/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:34:09,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:34:09,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:34:09,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:34:09,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:34:09,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:34:09,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:34:09,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:34:09,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:34:09,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:34:09,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:34:09,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:34:09,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:34:09,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:34:09,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:34:09,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:34:09,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:34:09,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:34:09,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:34:09,412 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:34:09,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:34:09,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:34:09,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:34:09,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:34:09,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:34:09,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:34:09,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:34:09,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:34:09,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:34:09,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 02:34:09,438 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:34:09,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:34:09,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:34:09,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:34:09,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:34:09,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:34:09,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:34:09,445 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:34:09,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:34:09,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:34:09,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:34:09,448 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 02:34:09,493 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:34:09,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:34:09,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:34:09,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:34:09,497 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:34:09,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:34:09,498 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:34:09,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:34:09,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:34:09,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:34:09,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:34:09,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:34:09,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:34:09,501 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:34:09,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:34:09,502 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:34:09,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:34:09,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:34:09,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:34:09,505 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:34:09,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:34:09,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:34:09,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:34:09,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:34:09,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:34:09,510 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:34:09,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:34:09,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:34:09,511 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:34:09,511 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:34:09,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:34:09,867 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:34:09,871 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:34:09,873 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:34:09,873 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:34:09,874 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product37.cil.c [2020-08-19 02:34:09,936 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c6f4ac31/9860e8ea1ac14043a0c7f526a829bfec/FLAG13569c34a [2020-08-19 02:34:10,443 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:34:10,450 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product37.cil.c [2020-08-19 02:34:10,470 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c6f4ac31/9860e8ea1ac14043a0c7f526a829bfec/FLAG13569c34a [2020-08-19 02:34:10,798 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c6f4ac31/9860e8ea1ac14043a0c7f526a829bfec [2020-08-19 02:34:10,806 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:34:10,807 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:34:10,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:34:10,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:34:10,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:34:10,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:34:10" (1/1) ... [2020-08-19 02:34:10,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e42023b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:10, skipping insertion in model container [2020-08-19 02:34:10,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:34:10" (1/1) ... [2020-08-19 02:34:10,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:34:10,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:34:11,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:34:11,263 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:34:11,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:34:11,477 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:34:11,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:11 WrapperNode [2020-08-19 02:34:11,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:34:11,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:34:11,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:34:11,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:34:11,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:11" (1/1) ... [2020-08-19 02:34:11,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:11" (1/1) ... [2020-08-19 02:34:11,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:11" (1/1) ... [2020-08-19 02:34:11,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:11" (1/1) ... [2020-08-19 02:34:11,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:11" (1/1) ... [2020-08-19 02:34:11,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:11" (1/1) ... [2020-08-19 02:34:11,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:11" (1/1) ... [2020-08-19 02:34:11,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:34:11,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:34:11,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:34:11,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:34:11,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:34:11,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:34:11,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:34:11,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 02:34:11,656 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 02:34:11,656 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 02:34:11,656 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 02:34:11,656 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 02:34:11,657 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 02:34:11,657 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 02:34:11,658 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 02:34:11,658 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 02:34:11,658 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 02:34:11,658 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 02:34:11,658 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 02:34:11,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 02:34:11,659 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 02:34:11,660 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 02:34:11,660 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 02:34:11,660 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 02:34:11,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 02:34:11,660 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 02:34:11,660 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 02:34:11,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 02:34:11,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 02:34:11,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 02:34:11,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 02:34:11,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 02:34:11,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 02:34:11,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 02:34:11,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 02:34:11,663 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 02:34:11,663 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 02:34:11,663 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 02:34:11,663 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 02:34:11,663 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:34:11,664 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 02:34:11,664 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 02:34:11,664 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 02:34:11,664 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 02:34:11,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:34:11,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:34:11,665 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 02:34:11,666 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 02:34:11,666 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 02:34:11,667 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 02:34:11,668 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 02:34:11,668 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 02:34:11,668 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 02:34:11,668 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 02:34:11,668 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 02:34:11,668 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 02:34:11,669 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 02:34:11,669 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 02:34:11,669 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 02:34:11,669 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 02:34:11,670 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 02:34:11,670 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 02:34:11,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:34:11,670 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 02:34:11,670 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 02:34:11,671 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 02:34:11,671 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 02:34:11,671 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 02:34:11,671 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 02:34:11,671 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 02:34:11,671 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 02:34:11,672 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 02:34:11,672 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 02:34:11,672 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 02:34:11,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 02:34:11,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 02:34:11,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:34:11,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 02:34:11,674 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 02:34:11,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:34:11,675 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 02:34:11,675 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 02:34:11,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:34:11,676 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 02:34:11,676 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 02:34:11,676 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 02:34:11,676 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 02:34:11,676 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 02:34:11,676 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 02:34:11,677 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 02:34:11,677 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 02:34:11,677 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 02:34:11,677 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:34:11,677 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 02:34:11,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:34:11,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 02:34:11,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:34:12,737 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:34:12,738 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 02:34:12,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:34:12 BoogieIcfgContainer [2020-08-19 02:34:12,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:34:12,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:34:12,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:34:12,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:34:12,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:34:10" (1/3) ... [2020-08-19 02:34:12,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ee5481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:34:12, skipping insertion in model container [2020-08-19 02:34:12,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:11" (2/3) ... [2020-08-19 02:34:12,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ee5481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:34:12, skipping insertion in model container [2020-08-19 02:34:12,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:34:12" (3/3) ... [2020-08-19 02:34:12,753 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product37.cil.c [2020-08-19 02:34:12,764 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:34:12,773 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:34:12,788 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:34:12,814 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:34:12,815 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:34:12,815 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:34:12,815 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:34:12,816 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:34:12,816 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:34:12,816 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:34:12,816 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:34:12,840 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-08-19 02:34:12,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 02:34:12,851 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:12,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:34:12,852 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:12,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:12,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1991715745, now seen corresponding path program 1 times [2020-08-19 02:34:12,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:12,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589588202] [2020-08-19 02:34:12,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:13,559 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:13,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:13,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:13,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:13,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:13,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:13,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:13,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 02:34:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:13,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 02:34:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:13,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:13,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589588202] [2020-08-19 02:34:13,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:13,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 02:34:13,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267588777] [2020-08-19 02:34:13,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 02:34:13,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:13,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 02:34:13,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:34:13,683 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 4 states. [2020-08-19 02:34:14,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:14,875 INFO L93 Difference]: Finished difference Result 286 states and 375 transitions. [2020-08-19 02:34:14,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 02:34:14,878 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 02:34:14,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:14,893 INFO L225 Difference]: With dead ends: 286 [2020-08-19 02:34:14,893 INFO L226 Difference]: Without dead ends: 159 [2020-08-19 02:34:14,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:34:14,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-08-19 02:34:15,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 128. [2020-08-19 02:34:15,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-19 02:34:15,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 151 transitions. [2020-08-19 02:34:15,022 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 151 transitions. Word has length 51 [2020-08-19 02:34:15,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:15,022 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 151 transitions. [2020-08-19 02:34:15,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 02:34:15,023 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 151 transitions. [2020-08-19 02:34:15,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 02:34:15,026 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:15,027 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:34:15,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:34:15,027 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:15,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:15,028 INFO L82 PathProgramCache]: Analyzing trace with hash -392602955, now seen corresponding path program 1 times [2020-08-19 02:34:15,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:15,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115657227] [2020-08-19 02:34:15,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:15,369 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:15,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:15,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:15,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:15,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:15,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:15,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:15,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:15,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:15,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:34:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:15,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:34:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:15,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:15,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115657227] [2020-08-19 02:34:15,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:15,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 02:34:15,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102745068] [2020-08-19 02:34:15,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:34:15,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:15,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:34:15,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:34:15,432 INFO L87 Difference]: Start difference. First operand 128 states and 151 transitions. Second operand 5 states. [2020-08-19 02:34:15,893 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:16,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:16,685 INFO L93 Difference]: Finished difference Result 231 states and 286 transitions. [2020-08-19 02:34:16,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 02:34:16,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 02:34:16,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:16,690 INFO L225 Difference]: With dead ends: 231 [2020-08-19 02:34:16,691 INFO L226 Difference]: Without dead ends: 149 [2020-08-19 02:34:16,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:34:16,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-19 02:34:16,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2020-08-19 02:34:16,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-19 02:34:16,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 139 transitions. [2020-08-19 02:34:16,741 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 139 transitions. Word has length 52 [2020-08-19 02:34:16,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:16,742 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 139 transitions. [2020-08-19 02:34:16,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:34:16,742 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 139 transitions. [2020-08-19 02:34:16,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-19 02:34:16,749 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:16,749 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] [2020-08-19 02:34:16,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:34:16,750 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:16,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:16,750 INFO L82 PathProgramCache]: Analyzing trace with hash -368031557, now seen corresponding path program 1 times [2020-08-19 02:34:16,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:16,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168371760] [2020-08-19 02:34:16,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:17,183 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:17,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:17,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:17,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:17,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:17,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:17,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:17,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:17,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 02:34:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:17,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 02:34:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:17,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:17,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168371760] [2020-08-19 02:34:17,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:17,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:34:17,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679996236] [2020-08-19 02:34:17,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:34:17,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:17,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:34:17,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:34:17,269 INFO L87 Difference]: Start difference. First operand 119 states and 139 transitions. Second operand 9 states. [2020-08-19 02:34:17,617 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:17,944 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:18,221 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:18,458 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:19,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:19,611 INFO L93 Difference]: Finished difference Result 240 states and 301 transitions. [2020-08-19 02:34:19,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 02:34:19,619 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-19 02:34:19,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:19,622 INFO L225 Difference]: With dead ends: 240 [2020-08-19 02:34:19,622 INFO L226 Difference]: Without dead ends: 149 [2020-08-19 02:34:19,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 02:34:19,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-19 02:34:19,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2020-08-19 02:34:19,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-19 02:34:19,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2020-08-19 02:34:19,658 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 56 [2020-08-19 02:34:19,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:19,659 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2020-08-19 02:34:19,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:34:19,659 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2020-08-19 02:34:19,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-19 02:34:19,661 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:19,661 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] [2020-08-19 02:34:19,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:34:19,662 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:19,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:19,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1230357120, now seen corresponding path program 1 times [2020-08-19 02:34:19,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:19,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029856145] [2020-08-19 02:34:19,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:19,998 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:20,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:20,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:20,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:20,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:20,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:20,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:20,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 02:34:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:20,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:20,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:20,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:20,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 02:34:20,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:20,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-19 02:34:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:20,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:20,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029856145] [2020-08-19 02:34:20,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:20,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 02:34:20,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269755129] [2020-08-19 02:34:20,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 02:34:20,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:20,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 02:34:20,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:34:20,150 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand 7 states. [2020-08-19 02:34:20,519 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:21,713 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:22,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:22,360 INFO L93 Difference]: Finished difference Result 334 states and 423 transitions. [2020-08-19 02:34:22,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 02:34:22,361 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-08-19 02:34:22,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:22,365 INFO L225 Difference]: With dead ends: 334 [2020-08-19 02:34:22,365 INFO L226 Difference]: Without dead ends: 243 [2020-08-19 02:34:22,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-19 02:34:22,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-08-19 02:34:22,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 197. [2020-08-19 02:34:22,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-08-19 02:34:22,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 227 transitions. [2020-08-19 02:34:22,417 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 227 transitions. Word has length 69 [2020-08-19 02:34:22,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:22,418 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 227 transitions. [2020-08-19 02:34:22,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 02:34:22,418 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 227 transitions. [2020-08-19 02:34:22,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 02:34:22,420 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:22,420 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] [2020-08-19 02:34:22,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:34:22,420 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:22,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:22,421 INFO L82 PathProgramCache]: Analyzing trace with hash 810215565, now seen corresponding path program 1 times [2020-08-19 02:34:22,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:22,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519888137] [2020-08-19 02:34:22,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:22,694 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:22,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:22,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:22,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:22,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:22,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:22,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:22,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 02:34:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:22,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:22,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:22,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:22,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:22,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:34:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:22,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-19 02:34:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:22,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 02:34:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:22,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:22,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519888137] [2020-08-19 02:34:22,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:22,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:34:22,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464270349] [2020-08-19 02:34:22,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:34:22,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:22,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:34:22,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:34:22,830 INFO L87 Difference]: Start difference. First operand 197 states and 227 transitions. Second operand 9 states. [2020-08-19 02:34:23,201 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:24,335 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:24,618 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:24,851 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:25,064 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:25,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:25,958 INFO L93 Difference]: Finished difference Result 582 states and 737 transitions. [2020-08-19 02:34:25,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 02:34:25,960 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-19 02:34:25,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:25,966 INFO L225 Difference]: With dead ends: 582 [2020-08-19 02:34:25,966 INFO L226 Difference]: Without dead ends: 413 [2020-08-19 02:34:25,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 02:34:25,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-08-19 02:34:26,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 342. [2020-08-19 02:34:26,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-08-19 02:34:26,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 394 transitions. [2020-08-19 02:34:26,085 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 394 transitions. Word has length 83 [2020-08-19 02:34:26,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:26,088 INFO L479 AbstractCegarLoop]: Abstraction has 342 states and 394 transitions. [2020-08-19 02:34:26,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:34:26,088 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 394 transitions. [2020-08-19 02:34:26,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-19 02:34:26,090 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:26,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:34:26,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:34:26,090 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:26,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:26,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1817856655, now seen corresponding path program 1 times [2020-08-19 02:34:26,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:26,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034200164] [2020-08-19 02:34:26,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:26,392 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:26,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:26,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:26,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:26,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:26,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:26,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:26,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:26,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 02:34:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:26,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:34:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:26,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:26,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:26,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:26,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:34:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:26,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-19 02:34:26,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:26,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 02:34:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:26,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:26,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034200164] [2020-08-19 02:34:26,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:26,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 02:34:26,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979908180] [2020-08-19 02:34:26,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:34:26,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:26,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:34:26,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:34:26,568 INFO L87 Difference]: Start difference. First operand 342 states and 394 transitions. Second operand 10 states. [2020-08-19 02:34:26,931 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:28,093 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:28,323 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:28,564 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:28,816 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:29,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:29,889 INFO L93 Difference]: Finished difference Result 762 states and 947 transitions. [2020-08-19 02:34:29,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 02:34:29,890 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-08-19 02:34:29,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:29,895 INFO L225 Difference]: With dead ends: 762 [2020-08-19 02:34:29,895 INFO L226 Difference]: Without dead ends: 448 [2020-08-19 02:34:29,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-19 02:34:29,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-08-19 02:34:29,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 341. [2020-08-19 02:34:29,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-08-19 02:34:29,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 391 transitions. [2020-08-19 02:34:29,971 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 391 transitions. Word has length 87 [2020-08-19 02:34:29,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:29,971 INFO L479 AbstractCegarLoop]: Abstraction has 341 states and 391 transitions. [2020-08-19 02:34:29,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:34:29,972 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 391 transitions. [2020-08-19 02:34:29,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 02:34:29,973 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:29,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:34:29,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:34:29,974 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:29,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:29,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1046149773, now seen corresponding path program 1 times [2020-08-19 02:34:29,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:29,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917613375] [2020-08-19 02:34:29,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:30,253 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:30,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:30,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:30,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:30,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:30,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:30,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:30,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:30,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 02:34:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:30,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:34:30,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:30,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:30,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:30,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:30,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:34:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:30,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 02:34:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:30,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 02:34:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:30,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:30,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917613375] [2020-08-19 02:34:30,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:30,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 02:34:30,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680001579] [2020-08-19 02:34:30,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:34:30,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:30,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:34:30,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:34:30,424 INFO L87 Difference]: Start difference. First operand 341 states and 391 transitions. Second operand 10 states. [2020-08-19 02:34:31,410 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:31,668 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 02:34:31,909 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:32,150 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:33,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:33,184 INFO L93 Difference]: Finished difference Result 765 states and 956 transitions. [2020-08-19 02:34:33,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 02:34:33,185 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-19 02:34:33,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:33,188 INFO L225 Difference]: With dead ends: 765 [2020-08-19 02:34:33,189 INFO L226 Difference]: Without dead ends: 452 [2020-08-19 02:34:33,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 02:34:33,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-08-19 02:34:33,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 351. [2020-08-19 02:34:33,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-08-19 02:34:33,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 401 transitions. [2020-08-19 02:34:33,261 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 401 transitions. Word has length 88 [2020-08-19 02:34:33,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:33,262 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 401 transitions. [2020-08-19 02:34:33,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:34:33,262 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 401 transitions. [2020-08-19 02:34:33,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 02:34:33,263 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:33,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:34:33,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 02:34:33,264 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:33,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:33,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1747749647, now seen corresponding path program 1 times [2020-08-19 02:34:33,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:33,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136164455] [2020-08-19 02:34:33,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,534 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:33,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:33,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 02:34:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:34:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:34:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 02:34:33,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 02:34:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:33,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136164455] [2020-08-19 02:34:33,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:33,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 02:34:33,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000749588] [2020-08-19 02:34:33,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:34:33,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:33,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:34:33,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:34:33,704 INFO L87 Difference]: Start difference. First operand 351 states and 401 transitions. Second operand 12 states. [2020-08-19 02:34:34,567 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:34,926 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:35,280 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:35,926 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:36,168 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:36,401 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:37,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:37,558 INFO L93 Difference]: Finished difference Result 789 states and 998 transitions. [2020-08-19 02:34:37,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 02:34:37,561 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2020-08-19 02:34:37,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:37,565 INFO L225 Difference]: With dead ends: 789 [2020-08-19 02:34:37,566 INFO L226 Difference]: Without dead ends: 466 [2020-08-19 02:34:37,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-19 02:34:37,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-08-19 02:34:37,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 359. [2020-08-19 02:34:37,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2020-08-19 02:34:37,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 409 transitions. [2020-08-19 02:34:37,635 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 409 transitions. Word has length 88 [2020-08-19 02:34:37,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:37,636 INFO L479 AbstractCegarLoop]: Abstraction has 359 states and 409 transitions. [2020-08-19 02:34:37,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:34:37,636 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 409 transitions. [2020-08-19 02:34:37,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 02:34:37,637 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:37,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:34:37,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 02:34:37,638 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:37,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:37,639 INFO L82 PathProgramCache]: Analyzing trace with hash -821736752, now seen corresponding path program 1 times [2020-08-19 02:34:37,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:37,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822399070] [2020-08-19 02:34:37,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:37,982 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:37,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:38,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:38,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:38,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:38,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:38,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:38,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:38,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 02:34:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:38,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:34:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:38,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:38,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:38,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:38,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:34:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:38,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 02:34:38,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:38,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 02:34:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:38,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:38,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822399070] [2020-08-19 02:34:38,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:38,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 02:34:38,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950661432] [2020-08-19 02:34:38,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:34:38,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:38,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:34:38,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:34:38,179 INFO L87 Difference]: Start difference. First operand 359 states and 409 transitions. Second operand 8 states. [2020-08-19 02:34:38,637 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:39,167 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:41,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:41,372 INFO L93 Difference]: Finished difference Result 1108 states and 1449 transitions. [2020-08-19 02:34:41,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 02:34:41,372 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-08-19 02:34:41,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:41,381 INFO L225 Difference]: With dead ends: 1108 [2020-08-19 02:34:41,381 INFO L226 Difference]: Without dead ends: 777 [2020-08-19 02:34:41,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-08-19 02:34:41,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2020-08-19 02:34:41,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 645. [2020-08-19 02:34:41,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2020-08-19 02:34:41,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 763 transitions. [2020-08-19 02:34:41,515 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 763 transitions. Word has length 88 [2020-08-19 02:34:41,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:41,515 INFO L479 AbstractCegarLoop]: Abstraction has 645 states and 763 transitions. [2020-08-19 02:34:41,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:34:41,516 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 763 transitions. [2020-08-19 02:34:41,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 02:34:41,520 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:41,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:34:41,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 02:34:41,520 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:41,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:41,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1708334166, now seen corresponding path program 1 times [2020-08-19 02:34:41,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:41,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108488293] [2020-08-19 02:34:41,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:41,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,849 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:41,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:41,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:34:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:34:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 02:34:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:34:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 02:34:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:42,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 02:34:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:42,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:42,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108488293] [2020-08-19 02:34:42,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:42,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 02:34:42,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354749934] [2020-08-19 02:34:42,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:34:42,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:42,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:34:42,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:34:42,029 INFO L87 Difference]: Start difference. First operand 645 states and 763 transitions. Second operand 8 states. [2020-08-19 02:34:42,539 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:44,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:44,848 INFO L93 Difference]: Finished difference Result 1272 states and 1654 transitions. [2020-08-19 02:34:44,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 02:34:44,849 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2020-08-19 02:34:44,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:44,858 INFO L225 Difference]: With dead ends: 1272 [2020-08-19 02:34:44,858 INFO L226 Difference]: Without dead ends: 1269 [2020-08-19 02:34:44,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2020-08-19 02:34:44,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2020-08-19 02:34:45,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1071. [2020-08-19 02:34:45,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1071 states. [2020-08-19 02:34:45,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1280 transitions. [2020-08-19 02:34:45,063 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1280 transitions. Word has length 92 [2020-08-19 02:34:45,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:45,064 INFO L479 AbstractCegarLoop]: Abstraction has 1071 states and 1280 transitions. [2020-08-19 02:34:45,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:34:45,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1280 transitions. [2020-08-19 02:34:45,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-19 02:34:45,068 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:45,068 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:34:45,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 02:34:45,069 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:45,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:45,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1546611492, now seen corresponding path program 1 times [2020-08-19 02:34:45,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:45,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628734445] [2020-08-19 02:34:45,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,389 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:45,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:45,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:34:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:34:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:34:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:45,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:34:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:34:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 02:34:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-19 02:34:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 02:34:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 02:34:45,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-19 02:34:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-19 02:34:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:45,709 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-19 02:34:45,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628734445] [2020-08-19 02:34:45,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:34:45,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 02:34:45,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694112405] [2020-08-19 02:34:45,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 02:34:45,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:45,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 02:34:45,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-19 02:34:45,712 INFO L87 Difference]: Start difference. First operand 1071 states and 1280 transitions. Second operand 19 states. [2020-08-19 02:34:46,345 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:46,687 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:34:46,963 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:34:47,223 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:34:47,907 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:48,996 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:49,329 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:50,588 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:50,855 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:51,154 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:51,413 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:51,666 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:51,925 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:52,221 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:52,465 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:53,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:53,190 INFO L93 Difference]: Finished difference Result 2024 states and 2482 transitions. [2020-08-19 02:34:53,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-08-19 02:34:53,190 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 150 [2020-08-19 02:34:53,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:53,198 INFO L225 Difference]: With dead ends: 2024 [2020-08-19 02:34:53,198 INFO L226 Difference]: Without dead ends: 981 [2020-08-19 02:34:53,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=510, Invalid=2352, Unknown=0, NotChecked=0, Total=2862 [2020-08-19 02:34:53,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2020-08-19 02:34:53,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 858. [2020-08-19 02:34:53,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 858 states. [2020-08-19 02:34:53,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 979 transitions. [2020-08-19 02:34:53,409 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 979 transitions. Word has length 150 [2020-08-19 02:34:53,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:53,412 INFO L479 AbstractCegarLoop]: Abstraction has 858 states and 979 transitions. [2020-08-19 02:34:53,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 02:34:53,412 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 979 transitions. [2020-08-19 02:34:53,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-19 02:34:53,415 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:53,416 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:34:53,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 02:34:53,416 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:53,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:53,417 INFO L82 PathProgramCache]: Analyzing trace with hash 182941043, now seen corresponding path program 1 times [2020-08-19 02:34:53,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:53,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172712223] [2020-08-19 02:34:53,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:53,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,733 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:53,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:34:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:34:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:34:53,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:34:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:34:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 02:34:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 02:34:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:34:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-19 02:34:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-19 02:34:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,964 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-19 02:34:53,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172712223] [2020-08-19 02:34:53,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:34:53,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 02:34:53,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143688175] [2020-08-19 02:34:53,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 02:34:53,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:53,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 02:34:53,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-19 02:34:53,966 INFO L87 Difference]: Start difference. First operand 858 states and 979 transitions. Second operand 13 states. [2020-08-19 02:34:54,536 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:54,774 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:54,996 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:55,949 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:57,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:57,498 INFO L93 Difference]: Finished difference Result 1517 states and 1820 transitions. [2020-08-19 02:34:57,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-19 02:34:57,499 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 150 [2020-08-19 02:34:57,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:57,500 INFO L225 Difference]: With dead ends: 1517 [2020-08-19 02:34:57,500 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 02:34:57,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2020-08-19 02:34:57,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 02:34:57,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 02:34:57,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 02:34:57,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 02:34:57,506 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 150 [2020-08-19 02:34:57,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:57,506 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 02:34:57,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 02:34:57,507 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 02:34:57,507 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 02:34:57,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 02:34:57,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 02:34:58,797 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 204 [2020-08-19 02:34:59,113 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 201 [2020-08-19 02:34:59,941 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 202 [2020-08-19 02:35:00,389 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 204 [2020-08-19 02:35:00,726 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 202 [2020-08-19 02:35:01,700 WARN L193 SmtUtils]: Spent 971.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 282 [2020-08-19 02:35:02,773 WARN L193 SmtUtils]: Spent 834.00 ms on a formula simplification. DAG size of input: 339 DAG size of output: 297 [2020-08-19 02:35:03,872 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 204 [2020-08-19 02:35:04,000 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 201 [2020-08-19 02:35:04,386 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 202 [2020-08-19 02:35:04,553 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 204 [2020-08-19 02:35:05,370 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 282 [2020-08-19 02:35:06,311 WARN L193 SmtUtils]: Spent 867.00 ms on a formula simplification. DAG size of input: 354 DAG size of output: 310