/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:02:45,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:02:45,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:02:45,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:02:45,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:02:45,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:02:45,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:02:45,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:02:45,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:02:45,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:02:45,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:02:45,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:02:45,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:02:45,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:02:45,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:02:45,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:02:45,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:02:45,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:02:45,397 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:02:45,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:02:45,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:02:45,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:02:45,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:02:45,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:02:45,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:02:45,406 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:02:45,406 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:02:45,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:02:45,408 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:02:45,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:02:45,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:02:45,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:02:45,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:02:45,411 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:02:45,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:02:45,412 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:02:45,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:02:45,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:02:45,413 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:02:45,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:02:45,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:02:45,415 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 02:02:45,437 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:02:45,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:02:45,438 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:02:45,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:02:45,439 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:02:45,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:02:45,439 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:02:45,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:02:45,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:02:45,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:02:45,440 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:02:45,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:02:45,440 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:02:45,441 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:02:45,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:02:45,441 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:02:45,441 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:02:45,441 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:02:45,442 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:02:45,442 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:02:45,442 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:02:45,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:02:45,442 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:02:45,442 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:02:45,443 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:02:45,443 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:02:45,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:02:45,443 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:02:45,443 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:02:45,444 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-08-22 02:02:45,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:02:45,780 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:02:45,785 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:02:45,788 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:02:45,789 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:02:45,790 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product55.cil.c [2020-08-22 02:02:45,867 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/984502dc2/38cae4beaee2467bac054e425cfdf5ba/FLAG8fc28cb08 [2020-08-22 02:02:46,454 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:02:46,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product55.cil.c [2020-08-22 02:02:46,467 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/984502dc2/38cae4beaee2467bac054e425cfdf5ba/FLAG8fc28cb08 [2020-08-22 02:02:46,787 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/984502dc2/38cae4beaee2467bac054e425cfdf5ba [2020-08-22 02:02:46,796 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:02:46,797 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:02:46,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:02:46,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:02:46,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:02:46,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:02:46" (1/1) ... [2020-08-22 02:02:46,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26571d4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:02:46, skipping insertion in model container [2020-08-22 02:02:46,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:02:46" (1/1) ... [2020-08-22 02:02:46,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:02:46,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:02:47,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:02:47,315 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:02:47,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:02:47,452 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:02:47,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:02:47 WrapperNode [2020-08-22 02:02:47,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:02:47,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:02:47,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:02:47,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:02:47,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:02:47" (1/1) ... [2020-08-22 02:02:47,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:02:47" (1/1) ... [2020-08-22 02:02:47,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:02:47" (1/1) ... [2020-08-22 02:02:47,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:02:47" (1/1) ... [2020-08-22 02:02:47,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:02:47" (1/1) ... [2020-08-22 02:02:47,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:02:47" (1/1) ... [2020-08-22 02:02:47,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:02:47" (1/1) ... [2020-08-22 02:02:47,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:02:47,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:02:47,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:02:47,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:02:47,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:02:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:02:47,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:02:47,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:02:47,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 02:02:47,618 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 02:02:47,618 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 02:02:47,619 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 02:02:47,619 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 02:02:47,619 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 02:02:47,619 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 02:02:47,620 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 02:02:47,620 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 02:02:47,620 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 02:02:47,620 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 02:02:47,621 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 02:02:47,621 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 02:02:47,622 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 02:02:47,622 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 02:02:47,622 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 02:02:47,622 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 02:02:47,622 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-22 02:02:47,622 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 02:02:47,622 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 02:02:47,623 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 02:02:47,623 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 02:02:47,623 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 02:02:47,624 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 02:02:47,624 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 02:02:47,624 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 02:02:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 02:02:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 02:02:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 02:02:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 02:02:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 02:02:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 02:02:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 02:02:47,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-22 02:02:47,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-22 02:02:47,626 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 02:02:47,626 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 02:02:47,626 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 02:02:47,626 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 02:02:47,626 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:02:47,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 02:02:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:02:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:02:47,628 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 02:02:47,628 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 02:02:47,628 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 02:02:47,628 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 02:02:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 02:02:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 02:02:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 02:02:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 02:02:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 02:02:47,630 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 02:02:47,630 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 02:02:47,630 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 02:02:47,630 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 02:02:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:02:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 02:02:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 02:02:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 02:02:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 02:02:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 02:02:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 02:02:47,632 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 02:02:47,632 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 02:02:47,632 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-22 02:02:47,632 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 02:02:47,632 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 02:02:47,632 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 02:02:47,633 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 02:02:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 02:02:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-22 02:02:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 02:02:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 02:02:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 02:02:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 02:02:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 02:02:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 02:02:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 02:02:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:02:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 02:02:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 02:02:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:02:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 02:02:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 02:02:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:02:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 02:02:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 02:02:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 02:02:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 02:02:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-22 02:02:47,638 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 02:02:47,638 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 02:02:47,638 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 02:02:47,638 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:02:47,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:02:47,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 02:02:47,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:02:48,680 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:02:48,680 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 02:02:48,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:02:48 BoogieIcfgContainer [2020-08-22 02:02:48,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:02:48,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:02:48,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:02:48,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:02:48,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:02:46" (1/3) ... [2020-08-22 02:02:48,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30acd187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:02:48, skipping insertion in model container [2020-08-22 02:02:48,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:02:47" (2/3) ... [2020-08-22 02:02:48,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30acd187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:02:48, skipping insertion in model container [2020-08-22 02:02:48,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:02:48" (3/3) ... [2020-08-22 02:02:48,695 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product55.cil.c [2020-08-22 02:02:48,705 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:02:48,714 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:02:48,728 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:02:48,753 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:02:48,754 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:02:48,754 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:02:48,754 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:02:48,755 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:02:48,755 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:02:48,755 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:02:48,755 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:02:48,778 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2020-08-22 02:02:48,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 02:02:48,790 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:02:48,791 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] [2020-08-22 02:02:48,791 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:02:48,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:02:48,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1134611440, now seen corresponding path program 1 times [2020-08-22 02:02:48,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:02:48,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026738613] [2020-08-22 02:02:48,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:02:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:49,506 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:02:49,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:02:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:49,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:02:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:49,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:02:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:49,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:02:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:49,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:02:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:49,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:02:49,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:49,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:02:49,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:49,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 02:02:49,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:49,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:02:49,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026738613] [2020-08-22 02:02:49,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:02:49,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 02:02:49,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612663089] [2020-08-22 02:02:49,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 02:02:49,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:02:49,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 02:02:49,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:02:49,708 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 4 states. [2020-08-22 02:02:50,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:02:50,867 INFO L93 Difference]: Finished difference Result 343 states and 449 transitions. [2020-08-22 02:02:50,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 02:02:50,869 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-22 02:02:50,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:02:50,885 INFO L225 Difference]: With dead ends: 343 [2020-08-22 02:02:50,886 INFO L226 Difference]: Without dead ends: 190 [2020-08-22 02:02:50,891 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 [2020-08-22 02:02:50,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-08-22 02:02:51,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 154. [2020-08-22 02:02:51,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-08-22 02:02:51,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 184 transitions. [2020-08-22 02:02:51,061 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 184 transitions. Word has length 51 [2020-08-22 02:02:51,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:02:51,062 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 184 transitions. [2020-08-22 02:02:51,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 02:02:51,062 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 184 transitions. [2020-08-22 02:02:51,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 02:02:51,076 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:02:51,076 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] [2020-08-22 02:02:51,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:02:51,077 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:02:51,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:02:51,078 INFO L82 PathProgramCache]: Analyzing trace with hash -179918531, now seen corresponding path program 1 times [2020-08-22 02:02:51,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:02:51,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113927727] [2020-08-22 02:02:51,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:02:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:51,484 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:02:51,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:02:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:51,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:02:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:51,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:02:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:51,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:02:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:51,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:02:51,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:51,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:02:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:51,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:02:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:51,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 02:02:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:51,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:02:51,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [113927727] [2020-08-22 02:02:51,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:02:51,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 02:02:51,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262889183] [2020-08-22 02:02:51,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 02:02:51,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:02:51,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 02:02:51,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:02:51,537 INFO L87 Difference]: Start difference. First operand 154 states and 184 transitions. Second operand 5 states. [2020-08-22 02:02:51,982 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:02:53,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:02:53,060 INFO L93 Difference]: Finished difference Result 282 states and 352 transitions. [2020-08-22 02:02:53,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 02:02:53,061 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-22 02:02:53,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:02:53,065 INFO L225 Difference]: With dead ends: 282 [2020-08-22 02:02:53,065 INFO L226 Difference]: Without dead ends: 180 [2020-08-22 02:02:53,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 02:02:53,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-08-22 02:02:53,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 145. [2020-08-22 02:02:53,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-08-22 02:02:53,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 172 transitions. [2020-08-22 02:02:53,111 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 172 transitions. Word has length 52 [2020-08-22 02:02:53,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:02:53,112 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 172 transitions. [2020-08-22 02:02:53,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 02:02:53,112 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 172 transitions. [2020-08-22 02:02:53,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-22 02:02:53,114 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:02:53,114 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] [2020-08-22 02:02:53,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:02:53,114 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:02:53,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:02:53,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1227863388, now seen corresponding path program 1 times [2020-08-22 02:02:53,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:02:53,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321698132] [2020-08-22 02:02:53,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:02:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:53,429 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:02:53,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:02:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:53,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:02:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:53,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:02:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:53,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:02:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:53,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:02:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:53,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:02:53,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:53,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 02:02:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:53,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 02:02:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:53,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:02:53,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321698132] [2020-08-22 02:02:53,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:02:53,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:02:53,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228018817] [2020-08-22 02:02:53,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:02:53,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:02:53,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:02:53,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:02:53,537 INFO L87 Difference]: Start difference. First operand 145 states and 172 transitions. Second operand 9 states. [2020-08-22 02:02:53,960 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:02:54,256 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:54,492 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:54,727 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:55,504 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:02:57,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:02:57,810 INFO L93 Difference]: Finished difference Result 487 states and 618 transitions. [2020-08-22 02:02:57,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 02:02:57,813 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-22 02:02:57,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:02:57,818 INFO L225 Difference]: With dead ends: 487 [2020-08-22 02:02:57,818 INFO L226 Difference]: Without dead ends: 370 [2020-08-22 02:02:57,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-22 02:02:57,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-08-22 02:02:57,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 305. [2020-08-22 02:02:57,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-08-22 02:02:57,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 374 transitions. [2020-08-22 02:02:57,909 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 374 transitions. Word has length 56 [2020-08-22 02:02:57,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:02:57,910 INFO L479 AbstractCegarLoop]: Abstraction has 305 states and 374 transitions. [2020-08-22 02:02:57,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:02:57,910 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 374 transitions. [2020-08-22 02:02:57,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-22 02:02:57,912 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:02:57,912 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] [2020-08-22 02:02:57,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:02:57,913 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:02:57,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:02:57,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1601957820, now seen corresponding path program 1 times [2020-08-22 02:02:57,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:02:57,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031009145] [2020-08-22 02:02:57,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:02:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:58,183 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:02:58,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:02:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:58,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:02:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:58,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:02:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:58,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:02:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:58,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:02:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:58,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:02:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:58,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:02:58,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:58,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 02:02:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:58,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 02:02:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:58,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:02:58,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031009145] [2020-08-22 02:02:58,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:02:58,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:02:58,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311326569] [2020-08-22 02:02:58,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:02:58,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:02:58,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:02:58,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:02:58,272 INFO L87 Difference]: Start difference. First operand 305 states and 374 transitions. Second operand 9 states. [2020-08-22 02:02:58,723 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:02:59,662 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:03:00,133 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:03:00,460 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:03:00,716 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:03:02,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:03:02,448 INFO L93 Difference]: Finished difference Result 973 states and 1285 transitions. [2020-08-22 02:03:02,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 02:03:02,449 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-22 02:03:02,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:03:02,456 INFO L225 Difference]: With dead ends: 973 [2020-08-22 02:03:02,456 INFO L226 Difference]: Without dead ends: 696 [2020-08-22 02:03:02,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-22 02:03:02,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-08-22 02:03:02,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 558. [2020-08-22 02:03:02,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2020-08-22 02:03:02,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 688 transitions. [2020-08-22 02:03:02,593 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 688 transitions. Word has length 62 [2020-08-22 02:03:02,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:03:02,594 INFO L479 AbstractCegarLoop]: Abstraction has 558 states and 688 transitions. [2020-08-22 02:03:02,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:03:02,594 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 688 transitions. [2020-08-22 02:03:02,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-22 02:03:02,596 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:03:02,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:03:02,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 02:03:02,597 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:03:02,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:03:02,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1204720808, now seen corresponding path program 1 times [2020-08-22 02:03:02,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:03:02,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003853155] [2020-08-22 02:03:02,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:03:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:02,887 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:03:02,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:03:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:02,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:03:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:02,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:03:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:02,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:03:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:02,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:03:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:02,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:03:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:02,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 02:03:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:02,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 02:03:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:02,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 02:03:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:02,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 02:03:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:03,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:03:03,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003853155] [2020-08-22 02:03:03,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:03:03,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 02:03:03,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346883889] [2020-08-22 02:03:03,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 02:03:03,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:03:03,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 02:03:03,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 02:03:03,007 INFO L87 Difference]: Start difference. First operand 558 states and 688 transitions. Second operand 10 states. [2020-08-22 02:03:03,490 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:03:04,517 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:03:04,824 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:03:05,091 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:03:05,818 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:03:07,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:03:07,285 INFO L93 Difference]: Finished difference Result 1531 states and 2090 transitions. [2020-08-22 02:03:07,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 02:03:07,286 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-22 02:03:07,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:03:07,296 INFO L225 Difference]: With dead ends: 1531 [2020-08-22 02:03:07,296 INFO L226 Difference]: Without dead ends: 1001 [2020-08-22 02:03:07,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-22 02:03:07,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2020-08-22 02:03:07,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 805. [2020-08-22 02:03:07,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 805 states. [2020-08-22 02:03:07,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 983 transitions. [2020-08-22 02:03:07,538 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 983 transitions. Word has length 66 [2020-08-22 02:03:07,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:03:07,540 INFO L479 AbstractCegarLoop]: Abstraction has 805 states and 983 transitions. [2020-08-22 02:03:07,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 02:03:07,540 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 983 transitions. [2020-08-22 02:03:07,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 02:03:07,543 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:03:07,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:03:07,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 02:03:07,544 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:03:07,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:03:07,544 INFO L82 PathProgramCache]: Analyzing trace with hash -763723638, now seen corresponding path program 1 times [2020-08-22 02:03:07,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:03:07,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913239592] [2020-08-22 02:03:07,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:03:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:07,847 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:03:07,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:03:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:07,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:03:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:07,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:03:07,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:07,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:03:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:07,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:03:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:07,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:03:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:07,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 02:03:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:07,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 02:03:07,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:07,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:07,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:07,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:07,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:03:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:07,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:03:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:07,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 02:03:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:07,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 02:03:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:03:08,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913239592] [2020-08-22 02:03:08,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:03:08,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 02:03:08,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326319481] [2020-08-22 02:03:08,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 02:03:08,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:03:08,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 02:03:08,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 02:03:08,014 INFO L87 Difference]: Start difference. First operand 805 states and 983 transitions. Second operand 10 states. [2020-08-22 02:03:09,333 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:03:09,613 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 02:03:09,911 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:03:10,167 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:03:11,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:03:11,514 INFO L93 Difference]: Finished difference Result 1854 states and 2470 transitions. [2020-08-22 02:03:11,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 02:03:11,515 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-08-22 02:03:11,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:03:11,522 INFO L225 Difference]: With dead ends: 1854 [2020-08-22 02:03:11,523 INFO L226 Difference]: Without dead ends: 1077 [2020-08-22 02:03:11,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-22 02:03:11,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2020-08-22 02:03:11,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 831. [2020-08-22 02:03:11,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 831 states. [2020-08-22 02:03:11,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1011 transitions. [2020-08-22 02:03:11,736 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1011 transitions. Word has length 93 [2020-08-22 02:03:11,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:03:11,737 INFO L479 AbstractCegarLoop]: Abstraction has 831 states and 1011 transitions. [2020-08-22 02:03:11,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 02:03:11,737 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1011 transitions. [2020-08-22 02:03:11,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 02:03:11,740 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:03:11,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:03:11,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 02:03:11,741 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:03:11,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:03:11,741 INFO L82 PathProgramCache]: Analyzing trace with hash -836110196, now seen corresponding path program 1 times [2020-08-22 02:03:11,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:03:11,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042030641] [2020-08-22 02:03:11,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:03:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:11,993 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:03:11,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:03:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:12,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:03:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:12,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:03:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:12,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:03:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:12,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:03:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:12,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:03:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:12,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 02:03:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:12,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 02:03:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:12,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:12,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:12,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:12,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:03:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:12,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:03:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:12,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 02:03:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:12,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 02:03:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:12,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:03:12,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042030641] [2020-08-22 02:03:12,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:03:12,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 02:03:12,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713036567] [2020-08-22 02:03:12,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 02:03:12,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:03:12,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 02:03:12,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:03:12,176 INFO L87 Difference]: Start difference. First operand 831 states and 1011 transitions. Second operand 12 states. [2020-08-22 02:03:12,706 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:03:12,972 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:03:13,252 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:03:14,035 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:03:14,305 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:03:14,555 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:03:16,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:03:16,010 INFO L93 Difference]: Finished difference Result 1908 states and 2587 transitions. [2020-08-22 02:03:16,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 02:03:16,011 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 93 [2020-08-22 02:03:16,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:03:16,021 INFO L225 Difference]: With dead ends: 1908 [2020-08-22 02:03:16,021 INFO L226 Difference]: Without dead ends: 1105 [2020-08-22 02:03:16,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-22 02:03:16,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2020-08-22 02:03:16,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 847. [2020-08-22 02:03:16,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-08-22 02:03:16,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1027 transitions. [2020-08-22 02:03:16,244 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1027 transitions. Word has length 93 [2020-08-22 02:03:16,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:03:16,244 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1027 transitions. [2020-08-22 02:03:16,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 02:03:16,245 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1027 transitions. [2020-08-22 02:03:16,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 02:03:16,255 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:03:16,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:03:16,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 02:03:16,256 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:03:16,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:03:16,257 INFO L82 PathProgramCache]: Analyzing trace with hash -506344435, now seen corresponding path program 1 times [2020-08-22 02:03:16,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:03:16,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925597245] [2020-08-22 02:03:16,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:03:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:16,509 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:03:16,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:03:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:16,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:03:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:16,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:03:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:16,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:03:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:16,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:03:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:16,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:03:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:16,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 02:03:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:16,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 02:03:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:16,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:16,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:16,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:16,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:16,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:16,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:03:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:16,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:03:16,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:16,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 02:03:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:16,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 02:03:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:16,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:03:16,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925597245] [2020-08-22 02:03:16,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:03:16,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 02:03:16,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33055291] [2020-08-22 02:03:16,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 02:03:16,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:03:16,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 02:03:16,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:03:16,702 INFO L87 Difference]: Start difference. First operand 847 states and 1027 transitions. Second operand 8 states. [2020-08-22 02:03:17,129 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:03:17,729 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:03:20,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:03:20,770 INFO L93 Difference]: Finished difference Result 2850 states and 3893 transitions. [2020-08-22 02:03:20,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 02:03:20,771 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-22 02:03:20,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:03:20,788 INFO L225 Difference]: With dead ends: 2850 [2020-08-22 02:03:20,788 INFO L226 Difference]: Without dead ends: 2031 [2020-08-22 02:03:20,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-22 02:03:20,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2020-08-22 02:03:21,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 1687. [2020-08-22 02:03:21,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2020-08-22 02:03:21,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2069 transitions. [2020-08-22 02:03:21,195 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2069 transitions. Word has length 93 [2020-08-22 02:03:21,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:03:21,195 INFO L479 AbstractCegarLoop]: Abstraction has 1687 states and 2069 transitions. [2020-08-22 02:03:21,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 02:03:21,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2069 transitions. [2020-08-22 02:03:21,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-22 02:03:21,200 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:03:21,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:03:21,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 02:03:21,200 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:03:21,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:03:21,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1600364013, now seen corresponding path program 1 times [2020-08-22 02:03:21,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:03:21,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798500645] [2020-08-22 02:03:21,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:03:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:21,468 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:03:21,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:03:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:21,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:03:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:21,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:03:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:21,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:03:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:21,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:03:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:21,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:03:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:21,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:03:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:21,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:03:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:21,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 02:03:21,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:21,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:21,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:21,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:21,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:03:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:21,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:03:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:21,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-22 02:03:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:21,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 02:03:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:21,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:03:21,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798500645] [2020-08-22 02:03:21,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:03:21,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 02:03:21,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775736568] [2020-08-22 02:03:21,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 02:03:21,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:03:21,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 02:03:21,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:03:21,617 INFO L87 Difference]: Start difference. First operand 1687 states and 2069 transitions. Second operand 8 states. [2020-08-22 02:03:22,079 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:03:25,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:03:25,221 INFO L93 Difference]: Finished difference Result 3406 states and 4667 transitions. [2020-08-22 02:03:25,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 02:03:25,222 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2020-08-22 02:03:25,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:03:25,244 INFO L225 Difference]: With dead ends: 3406 [2020-08-22 02:03:25,244 INFO L226 Difference]: Without dead ends: 3403 [2020-08-22 02:03:25,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-22 02:03:25,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3403 states. [2020-08-22 02:03:25,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3403 to 2826. [2020-08-22 02:03:25,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2826 states. [2020-08-22 02:03:25,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 3547 transitions. [2020-08-22 02:03:25,923 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 3547 transitions. Word has length 97 [2020-08-22 02:03:25,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:03:25,926 INFO L479 AbstractCegarLoop]: Abstraction has 2826 states and 3547 transitions. [2020-08-22 02:03:25,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 02:03:25,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 3547 transitions. [2020-08-22 02:03:25,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-08-22 02:03:25,937 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:03:25,938 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 02:03:25,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 02:03:25,939 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:03:25,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:03:25,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1898255401, now seen corresponding path program 1 times [2020-08-22 02:03:25,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:03:25,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981006404] [2020-08-22 02:03:25,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:03:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:26,301 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:03:26,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:03:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:26,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:03:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:26,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:03:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:26,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:03:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:26,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:03:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:26,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:03:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:26,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:03:26,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:26,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:03:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:26,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:03:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:26,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:26,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:26,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:26,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:26,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:03:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:26,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:03:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:26,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 02:03:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:26,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:03:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:26,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 02:03:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:26,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 02:03:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:26,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 02:03:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:26,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:26,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:03:26,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:26,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:03:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:26,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:26,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:26,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:03:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:26,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:03:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:26,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 02:03:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:26,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-22 02:03:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:26,602 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-08-22 02:03:26,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981006404] [2020-08-22 02:03:26,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:03:26,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 02:03:26,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282791761] [2020-08-22 02:03:26,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 02:03:26,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:03:26,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 02:03:26,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-08-22 02:03:26,605 INFO L87 Difference]: Start difference. First operand 2826 states and 3547 transitions. Second operand 15 states. [2020-08-22 02:03:27,268 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:03:27,522 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:03:27,766 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:03:28,331 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:03:28,667 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:03:28,967 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:03:30,931 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:03:31,307 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:03:34,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:03:34,733 INFO L93 Difference]: Finished difference Result 5813 states and 7558 transitions. [2020-08-22 02:03:34,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-08-22 02:03:34,734 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 175 [2020-08-22 02:03:34,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:03:34,751 INFO L225 Difference]: With dead ends: 5813 [2020-08-22 02:03:34,752 INFO L226 Difference]: Without dead ends: 3015 [2020-08-22 02:03:34,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1448 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=695, Invalid=3727, Unknown=0, NotChecked=0, Total=4422 [2020-08-22 02:03:34,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3015 states. [2020-08-22 02:03:35,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3015 to 2662. [2020-08-22 02:03:35,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2662 states. [2020-08-22 02:03:35,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2662 states to 2662 states and 3098 transitions. [2020-08-22 02:03:35,301 INFO L78 Accepts]: Start accepts. Automaton has 2662 states and 3098 transitions. Word has length 175 [2020-08-22 02:03:35,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:03:35,302 INFO L479 AbstractCegarLoop]: Abstraction has 2662 states and 3098 transitions. [2020-08-22 02:03:35,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 02:03:35,303 INFO L276 IsEmpty]: Start isEmpty. Operand 2662 states and 3098 transitions. [2020-08-22 02:03:35,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-08-22 02:03:35,311 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:03:35,311 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 02:03:35,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 02:03:35,312 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:03:35,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:03:35,312 INFO L82 PathProgramCache]: Analyzing trace with hash -2128517555, now seen corresponding path program 1 times [2020-08-22 02:03:35,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:03:35,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139555725] [2020-08-22 02:03:35,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:03:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:35,697 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:03:35,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:03:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:35,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:03:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:35,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:03:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:35,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:03:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:35,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:03:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:35,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:03:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:35,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:03:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:35,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:03:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:35,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:03:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:35,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:35,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:35,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:35,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:35,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:35,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:03:35,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:35,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:03:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:35,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 02:03:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:35,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:03:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:35,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 02:03:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:35,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-22 02:03:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:35,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:03:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:35,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 02:03:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:35,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:35,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:35,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:35,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:35,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:35,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:03:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:35,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:03:35,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:35,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-22 02:03:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:35,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-22 02:03:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:35,940 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-08-22 02:03:35,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139555725] [2020-08-22 02:03:35,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:03:35,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 02:03:35,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536041606] [2020-08-22 02:03:35,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 02:03:35,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:03:35,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 02:03:35,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-22 02:03:35,948 INFO L87 Difference]: Start difference. First operand 2662 states and 3098 transitions. Second operand 10 states. [2020-08-22 02:03:37,321 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:03:39,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:03:39,293 INFO L93 Difference]: Finished difference Result 3277 states and 3955 transitions. [2020-08-22 02:03:39,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-22 02:03:39,298 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 170 [2020-08-22 02:03:39,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:03:39,305 INFO L225 Difference]: With dead ends: 3277 [2020-08-22 02:03:39,306 INFO L226 Difference]: Without dead ends: 1158 [2020-08-22 02:03:39,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 02:03:39,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2020-08-22 02:03:39,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 923. [2020-08-22 02:03:39,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 923 states. [2020-08-22 02:03:39,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1059 transitions. [2020-08-22 02:03:39,503 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1059 transitions. Word has length 170 [2020-08-22 02:03:39,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:03:39,504 INFO L479 AbstractCegarLoop]: Abstraction has 923 states and 1059 transitions. [2020-08-22 02:03:39,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 02:03:39,504 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1059 transitions. [2020-08-22 02:03:39,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-08-22 02:03:39,615 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:03:39,615 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:03:39,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 02:03:39,615 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:03:39,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:03:39,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1897710765, now seen corresponding path program 1 times [2020-08-22 02:03:39,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:03:39,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289975711] [2020-08-22 02:03:39,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:03:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:39,925 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:03:39,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:03:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:39,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:03:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:39,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:03:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:39,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:03:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:39,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:03:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:39,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:03:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:39,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:03:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:03:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:03:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:03:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:03:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 02:03:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:03:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 02:03:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 02:03:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 02:03:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:03:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:03:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:03:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:03:40,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:03:40,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-22 02:03:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-22 02:03:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,318 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-08-22 02:03:40,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289975711] [2020-08-22 02:03:40,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:03:40,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-22 02:03:40,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547626836] [2020-08-22 02:03:40,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 02:03:40,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:03:40,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 02:03:40,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-22 02:03:40,322 INFO L87 Difference]: Start difference. First operand 923 states and 1059 transitions. Second operand 19 states. [2020-08-22 02:03:41,751 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:03:42,102 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 02:03:42,379 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:03:42,625 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:03:43,309 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189