020-08-27 21:39:08,128 INFO L226 Difference]: Without dead ends: 627 [2020-08-27 21:39:08,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-27 21:39:08,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-08-27 21:39:08,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 556. [2020-08-27 21:39:08,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-08-27 21:39:08,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 666 transitions. [2020-08-27 21:39:08,222 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 666 transitions. Word has length 84 [2020-08-27 21:39:08,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:08,223 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 666 transitions. [2020-08-27 21:39:08,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 21:39:08,223 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 666 transitions. [2020-08-27 21:39:08,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-27 21:39:08,225 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:08,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:39:08,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-27 21:39:08,226 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:08,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:08,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1201377837, now seen corresponding path program 1 times [2020-08-27 21:39:08,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:08,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972504231] [2020-08-27 21:39:08,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,551 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:08,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:39:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-27 21:39:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:39:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-27 21:39:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-27 21:39:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-27 21:39:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:39:08,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972504231] [2020-08-27 21:39:08,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:39:08,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-27 21:39:08,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517268882] [2020-08-27 21:39:08,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-27 21:39:08,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:08,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-27 21:39:08,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-27 21:39:08,714 INFO L87 Difference]: Start difference. First operand 556 states and 666 transitions. Second operand 8 states. [2020-08-27 21:39:09,617 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:09,911 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:10,228 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:11,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:11,142 INFO L93 Difference]: Finished difference Result 1006 states and 1249 transitions. [2020-08-27 21:39:11,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-27 21:39:11,142 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-08-27 21:39:11,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:11,149 INFO L225 Difference]: With dead ends: 1006 [2020-08-27 21:39:11,149 INFO L226 Difference]: Without dead ends: 601 [2020-08-27 21:39:11,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:39:11,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-08-27 21:39:11,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 556. [2020-08-27 21:39:11,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-08-27 21:39:11,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 665 transitions. [2020-08-27 21:39:11,263 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 665 transitions. Word has length 84 [2020-08-27 21:39:11,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:11,263 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 665 transitions. [2020-08-27 21:39:11,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-27 21:39:11,263 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 665 transitions. [2020-08-27 21:39:11,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-27 21:39:11,265 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:11,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:39:11,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-27 21:39:11,266 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:11,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:11,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1128991279, now seen corresponding path program 1 times [2020-08-27 21:39:11,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:11,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902063153] [2020-08-27 21:39:11,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:11,577 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:11,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:11,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:11,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:11,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:11,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:11,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:39:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:11,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-27 21:39:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:11,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:11,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:11,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:11,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:39:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:11,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-27 21:39:11,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:11,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-27 21:39:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:11,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-27 21:39:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:11,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:39:11,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902063153] [2020-08-27 21:39:11,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:39:11,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-27 21:39:11,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015962487] [2020-08-27 21:39:11,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 21:39:11,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:11,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 21:39:11,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:39:11,758 INFO L87 Difference]: Start difference. First operand 556 states and 665 transitions. Second operand 12 states. [2020-08-27 21:39:12,439 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:12,734 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:13,014 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:13,729 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:14,017 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:39:14,363 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:14,655 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:15,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:15,672 INFO L93 Difference]: Finished difference Result 1144 states and 1416 transitions. [2020-08-27 21:39:15,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-27 21:39:15,673 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-27 21:39:15,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:15,677 INFO L225 Difference]: With dead ends: 1144 [2020-08-27 21:39:15,678 INFO L226 Difference]: Without dead ends: 612 [2020-08-27 21:39:15,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-27 21:39:15,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2020-08-27 21:39:15,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 563. [2020-08-27 21:39:15,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-08-27 21:39:15,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 672 transitions. [2020-08-27 21:39:15,802 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 672 transitions. Word has length 84 [2020-08-27 21:39:15,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:15,803 INFO L479 AbstractCegarLoop]: Abstraction has 563 states and 672 transitions. [2020-08-27 21:39:15,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 21:39:15,803 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 672 transitions. [2020-08-27 21:39:15,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-27 21:39:15,809 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:15,810 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] [2020-08-27 21:39:15,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-27 21:39:15,810 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:15,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:15,811 INFO L82 PathProgramCache]: Analyzing trace with hash -482545033, now seen corresponding path program 1 times [2020-08-27 21:39:15,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:15,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031030248] [2020-08-27 21:39:15,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,226 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:16,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:39:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-27 21:39:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:16,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:16,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:39:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-27 21:39:16,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-27 21:39:16,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-27 21:39:16,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-27 21:39:16,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031030248] [2020-08-27 21:39:16,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:39:16,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-27 21:39:16,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291692521] [2020-08-27 21:39:16,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 21:39:16,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:16,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 21:39:16,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:39:16,534 INFO L87 Difference]: Start difference. First operand 563 states and 672 transitions. Second operand 12 states. [2020-08-27 21:39:17,002 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:17,822 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:18,786 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:39:19,210 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:39:19,541 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:39:19,848 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:39:20,198 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:39:20,519 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:39:21,098 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-08-27 21:39:21,410 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:39:21,766 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:39:22,109 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-27 21:39:24,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:24,293 INFO L93 Difference]: Finished difference Result 1664 states and 2066 transitions. [2020-08-27 21:39:24,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-27 21:39:24,296 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-27 21:39:24,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:24,305 INFO L225 Difference]: With dead ends: 1664 [2020-08-27 21:39:24,305 INFO L226 Difference]: Without dead ends: 1125 [2020-08-27 21:39:24,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2020-08-27 21:39:24,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-08-27 21:39:24,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1062. [2020-08-27 21:39:24,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1062 states. [2020-08-27 21:39:24,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1253 transitions. [2020-08-27 21:39:24,471 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1253 transitions. Word has length 96 [2020-08-27 21:39:24,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:24,471 INFO L479 AbstractCegarLoop]: Abstraction has 1062 states and 1253 transitions. [2020-08-27 21:39:24,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 21:39:24,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1253 transitions. [2020-08-27 21:39:24,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-27 21:39:24,474 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:24,474 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:39:24,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-27 21:39:24,474 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:24,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:24,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1334976659, now seen corresponding path program 1 times [2020-08-27 21:39:24,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:24,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576344756] [2020-08-27 21:39:24,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:24,868 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:24,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:24,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:24,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:24,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:24,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:24,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:24,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:39:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:24,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-27 21:39:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:25,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-27 21:39:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:25,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:25,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:25,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:39:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:25,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:25,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:25,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-27 21:39:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:25,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-27 21:39:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:25,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-27 21:39:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:25,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-27 21:39:25,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576344756] [2020-08-27 21:39:25,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:39:25,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-27 21:39:25,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839502632] [2020-08-27 21:39:25,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-27 21:39:25,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:25,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-27 21:39:25,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-27 21:39:25,074 INFO L87 Difference]: Start difference. First operand 1062 states and 1253 transitions. Second operand 14 states. [2020-08-27 21:39:25,673 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:25,968 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:26,249 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:26,966 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:27,866 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:28,278 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:28,970 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:29,298 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:39:29,625 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:39:31,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:31,643 INFO L93 Difference]: Finished difference Result 2205 states and 2747 transitions. [2020-08-27 21:39:31,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-27 21:39:31,643 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 100 [2020-08-27 21:39:31,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:31,651 INFO L225 Difference]: With dead ends: 2205 [2020-08-27 21:39:31,651 INFO L226 Difference]: Without dead ends: 1167 [2020-08-27 21:39:31,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2020-08-27 21:39:31,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2020-08-27 21:39:31,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 978. [2020-08-27 21:39:31,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2020-08-27 21:39:31,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1149 transitions. [2020-08-27 21:39:31,834 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1149 transitions. Word has length 100 [2020-08-27 21:39:31,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:31,834 INFO L479 AbstractCegarLoop]: Abstraction has 978 states and 1149 transitions. [2020-08-27 21:39:31,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-27 21:39:31,835 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1149 transitions. [2020-08-27 21:39:31,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-27 21:39:31,837 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:31,837 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:39:31,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-27 21:39:31,838 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:31,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:31,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1799494055, now seen corresponding path program 1 times [2020-08-27 21:39:31,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:31,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532189850] [2020-08-27 21:39:31,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:32,219 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:32,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:32,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:32,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:32,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:32,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:32,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:39:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:32,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-27 21:39:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:32,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:32,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:32,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:39:32,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:32,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:32,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:32,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:32,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-27 21:39:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:32,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-27 21:39:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:32,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-27 21:39:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:32,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:39:32,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532189850] [2020-08-27 21:39:32,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:39:32,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-27 21:39:32,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347291792] [2020-08-27 21:39:32,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-27 21:39:32,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:32,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-27 21:39:32,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-27 21:39:32,383 INFO L87 Difference]: Start difference. First operand 978 states and 1149 transitions. Second operand 13 states. [2020-08-27 21:39:33,251 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:33,611 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:33,954 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:35,320 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:35,895 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:36,284 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:39:36,619 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:39:37,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:37,440 INFO L93 Difference]: Finished difference Result 1688 states and 1988 transitions. [2020-08-27 21:39:37,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-27 21:39:37,441 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 100 [2020-08-27 21:39:37,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:37,442 INFO L225 Difference]: With dead ends: 1688 [2020-08-27 21:39:37,442 INFO L226 Difference]: Without dead ends: 0 [2020-08-27 21:39:37,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2020-08-27 21:39:37,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-27 21:39:37,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-27 21:39:37,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-27 21:39:37,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-27 21:39:37,449 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 100 [2020-08-27 21:39:37,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:37,449 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-27 21:39:37,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-27 21:39:37,449 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-27 21:39:37,449 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-27 21:39:37,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-27 21:39:37,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-27 21:39:37,657 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:39:37,831 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:39:38,002 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:39:38,171 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-27 21:39:38,346 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:39:38,518 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:39:38,690 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-27 21:39:38,861 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:39:39,027 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:39:39,195 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-27 21:39:39,361 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:39:39,523 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-27 21:39:39,719 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-27 21:39:39,885 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:39:40,054 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:39:40,218 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:39:40,392 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-27 21:39:40,549 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:39:42,344 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-27 21:39:42,506 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:39:42,664 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:39:42,824 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:39:42,989 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:39:43,156 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:39:43,344 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:39:43,501 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:39:43,675 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-27 21:39:43,854 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 191