/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_spec4_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 04:31:33,397 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:31:33,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:31:33,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:31:33,440 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:31:33,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:31:33,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:31:33,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:31:33,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:31:33,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:31:33,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:31:33,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:31:33,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:31:33,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:31:33,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:31:33,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:31:33,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:31:33,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:31:33,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:31:33,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:31:33,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:31:33,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:31:33,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:31:33,484 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:31:33,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:31:33,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:31:33,502 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:31:33,503 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:31:33,503 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:31:33,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:31:33,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:31:33,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:31:33,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:31:33,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:31:33,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:31:33,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:31:33,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:31:33,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:31:33,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:31:33,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:31:33,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:31:33,516 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 04:31:33,553 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:31:33,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:31:33,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:31:33,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:31:33,555 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:31:33,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:31:33,556 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:31:33,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:31:33,556 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:31:33,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:31:33,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:31:33,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:31:33,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:31:33,558 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:31:33,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:31:33,558 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:31:33,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:31:33,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:31:33,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:31:33,559 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:31:33,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:31:33,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:31:33,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:31:33,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:31:33,560 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:31:33,561 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:31:33,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:31:33,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:31:33,561 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:31:33,561 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=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-08-22 04:31:33,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:31:33,891 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:31:33,895 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:31:33,896 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:31:33,897 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:31:33,897 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product36.cil.c [2020-08-22 04:31:33,961 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/acc56dfff/d7865858aa2b407895f5bde4c58d7d16/FLAG02670934b [2020-08-22 04:31:34,502 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:31:34,503 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product36.cil.c [2020-08-22 04:31:34,518 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/acc56dfff/d7865858aa2b407895f5bde4c58d7d16/FLAG02670934b [2020-08-22 04:31:34,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/acc56dfff/d7865858aa2b407895f5bde4c58d7d16 [2020-08-22 04:31:34,761 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:31:34,763 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:31:34,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:31:34,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:31:34,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:31:34,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:31:34" (1/1) ... [2020-08-22 04:31:34,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69168dbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:31:34, skipping insertion in model container [2020-08-22 04:31:34,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:31:34" (1/1) ... [2020-08-22 04:31:34,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:31:34,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:31:35,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:31:35,343 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:31:35,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:31:35,451 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:31:35,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:31:35 WrapperNode [2020-08-22 04:31:35,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:31:35,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:31:35,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:31:35,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:31:35,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:31:35" (1/1) ... [2020-08-22 04:31:35,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:31:35" (1/1) ... [2020-08-22 04:31:35,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:31:35" (1/1) ... [2020-08-22 04:31:35,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:31:35" (1/1) ... [2020-08-22 04:31:35,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:31:35" (1/1) ... [2020-08-22 04:31:35,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:31:35" (1/1) ... [2020-08-22 04:31:35,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:31:35" (1/1) ... [2020-08-22 04:31:35,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:31:35,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:31:35,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:31:35,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:31:35,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:31:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:31:35,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:31:35,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:31:35,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 04:31:35,618 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 04:31:35,619 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 04:31:35,619 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 04:31:35,619 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 04:31:35,619 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 04:31:35,619 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 04:31:35,619 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 04:31:35,620 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 04:31:35,620 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 04:31:35,620 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 04:31:35,620 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 04:31:35,620 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 04:31:35,620 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 04:31:35,621 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 04:31:35,621 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 04:31:35,621 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 04:31:35,621 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:31:35,621 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 04:31:35,621 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 04:31:35,622 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 04:31:35,622 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 04:31:35,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 04:31:35,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 04:31:35,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 04:31:35,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 04:31:35,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 04:31:35,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 04:31:35,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 04:31:35,623 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 04:31:35,623 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 04:31:35,623 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 04:31:35,624 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 04:31:35,624 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 04:31:35,624 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 04:31:35,624 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 04:31:35,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 04:31:35,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:31:35,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 04:31:35,625 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 04:31:35,625 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 04:31:35,625 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 04:31:35,625 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 04:31:35,625 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 04:31:35,625 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 04:31:35,626 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 04:31:35,626 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 04:31:35,626 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 04:31:35,626 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 04:31:35,626 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 04:31:35,626 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 04:31:35,627 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 04:31:35,627 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 04:31:35,627 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 04:31:35,627 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 04:31:35,627 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 04:31:35,628 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 04:31:35,628 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 04:31:35,628 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 04:31:35,628 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 04:31:35,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 04:31:35,628 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 04:31:35,629 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 04:31:35,629 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 04:31:35,629 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 04:31:35,629 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 04:31:35,629 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 04:31:35,630 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:31:35,630 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 04:31:35,631 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 04:31:35,631 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 04:31:35,631 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 04:31:35,632 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 04:31:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 04:31:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 04:31:35,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 04:31:35,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 04:31:35,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 04:31:35,636 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 04:31:35,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 04:31:35,637 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 04:31:35,640 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 04:31:35,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 04:31:35,640 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 04:31:35,640 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 04:31:35,641 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 04:31:35,641 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 04:31:35,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:31:35,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 04:31:35,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:31:36,793 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:31:36,793 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 04:31:36,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:31:36 BoogieIcfgContainer [2020-08-22 04:31:36,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:31:36,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:31:36,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:31:36,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:31:36,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:31:34" (1/3) ... [2020-08-22 04:31:36,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28985e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:31:36, skipping insertion in model container [2020-08-22 04:31:36,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:31:35" (2/3) ... [2020-08-22 04:31:36,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28985e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:31:36, skipping insertion in model container [2020-08-22 04:31:36,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:31:36" (3/3) ... [2020-08-22 04:31:36,807 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product36.cil.c [2020-08-22 04:31:36,818 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:31:36,826 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:31:36,840 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:31:36,865 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:31:36,865 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:31:36,865 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:31:36,865 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:31:36,866 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:31:36,866 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:31:36,866 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:31:36,866 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:31:36,889 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states. [2020-08-22 04:31:36,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 04:31:36,900 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:31:36,901 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] [2020-08-22 04:31:36,901 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:31:36,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:31:36,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1806854140, now seen corresponding path program 1 times [2020-08-22 04:31:36,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:31:36,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539806358] [2020-08-22 04:31:36,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:31:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:37,678 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:31:37,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:31:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:37,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:31:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:37,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:31:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:37,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:31:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:37,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:31:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:37,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:31:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:37,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:31:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:37,770 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 04:31:37,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539806358] [2020-08-22 04:31:37,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:31:37,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 04:31:37,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972392410] [2020-08-22 04:31:37,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 04:31:37,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:31:37,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 04:31:37,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 04:31:37,801 INFO L87 Difference]: Start difference. First operand 161 states. Second operand 3 states. [2020-08-22 04:31:38,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:31:38,900 INFO L93 Difference]: Finished difference Result 278 states and 364 transitions. [2020-08-22 04:31:38,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 04:31:38,903 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 04:31:38,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:31:38,918 INFO L225 Difference]: With dead ends: 278 [2020-08-22 04:31:38,918 INFO L226 Difference]: Without dead ends: 151 [2020-08-22 04:31:38,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 04:31:38,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-08-22 04:31:39,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 118. [2020-08-22 04:31:39,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-22 04:31:39,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2020-08-22 04:31:39,007 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 46 [2020-08-22 04:31:39,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:31:39,008 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2020-08-22 04:31:39,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 04:31:39,008 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2020-08-22 04:31:39,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 04:31:39,011 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:31:39,012 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] [2020-08-22 04:31:39,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:31:39,012 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:31:39,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:31:39,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1793827304, now seen corresponding path program 1 times [2020-08-22 04:31:39,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:31:39,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541085664] [2020-08-22 04:31:39,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:31:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:39,382 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:31:39,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:31:39,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:39,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:31:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:39,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:31:39,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:39,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:31:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:39,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:31:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:39,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 04:31:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:39,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 04:31:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:39,455 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 04:31:39,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541085664] [2020-08-22 04:31:39,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:31:39,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:31:39,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24602324] [2020-08-22 04:31:39,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:31:39,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:31:39,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:31:39,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:31:39,460 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand 4 states. [2020-08-22 04:31:39,849 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:31:40,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:31:40,609 INFO L93 Difference]: Finished difference Result 198 states and 241 transitions. [2020-08-22 04:31:40,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 04:31:40,610 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 04:31:40,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:31:40,613 INFO L225 Difference]: With dead ends: 198 [2020-08-22 04:31:40,613 INFO L226 Difference]: Without dead ends: 135 [2020-08-22 04:31:40,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:31:40,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-22 04:31:40,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 109. [2020-08-22 04:31:40,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-22 04:31:40,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2020-08-22 04:31:40,649 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 47 [2020-08-22 04:31:40,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:31:40,650 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2020-08-22 04:31:40,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:31:40,650 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2020-08-22 04:31:40,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 04:31:40,652 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:31:40,652 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 04:31:40,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:31:40,653 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:31:40,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:31:40,653 INFO L82 PathProgramCache]: Analyzing trace with hash 25908157, now seen corresponding path program 1 times [2020-08-22 04:31:40,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:31:40,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466369920] [2020-08-22 04:31:40,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:31:40,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:40,989 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:31:40,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:31:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:41,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:31:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:41,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:31:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:41,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:31:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:41,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:31:41,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:41,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:31:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:41,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:31:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:41,071 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 04:31:41,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466369920] [2020-08-22 04:31:41,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:31:41,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 04:31:41,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359777847] [2020-08-22 04:31:41,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:31:41,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:31:41,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:31:41,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:31:41,074 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand 8 states. [2020-08-22 04:31:41,469 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:31:41,785 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:31:42,045 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:31:42,316 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:31:43,033 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:31:44,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:31:44,440 INFO L93 Difference]: Finished difference Result 378 states and 466 transitions. [2020-08-22 04:31:44,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 04:31:44,442 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-22 04:31:44,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:31:44,448 INFO L225 Difference]: With dead ends: 378 [2020-08-22 04:31:44,448 INFO L226 Difference]: Without dead ends: 293 [2020-08-22 04:31:44,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 04:31:44,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-08-22 04:31:44,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 220. [2020-08-22 04:31:44,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-22 04:31:44,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 262 transitions. [2020-08-22 04:31:44,516 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 262 transitions. Word has length 52 [2020-08-22 04:31:44,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:31:44,517 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 262 transitions. [2020-08-22 04:31:44,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:31:44,517 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 262 transitions. [2020-08-22 04:31:44,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 04:31:44,520 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:31:44,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:31:44,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:31:44,521 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:31:44,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:31:44,521 INFO L82 PathProgramCache]: Analyzing trace with hash -388118307, now seen corresponding path program 1 times [2020-08-22 04:31:44,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:31:44,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615952012] [2020-08-22 04:31:44,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:31:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:44,894 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:31:44,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:31:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:44,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:31:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:44,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:31:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:44,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:31:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:44,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:31:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:44,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 04:31:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:44,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 04:31:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:44,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:31:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:44,987 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 04:31:44,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615952012] [2020-08-22 04:31:44,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:31:44,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 04:31:44,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382759720] [2020-08-22 04:31:44,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 04:31:44,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:31:44,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 04:31:44,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:31:44,990 INFO L87 Difference]: Start difference. First operand 220 states and 262 transitions. Second operand 12 states. [2020-08-22 04:31:45,484 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:31:45,785 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:31:46,055 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:31:46,300 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:31:46,857 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:31:47,648 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:31:47,989 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:31:48,246 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:31:48,561 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:31:48,834 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:31:49,190 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:31:49,455 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:31:49,679 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:31:51,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:31:51,155 INFO L93 Difference]: Finished difference Result 881 states and 1222 transitions. [2020-08-22 04:31:51,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 04:31:51,156 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-22 04:31:51,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:31:51,168 INFO L225 Difference]: With dead ends: 881 [2020-08-22 04:31:51,169 INFO L226 Difference]: Without dead ends: 685 [2020-08-22 04:31:51,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-22 04:31:51,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-08-22 04:31:51,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 592. [2020-08-22 04:31:51,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-08-22 04:31:51,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 744 transitions. [2020-08-22 04:31:51,314 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 744 transitions. Word has length 57 [2020-08-22 04:31:51,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:31:51,315 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 744 transitions. [2020-08-22 04:31:51,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 04:31:51,315 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 744 transitions. [2020-08-22 04:31:51,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 04:31:51,320 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:31:51,320 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] [2020-08-22 04:31:51,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 04:31:51,320 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:31:51,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:31:51,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1713773635, now seen corresponding path program 1 times [2020-08-22 04:31:51,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:31:51,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094011894] [2020-08-22 04:31:51,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:31:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:51,602 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:31:51,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:31:51,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:51,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:31:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:51,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:31:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:51,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:31:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:51,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:31:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:51,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 04:31:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:51,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 04:31:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:51,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 04:31:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:51,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 04:31:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:51,678 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 04:31:51,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094011894] [2020-08-22 04:31:51,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:31:51,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 04:31:51,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438329527] [2020-08-22 04:31:51,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 04:31:51,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:31:51,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 04:31:51,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:31:51,681 INFO L87 Difference]: Start difference. First operand 592 states and 744 transitions. Second operand 6 states. [2020-08-22 04:31:52,030 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:31:53,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:31:53,692 INFO L93 Difference]: Finished difference Result 1481 states and 1983 transitions. [2020-08-22 04:31:53,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 04:31:53,696 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-22 04:31:53,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:31:53,703 INFO L225 Difference]: With dead ends: 1481 [2020-08-22 04:31:53,704 INFO L226 Difference]: Without dead ends: 913 [2020-08-22 04:31:53,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-22 04:31:53,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2020-08-22 04:31:53,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 846. [2020-08-22 04:31:53,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 846 states. [2020-08-22 04:31:53,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1064 transitions. [2020-08-22 04:31:53,867 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1064 transitions. Word has length 61 [2020-08-22 04:31:53,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:31:53,867 INFO L479 AbstractCegarLoop]: Abstraction has 846 states and 1064 transitions. [2020-08-22 04:31:53,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 04:31:53,867 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1064 transitions. [2020-08-22 04:31:53,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-22 04:31:53,871 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:31:53,871 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:53,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 04:31:53,872 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:31:53,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:31:53,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1637256011, now seen corresponding path program 1 times [2020-08-22 04:31:53,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:31:53,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820831259] [2020-08-22 04:31:53,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:31:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:54,146 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:31:54,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:31:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:54,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:31:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:54,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:31:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:54,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:31:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:54,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:31:54,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:54,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:31:54,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:54,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 04:31:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:54,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 04:31:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:54,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:31:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:54,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:31:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:54,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 04:31:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:54,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 04:31:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:54,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 04:31:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:54,298 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 04:31:54,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820831259] [2020-08-22 04:31:54,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:31:54,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 04:31:54,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283103966] [2020-08-22 04:31:54,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:31:54,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:31:54,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:31:54,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:31:54,301 INFO L87 Difference]: Start difference. First operand 846 states and 1064 transitions. Second operand 10 states. [2020-08-22 04:31:54,995 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-22 04:31:55,579 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:31:57,467 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:31:58,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:31:58,959 INFO L93 Difference]: Finished difference Result 1633 states and 2139 transitions. [2020-08-22 04:31:58,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 04:31:58,960 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-22 04:31:58,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:31:58,966 INFO L225 Difference]: With dead ends: 1633 [2020-08-22 04:31:58,967 INFO L226 Difference]: Without dead ends: 1048 [2020-08-22 04:31:58,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-22 04:31:58,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2020-08-22 04:31:59,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 953. [2020-08-22 04:31:59,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2020-08-22 04:31:59,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1176 transitions. [2020-08-22 04:31:59,128 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1176 transitions. Word has length 89 [2020-08-22 04:31:59,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:31:59,129 INFO L479 AbstractCegarLoop]: Abstraction has 953 states and 1176 transitions. [2020-08-22 04:31:59,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:31:59,129 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1176 transitions. [2020-08-22 04:31:59,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-08-22 04:31:59,133 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:31:59,133 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:59,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 04:31:59,133 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:31:59,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:31:59,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1243870907, now seen corresponding path program 1 times [2020-08-22 04:31:59,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:31:59,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677661411] [2020-08-22 04:31:59,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:31:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:59,412 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:31:59,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:31:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:59,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:31:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:59,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:31:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:59,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:31:59,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:59,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:31:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:59,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 04:31:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:59,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:31:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:59,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:31:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:59,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:31:59,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:59,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:31:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:59,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 04:31:59,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:59,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:31:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:59,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 04:31:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:59,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 04:31:59,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:59,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 04:31:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:59,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:31:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:59,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 04:31:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:59,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 04:31:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:59,608 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 04:31:59,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677661411] [2020-08-22 04:31:59,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:31:59,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 04:31:59,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775377517] [2020-08-22 04:31:59,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 04:31:59,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:31:59,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 04:31:59,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:31:59,621 INFO L87 Difference]: Start difference. First operand 953 states and 1176 transitions. Second operand 12 states. [2020-08-22 04:32:00,195 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:00,447 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:00,683 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:01,386 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:01,652 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:01,899 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:02,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:32:02,900 INFO L93 Difference]: Finished difference Result 1984 states and 2566 transitions. [2020-08-22 04:32:02,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 04:32:02,901 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 115 [2020-08-22 04:32:02,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:32:02,909 INFO L225 Difference]: With dead ends: 1984 [2020-08-22 04:32:02,910 INFO L226 Difference]: Without dead ends: 1055 [2020-08-22 04:32:02,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 04:32:02,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2020-08-22 04:32:03,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 953. [2020-08-22 04:32:03,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2020-08-22 04:32:03,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1172 transitions. [2020-08-22 04:32:03,100 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1172 transitions. Word has length 115 [2020-08-22 04:32:03,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:32:03,100 INFO L479 AbstractCegarLoop]: Abstraction has 953 states and 1172 transitions. [2020-08-22 04:32:03,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 04:32:03,100 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1172 transitions. [2020-08-22 04:32:03,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-08-22 04:32:03,103 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:03,104 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:32:03,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 04:32:03,104 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:03,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:03,104 INFO L82 PathProgramCache]: Analyzing trace with hash 289930749, now seen corresponding path program 1 times [2020-08-22 04:32:03,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:03,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552702355] [2020-08-22 04:32:03,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:03,359 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:32:03,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:32:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:03,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:03,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:32:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:03,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:03,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:32:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:03,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 04:32:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:03,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:03,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:03,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:03,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:32:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:03,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 04:32:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:03,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:03,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 04:32:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:03,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 04:32:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:03,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 04:32:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:03,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:03,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 04:32:03,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:03,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 04:32:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:03,523 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 04:32:03,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552702355] [2020-08-22 04:32:03,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:32:03,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 04:32:03,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383552031] [2020-08-22 04:32:03,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:32:03,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:32:03,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:32:03,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:32:03,527 INFO L87 Difference]: Start difference. First operand 953 states and 1172 transitions. Second operand 10 states. [2020-08-22 04:32:04,806 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:05,077 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:32:05,358 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:05,591 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:06,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:32:06,309 INFO L93 Difference]: Finished difference Result 1803 states and 2279 transitions. [2020-08-22 04:32:06,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 04:32:06,309 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 115 [2020-08-22 04:32:06,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:32:06,315 INFO L225 Difference]: With dead ends: 1803 [2020-08-22 04:32:06,316 INFO L226 Difference]: Without dead ends: 874 [2020-08-22 04:32:06,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 04:32:06,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2020-08-22 04:32:06,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 822. [2020-08-22 04:32:06,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 822 states. [2020-08-22 04:32:06,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 993 transitions. [2020-08-22 04:32:06,491 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 993 transitions. Word has length 115 [2020-08-22 04:32:06,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:32:06,493 INFO L479 AbstractCegarLoop]: Abstraction has 822 states and 993 transitions. [2020-08-22 04:32:06,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:32:06,493 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 993 transitions. [2020-08-22 04:32:06,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-08-22 04:32:06,497 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:06,497 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:32:06,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 04:32:06,497 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:06,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:06,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1415201690, now seen corresponding path program 1 times [2020-08-22 04:32:06,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:06,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124781263] [2020-08-22 04:32:06,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:06,884 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:32:06,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:32:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:06,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:06,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:32:06,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:06,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:06,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:32:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:06,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:32:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:06,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 04:32:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:06,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:06,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:06,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:06,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:32:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:06,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 04:32:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:07,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:07,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 04:32:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:07,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 04:32:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:07,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:07,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:07,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 04:32:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:07,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 04:32:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:07,083 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 04:32:07,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124781263] [2020-08-22 04:32:07,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:32:07,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 04:32:07,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534645899] [2020-08-22 04:32:07,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 04:32:07,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:32:07,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 04:32:07,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:32:07,085 INFO L87 Difference]: Start difference. First operand 822 states and 993 transitions. Second operand 12 states. [2020-08-22 04:32:07,589 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:08,452 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:32:08,741 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:32:08,992 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:32:09,221 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:32:09,452 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:32:09,819 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:10,395 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:10,654 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:32:10,920 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:32:12,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:32:12,424 INFO L93 Difference]: Finished difference Result 2004 states and 2576 transitions. [2020-08-22 04:32:12,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 04:32:12,426 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 115 [2020-08-22 04:32:12,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:32:12,434 INFO L225 Difference]: With dead ends: 2004 [2020-08-22 04:32:12,434 INFO L226 Difference]: Without dead ends: 1355 [2020-08-22 04:32:12,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-08-22 04:32:12,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2020-08-22 04:32:12,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1183. [2020-08-22 04:32:12,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1183 states. [2020-08-22 04:32:12,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1447 transitions. [2020-08-22 04:32:12,643 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1447 transitions. Word has length 115 [2020-08-22 04:32:12,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:32:12,644 INFO L479 AbstractCegarLoop]: Abstraction has 1183 states and 1447 transitions. [2020-08-22 04:32:12,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 04:32:12,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1447 transitions. [2020-08-22 04:32:12,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-22 04:32:12,650 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:12,650 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:32:12,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 04:32:12,650 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:12,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:12,651 INFO L82 PathProgramCache]: Analyzing trace with hash -182454868, now seen corresponding path program 1 times [2020-08-22 04:32:12,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:12,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872417117] [2020-08-22 04:32:12,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:12,909 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:32:12,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:32:12,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:12,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:12,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:12,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:32:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:12,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:12,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:12,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:32:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:12,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:32:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:12,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 04:32:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:13,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:13,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:13,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:13,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:32:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:13,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 04:32:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:13,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:13,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 04:32:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:13,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:13,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:13,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:13,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 04:32:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:13,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:13,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 04:32:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:13,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 04:32:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:13,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 04:32:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:13,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-22 04:32:13,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:13,134 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-22 04:32:13,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872417117] [2020-08-22 04:32:13,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:32:13,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 04:32:13,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607961478] [2020-08-22 04:32:13,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 04:32:13,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:32:13,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 04:32:13,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-22 04:32:13,139 INFO L87 Difference]: Start difference. First operand 1183 states and 1447 transitions. Second operand 13 states. [2020-08-22 04:32:13,664 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:13,930 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:14,156 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:14,628 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:32:15,573 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:32:17,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:32:17,041 INFO L93 Difference]: Finished difference Result 2158 states and 2710 transitions. [2020-08-22 04:32:17,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 04:32:17,043 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 148 [2020-08-22 04:32:17,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:32:17,051 INFO L225 Difference]: With dead ends: 2158 [2020-08-22 04:32:17,051 INFO L226 Difference]: Without dead ends: 1199 [2020-08-22 04:32:17,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2020-08-22 04:32:17,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2020-08-22 04:32:17,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 877. [2020-08-22 04:32:17,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2020-08-22 04:32:17,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1022 transitions. [2020-08-22 04:32:17,223 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1022 transitions. Word has length 148 [2020-08-22 04:32:17,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:32:17,223 INFO L479 AbstractCegarLoop]: Abstraction has 877 states and 1022 transitions. [2020-08-22 04:32:17,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 04:32:17,224 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1022 transitions. [2020-08-22 04:32:17,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-22 04:32:17,227 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:17,227 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:32:17,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 04:32:17,227 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:17,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:17,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1037640305, now seen corresponding path program 2 times [2020-08-22 04:32:17,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:17,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140177887] [2020-08-22 04:32:17,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:17,560 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:32:17,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:32:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:17,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:17,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:32:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:17,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:17,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:32:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:17,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:32:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:17,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 04:32:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:17,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:17,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:17,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:17,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:17,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:32:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:17,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 04:32:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:17,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:17,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 04:32:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:17,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:17,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:17,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:17,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 04:32:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:17,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:17,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 04:32:17,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:17,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-22 04:32:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:17,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 04:32:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:17,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:17,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 04:32:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:17,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-22 04:32:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:17,757 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 39 proven. 18 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-08-22 04:32:17,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140177887] [2020-08-22 04:32:17,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:32:17,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 04:32:17,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255096158] [2020-08-22 04:32:17,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 04:32:17,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:32:17,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 04:32:17,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-22 04:32:17,761 INFO L87 Difference]: Start difference. First operand 877 states and 1022 transitions. Second operand 14 states. [2020-08-22 04:32:18,209 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:32:18,867 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:32:19,425 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:19,735 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:32:19,996 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:32:20,267 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:20,594 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:32:20,863 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:32:22,191 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:32:22,433 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:23,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:32:23,370 INFO L93 Difference]: Finished difference Result 2124 states and 2708 transitions. [2020-08-22 04:32:23,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 04:32:23,370 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 155 [2020-08-22 04:32:23,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:32:23,378 INFO L225 Difference]: With dead ends: 2124 [2020-08-22 04:32:23,378 INFO L226 Difference]: Without dead ends: 1420 [2020-08-22 04:32:23,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 57 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2020-08-22 04:32:23,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2020-08-22 04:32:23,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 870. [2020-08-22 04:32:23,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 870 states. [2020-08-22 04:32:23,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1022 transitions. [2020-08-22 04:32:23,651 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1022 transitions. Word has length 155 [2020-08-22 04:32:23,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:32:23,652 INFO L479 AbstractCegarLoop]: Abstraction has 870 states and 1022 transitions. [2020-08-22 04:32:23,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 04:32:23,652 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1022 transitions. [2020-08-22 04:32:23,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-22 04:32:23,655 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:23,655 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-22 04:32:23,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 04:32:23,656 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:23,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:23,656 INFO L82 PathProgramCache]: Analyzing trace with hash 59332245, now seen corresponding path program 3 times [2020-08-22 04:32:23,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:23,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611047717] [2020-08-22 04:32:23,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 04:32:23,760 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 04:32:23,760 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 04:32:23,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 04:32:23,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:32:23 BoogieIcfgContainer [2020-08-22 04:32:23,811 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 04:32:23,812 INFO L168 Benchmark]: Toolchain (without parser) took 49049.87 ms. Allocated memory was 145.8 MB in the beginning and 749.2 MB in the end (delta: 603.5 MB). Free memory was 101.0 MB in the beginning and 656.7 MB in the end (delta: -555.7 MB). Peak memory consumption was 47.8 MB. Max. memory is 7.1 GB. [2020-08-22 04:32:23,813 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 04:32:23,813 INFO L168 Benchmark]: CACSL2BoogieTranslator took 685.90 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 100.8 MB in the beginning and 170.0 MB in the end (delta: -69.2 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-08-22 04:32:23,814 INFO L168 Benchmark]: Boogie Preprocessor took 97.25 ms. Allocated memory is still 202.4 MB. Free memory was 170.0 MB in the beginning and 165.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-22 04:32:23,814 INFO L168 Benchmark]: RCFGBuilder took 1248.29 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 165.8 MB in the beginning and 196.8 MB in the end (delta: -31.0 MB). Peak memory consumption was 84.0 MB. Max. memory is 7.1 GB. [2020-08-22 04:32:23,815 INFO L168 Benchmark]: TraceAbstraction took 47010.91 ms. Allocated memory was 234.9 MB in the beginning and 749.2 MB in the end (delta: 514.3 MB). Free memory was 196.8 MB in the beginning and 656.7 MB in the end (delta: -459.8 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2020-08-22 04:32:23,818 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 685.90 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 100.8 MB in the beginning and 170.0 MB in the end (delta: -69.2 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.25 ms. Allocated memory is still 202.4 MB. Free memory was 170.0 MB in the beginning and 165.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1248.29 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 165.8 MB in the beginning and 196.8 MB in the end (delta: -31.0 MB). Peak memory consumption was 84.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 47010.91 ms. Allocated memory was 234.9 MB in the beginning and 749.2 MB in the end (delta: 514.3 MB). Free memory was 196.8 MB in the beginning and 656.7 MB in the end (delta: -459.8 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 437]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L123] int pumpRunning = 0; [L124] int systemActive = 1; [L299] int cleanupTimeShifts = 4; [L611] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L809] int waterLevel = 1; [L810] int methaneLevelCritical = 0; [L375] int retValue_acc ; [L376] int tmp ; [L380] FCALL select_helpers() [L381] FCALL select_features() [L382] CALL, EXPR valid_product() [L424] int retValue_acc ; [L427] retValue_acc = 1 [L428] return (retValue_acc); [L382] RET, EXPR valid_product() [L382] tmp = valid_product() [L384] COND TRUE \read(tmp) [L386] FCALL setup() [L387] CALL runTest() [L366] CALL test() [L47] int splverifierCounter ; [L48] int tmp ; [L49] int tmp___0 ; [L50] int tmp___1 ; [L51] int tmp___2 ; [L54] splverifierCounter = 0 [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND TRUE \read(tmp) [L68] CALL waterRise() [L827] COND TRUE waterLevel < 2 [L828] waterLevel = waterLevel + 1 [L68] RET waterRise() [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___1)) [L103] CALL timeShift() [L131] COND FALSE !(\read(pumpRunning)) [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L160] int tmp ; [L163] COND TRUE ! pumpRunning [L165] CALL, EXPR isHighWaterLevel() [L257] int retValue_acc ; [L258] int tmp ; [L259] int tmp___0 ; [L263] CALL, EXPR isHighWaterSensorDry() [L889] int retValue_acc ; [L892] COND FALSE !(waterLevel < 2) [L896] retValue_acc = 0 [L897] return (retValue_acc); [L263] RET, EXPR isHighWaterSensorDry() [L263] tmp = isHighWaterSensorDry() [L265] COND FALSE !(\read(tmp)) [L268] tmp___0 = 1 [L270] retValue_acc = tmp___0 [L271] return (retValue_acc); [L165] RET, EXPR isHighWaterLevel() [L165] tmp = isHighWaterLevel() [L167] COND TRUE \read(tmp) [L169] CALL activatePump() [L188] pumpRunning = 1 [L169] RET activatePump() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification4_spec__1() [L904] int tmp ; [L905] int tmp___0 ; [L909] CALL, EXPR getWaterLevel() [L880] int retValue_acc ; [L883] retValue_acc = waterLevel [L884] return (retValue_acc); [L909] RET, EXPR getWaterLevel() [L909] tmp = getWaterLevel() [L911] COND FALSE !(tmp == 0) [L146] RET __utac_acc__Specification4_spec__1() [L103] RET timeShift() [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___1)) [L103] CALL timeShift() [L131] COND TRUE \read(pumpRunning) [L133] CALL lowerWaterLevel() [L815] COND TRUE waterLevel > 0 [L816] waterLevel = waterLevel - 1 [L133] RET lowerWaterLevel() [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L160] int tmp ; [L163] COND FALSE !(! pumpRunning) [L178] FCALL processEnvironment__wrappee__base() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification4_spec__1() [L904] int tmp ; [L905] int tmp___0 ; [L909] CALL, EXPR getWaterLevel() [L880] int retValue_acc ; [L883] retValue_acc = waterLevel [L884] return (retValue_acc); [L909] RET, EXPR getWaterLevel() [L909] tmp = getWaterLevel() [L911] COND FALSE !(tmp == 0) [L146] RET __utac_acc__Specification4_spec__1() [L103] RET timeShift() [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___1)) [L103] CALL timeShift() [L131] COND TRUE \read(pumpRunning) [L133] CALL lowerWaterLevel() [L815] COND TRUE waterLevel > 0 [L816] waterLevel = waterLevel - 1 [L133] RET lowerWaterLevel() [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L160] int tmp ; [L163] COND FALSE !(! pumpRunning) [L178] FCALL processEnvironment__wrappee__base() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification4_spec__1() [L904] int tmp ; [L905] int tmp___0 ; [L909] CALL, EXPR getWaterLevel() [L880] int retValue_acc ; [L883] retValue_acc = waterLevel [L884] return (retValue_acc); [L909] RET, EXPR getWaterLevel() [L909] tmp = getWaterLevel() [L911] COND TRUE tmp == 0 [L913] CALL, EXPR isPumpRunning() [L212] int retValue_acc ; [L215] retValue_acc = pumpRunning [L216] return (retValue_acc); [L913] RET, EXPR isPumpRunning() [L913] tmp___0 = isPumpRunning() [L915] COND TRUE \read(tmp___0) [L917] CALL __automaton_fail() [L437] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 46.9s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 39.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1364 SDtfs, 3563 SDslu, 1920 SDs, 0 SdLazy, 9423 SolverSat, 2711 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 547 GetRequests, 348 SyntacticMatches, 11 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 880 ImplicationChecksByTransitivity, 17.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1183occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 1585 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 1151 NumberOfCodeBlocks, 1151 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 989 ConstructedInterpolants, 0 QuantifiedInterpolants, 375157 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 224/262 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...