/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:09:17,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:09:17,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:09:17,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:09:17,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:09:17,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:09:17,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:09:17,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:09:17,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:09:17,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:09:17,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:09:17,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:09:17,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:09:17,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:09:17,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:09:17,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:09:17,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:09:17,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:09:17,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:09:17,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:09:17,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:09:17,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:09:17,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:09:17,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:09:17,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:09:17,374 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:09:17,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:09:17,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:09:17,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:09:17,377 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:09:17,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:09:17,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:09:17,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:09:17,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:09:17,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:09:17,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:09:17,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:09:17,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:09:17,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:09:17,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:09:17,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:09:17,385 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 00:09:17,408 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:09:17,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:09:17,409 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:09:17,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:09:17,410 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:09:17,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:09:17,410 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:09:17,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:09:17,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:09:17,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:09:17,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:09:17,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:09:17,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:09:17,412 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:09:17,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:09:17,412 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:09:17,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:09:17,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:09:17,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:09:17,413 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:09:17,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:09:17,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:09:17,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:09:17,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:09:17,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:09:17,414 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:09:17,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:09:17,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:09:17,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:09:17,415 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:09:17,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:09:17,752 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:09:17,757 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:09:17,760 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:09:17,761 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:09:17,762 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product61.cil.c [2020-08-19 00:09:17,840 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c6cf28d7/736d0ce6c8c544f08dae434f4ce00ea5/FLAGf9d514526 [2020-08-19 00:09:18,397 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:09:18,397 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product61.cil.c [2020-08-19 00:09:18,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c6cf28d7/736d0ce6c8c544f08dae434f4ce00ea5/FLAGf9d514526 [2020-08-19 00:09:18,746 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c6cf28d7/736d0ce6c8c544f08dae434f4ce00ea5 [2020-08-19 00:09:18,755 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:09:18,756 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:09:18,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:09:18,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:09:18,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:09:18,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:09:18" (1/1) ... [2020-08-19 00:09:18,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a91d473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:09:18, skipping insertion in model container [2020-08-19 00:09:18,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:09:18" (1/1) ... [2020-08-19 00:09:18,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:09:18,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:09:19,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:09:19,341 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:09:19,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:09:19,454 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:09:19,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:09:19 WrapperNode [2020-08-19 00:09:19,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:09:19,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:09:19,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:09:19,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:09:19,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:09:19" (1/1) ... [2020-08-19 00:09:19,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:09:19" (1/1) ... [2020-08-19 00:09:19,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:09:19" (1/1) ... [2020-08-19 00:09:19,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:09:19" (1/1) ... [2020-08-19 00:09:19,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:09:19" (1/1) ... [2020-08-19 00:09:19,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:09:19" (1/1) ... [2020-08-19 00:09:19,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:09:19" (1/1) ... [2020-08-19 00:09:19,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:09:19,546 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:09:19,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:09:19,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:09:19,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:09:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:09:19,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:09:19,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:09:19,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 00:09:19,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 00:09:19,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 00:09:19,620 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 00:09:19,620 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 00:09:19,620 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 00:09:19,620 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 00:09:19,621 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:09:19,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 00:09:19,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 00:09:19,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 00:09:19,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 00:09:19,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 00:09:19,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 00:09:19,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 00:09:19,622 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 00:09:19,622 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 00:09:19,622 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 00:09:19,622 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 00:09:19,623 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 00:09:19,623 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 00:09:19,623 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 00:09:19,623 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 00:09:19,623 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 00:09:19,623 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 00:09:19,624 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 00:09:19,624 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 00:09:19,624 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 00:09:19,624 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 00:09:19,624 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 00:09:19,624 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:09:19,625 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 00:09:19,625 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 00:09:19,625 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 00:09:19,625 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 00:09:19,625 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 00:09:19,625 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 00:09:19,625 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 00:09:19,626 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 00:09:19,626 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 00:09:19,626 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 00:09:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:09:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:09:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 00:09:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 00:09:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 00:09:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 00:09:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 00:09:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 00:09:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 00:09:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 00:09:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 00:09:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 00:09:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 00:09:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 00:09:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 00:09:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 00:09:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 00:09:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 00:09:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 00:09:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 00:09:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:09:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 00:09:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:09:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:09:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 00:09:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:09:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:09:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:09:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:09:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 00:09:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:09:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 00:09:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 00:09:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:09:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 00:09:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 00:09:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:09:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 00:09:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 00:09:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 00:09:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 00:09:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 00:09:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 00:09:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 00:09:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 00:09:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 00:09:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 00:09:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 00:09:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 00:09:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:09:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 00:09:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 00:09:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 00:09:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 00:09:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:09:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 00:09:19,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:09:20,771 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:09:20,771 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 00:09:20,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:09:20 BoogieIcfgContainer [2020-08-19 00:09:20,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:09:20,779 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:09:20,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:09:20,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:09:20,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:09:18" (1/3) ... [2020-08-19 00:09:20,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d031b1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:09:20, skipping insertion in model container [2020-08-19 00:09:20,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:09:19" (2/3) ... [2020-08-19 00:09:20,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d031b1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:09:20, skipping insertion in model container [2020-08-19 00:09:20,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:09:20" (3/3) ... [2020-08-19 00:09:20,786 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product61.cil.c [2020-08-19 00:09:20,796 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:09:20,804 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:09:20,814 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:09:20,840 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:09:20,840 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:09:20,840 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:09:20,841 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:09:20,841 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:09:20,841 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:09:20,842 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:09:20,842 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:09:20,865 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2020-08-19 00:09:20,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 00:09:20,876 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:09:20,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:09:20,877 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:09:20,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:09:20,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1299073538, now seen corresponding path program 1 times [2020-08-19 00:09:20,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:09:20,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299708990] [2020-08-19 00:09:20,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:09:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:21,584 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:09:21,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:09:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:21,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:09:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:21,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:09:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:21,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:09:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:21,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:09:21,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:21,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:09:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:21,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 00:09:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:21,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 00:09:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:21,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:09:21,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299708990] [2020-08-19 00:09:21,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:09:21,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:09:21,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069396152] [2020-08-19 00:09:21,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:09:21,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:09:21,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:09:21,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:09:21,761 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 4 states. [2020-08-19 00:09:23,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:09:23,124 INFO L93 Difference]: Finished difference Result 344 states and 448 transitions. [2020-08-19 00:09:23,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 00:09:23,128 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 00:09:23,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:09:23,150 INFO L225 Difference]: With dead ends: 344 [2020-08-19 00:09:23,150 INFO L226 Difference]: Without dead ends: 190 [2020-08-19 00:09:23,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:09:23,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-08-19 00:09:23,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 155. [2020-08-19 00:09:23,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-19 00:09:23,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 185 transitions. [2020-08-19 00:09:23,304 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 185 transitions. Word has length 51 [2020-08-19 00:09:23,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:09:23,306 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 185 transitions. [2020-08-19 00:09:23,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:09:23,307 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 185 transitions. [2020-08-19 00:09:23,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 00:09:23,310 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:09:23,311 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:09:23,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:09:23,311 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:09:23,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:09:23,312 INFO L82 PathProgramCache]: Analyzing trace with hash -155172335, now seen corresponding path program 1 times [2020-08-19 00:09:23,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:09:23,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569880064] [2020-08-19 00:09:23,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:09:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:23,682 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:09:23,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:09:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:23,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:09:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:23,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:09:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:23,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:09:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:23,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:09:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:23,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:09:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:23,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:09:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:23,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:09:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:23,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:09:23,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569880064] [2020-08-19 00:09:23,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:09:23,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 00:09:23,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721705401] [2020-08-19 00:09:23,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 00:09:23,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:09:23,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 00:09:23,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:09:23,775 INFO L87 Difference]: Start difference. First operand 155 states and 185 transitions. Second operand 5 states. [2020-08-19 00:09:24,362 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:09:25,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:09:25,482 INFO L93 Difference]: Finished difference Result 289 states and 359 transitions. [2020-08-19 00:09:25,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 00:09:25,483 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 00:09:25,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:09:25,487 INFO L225 Difference]: With dead ends: 289 [2020-08-19 00:09:25,487 INFO L226 Difference]: Without dead ends: 180 [2020-08-19 00:09:25,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:09:25,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-08-19 00:09:25,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 146. [2020-08-19 00:09:25,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-19 00:09:25,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 173 transitions. [2020-08-19 00:09:25,538 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 173 transitions. Word has length 52 [2020-08-19 00:09:25,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:09:25,538 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 173 transitions. [2020-08-19 00:09:25,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 00:09:25,538 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 173 transitions. [2020-08-19 00:09:25,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-19 00:09:25,541 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:09:25,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:09:25,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:09:25,542 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:09:25,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:09:25,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1504957008, now seen corresponding path program 1 times [2020-08-19 00:09:25,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:09:25,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684744750] [2020-08-19 00:09:25,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:09:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:25,866 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:09:25,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:09:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:25,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:09:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:25,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:09:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:25,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:09:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:25,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:09:25,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:25,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:09:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:25,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 00:09:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:25,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 00:09:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:25,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:09:25,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684744750] [2020-08-19 00:09:25,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:09:25,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:09:25,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132226116] [2020-08-19 00:09:25,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:09:25,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:09:25,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:09:25,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:09:25,956 INFO L87 Difference]: Start difference. First operand 146 states and 173 transitions. Second operand 9 states. [2020-08-19 00:09:26,388 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:09:26,709 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:26,974 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:27,219 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:28,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:09:28,788 INFO L93 Difference]: Finished difference Result 298 states and 374 transitions. [2020-08-19 00:09:28,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 00:09:28,792 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-19 00:09:28,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:09:28,795 INFO L225 Difference]: With dead ends: 298 [2020-08-19 00:09:28,795 INFO L226 Difference]: Without dead ends: 180 [2020-08-19 00:09:28,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:09:28,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-08-19 00:09:28,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 146. [2020-08-19 00:09:28,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-19 00:09:28,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 172 transitions. [2020-08-19 00:09:28,832 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 172 transitions. Word has length 56 [2020-08-19 00:09:28,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:09:28,833 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 172 transitions. [2020-08-19 00:09:28,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:09:28,833 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 172 transitions. [2020-08-19 00:09:28,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-19 00:09:28,836 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:09:28,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:09:28,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:09:28,837 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:09:28,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:09:28,838 INFO L82 PathProgramCache]: Analyzing trace with hash -775636071, now seen corresponding path program 1 times [2020-08-19 00:09:28,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:09:28,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010313830] [2020-08-19 00:09:28,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:09:28,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,117 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:09:29,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:09:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:09:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:09:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:09:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:09:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:09:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 00:09:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 00:09:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 00:09:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:29,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:09:29,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010313830] [2020-08-19 00:09:29,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:09:29,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 00:09:29,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604029022] [2020-08-19 00:09:29,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 00:09:29,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:09:29,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 00:09:29,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:09:29,240 INFO L87 Difference]: Start difference. First operand 146 states and 172 transitions. Second operand 7 states. [2020-08-19 00:09:29,605 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:09:30,857 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:09:31,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:09:31,825 INFO L93 Difference]: Finished difference Result 403 states and 508 transitions. [2020-08-19 00:09:31,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 00:09:31,826 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-08-19 00:09:31,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:09:31,830 INFO L225 Difference]: With dead ends: 403 [2020-08-19 00:09:31,830 INFO L226 Difference]: Without dead ends: 285 [2020-08-19 00:09:31,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-19 00:09:31,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-08-19 00:09:31,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 239. [2020-08-19 00:09:31,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-19 00:09:31,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 274 transitions. [2020-08-19 00:09:31,880 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 274 transitions. Word has length 74 [2020-08-19 00:09:31,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:09:31,881 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 274 transitions. [2020-08-19 00:09:31,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 00:09:31,881 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 274 transitions. [2020-08-19 00:09:31,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 00:09:31,884 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:09:31,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:09:31,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:09:31,885 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:09:31,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:09:31,885 INFO L82 PathProgramCache]: Analyzing trace with hash 2094752105, now seen corresponding path program 1 times [2020-08-19 00:09:31,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:09:31,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740277184] [2020-08-19 00:09:31,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:09:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:32,216 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:09:32,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:09:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:32,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:09:32,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:32,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:09:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:32,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:09:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:32,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:09:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:32,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:09:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:32,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 00:09:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:32,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:32,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:32,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:32,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:32,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:09:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:32,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 00:09:32,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:32,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 00:09:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:32,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:09:32,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740277184] [2020-08-19 00:09:32,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:09:32,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:09:32,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230520056] [2020-08-19 00:09:32,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:09:32,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:09:32,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:09:32,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:09:32,401 INFO L87 Difference]: Start difference. First operand 239 states and 274 transitions. Second operand 9 states. [2020-08-19 00:09:32,815 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:09:33,874 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:34,199 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:09:34,929 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:35,155 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:36,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:09:36,444 INFO L93 Difference]: Finished difference Result 708 states and 878 transitions. [2020-08-19 00:09:36,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 00:09:36,445 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-19 00:09:36,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:09:36,450 INFO L225 Difference]: With dead ends: 708 [2020-08-19 00:09:36,450 INFO L226 Difference]: Without dead ends: 497 [2020-08-19 00:09:36,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 00:09:36,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2020-08-19 00:09:36,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 426. [2020-08-19 00:09:36,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-08-19 00:09:36,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 488 transitions. [2020-08-19 00:09:36,578 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 488 transitions. Word has length 88 [2020-08-19 00:09:36,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:09:36,579 INFO L479 AbstractCegarLoop]: Abstraction has 426 states and 488 transitions. [2020-08-19 00:09:36,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:09:36,579 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 488 transitions. [2020-08-19 00:09:36,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 00:09:36,581 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:09:36,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:09:36,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:09:36,581 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:09:36,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:09:36,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1169136517, now seen corresponding path program 1 times [2020-08-19 00:09:36,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:09:36,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064030131] [2020-08-19 00:09:36,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:09:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:36,861 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:09:36,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:09:36,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:36,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:09:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:36,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:09:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:36,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:09:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:36,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:09:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:36,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:09:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:36,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:09:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:36,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:09:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:36,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:36,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:36,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:36,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:36,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:36,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:09:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:36,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 00:09:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:36,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 00:09:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:37,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:09:37,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064030131] [2020-08-19 00:09:37,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:09:37,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 00:09:37,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603197109] [2020-08-19 00:09:37,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:09:37,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:09:37,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:09:37,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:09:37,027 INFO L87 Difference]: Start difference. First operand 426 states and 488 transitions. Second operand 10 states. [2020-08-19 00:09:37,435 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:09:38,749 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:09:39,962 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:40,236 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:40,528 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:40,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:09:40,969 INFO L93 Difference]: Finished difference Result 930 states and 1135 transitions. [2020-08-19 00:09:40,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 00:09:40,971 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-08-19 00:09:40,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:09:40,976 INFO L225 Difference]: With dead ends: 930 [2020-08-19 00:09:40,976 INFO L226 Difference]: Without dead ends: 532 [2020-08-19 00:09:40,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-19 00:09:40,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-08-19 00:09:41,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 425. [2020-08-19 00:09:41,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-08-19 00:09:41,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 485 transitions. [2020-08-19 00:09:41,058 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 485 transitions. Word has length 92 [2020-08-19 00:09:41,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:09:41,059 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 485 transitions. [2020-08-19 00:09:41,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:09:41,059 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 485 transitions. [2020-08-19 00:09:41,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 00:09:41,061 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:09:41,061 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:09:41,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:09:41,062 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:09:41,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:09:41,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1253770304, now seen corresponding path program 1 times [2020-08-19 00:09:41,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:09:41,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484025105] [2020-08-19 00:09:41,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:09:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:41,378 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:09:41,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:09:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:41,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:09:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:41,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:09:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:41,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:09:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:41,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:09:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:41,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:09:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:41,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:09:41,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:41,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:09:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:41,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:41,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:41,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:41,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:41,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:09:41,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:41,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:41,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:41,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:41,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:09:41,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:41,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 00:09:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:41,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 00:09:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:41,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 00:09:41,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484025105] [2020-08-19 00:09:41,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:09:41,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 00:09:41,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836643150] [2020-08-19 00:09:41,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:09:41,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:09:41,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:09:41,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:09:41,634 INFO L87 Difference]: Start difference. First operand 425 states and 485 transitions. Second operand 10 states. [2020-08-19 00:09:42,943 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:09:43,191 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:09:43,447 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:09:43,699 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:09:45,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:09:45,114 INFO L93 Difference]: Finished difference Result 937 states and 1168 transitions. [2020-08-19 00:09:45,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 00:09:45,118 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 108 [2020-08-19 00:09:45,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:09:45,123 INFO L225 Difference]: With dead ends: 937 [2020-08-19 00:09:45,123 INFO L226 Difference]: Without dead ends: 540 [2020-08-19 00:09:45,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:09:45,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2020-08-19 00:09:45,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 435. [2020-08-19 00:09:45,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-08-19 00:09:45,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 495 transitions. [2020-08-19 00:09:45,234 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 495 transitions. Word has length 108 [2020-08-19 00:09:45,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:09:45,235 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 495 transitions. [2020-08-19 00:09:45,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:09:45,235 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 495 transitions. [2020-08-19 00:09:45,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 00:09:45,242 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:09:45,242 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:09:45,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 00:09:45,243 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:09:45,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:09:45,243 INFO L82 PathProgramCache]: Analyzing trace with hash 685391742, now seen corresponding path program 1 times [2020-08-19 00:09:45,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:09:45,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863218287] [2020-08-19 00:09:45,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:09:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,525 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:09:45,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:09:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:09:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:09:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:09:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:09:45,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:09:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:09:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:09:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:45,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:09:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:09:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 00:09:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 00:09:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:45,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 00:09:45,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863218287] [2020-08-19 00:09:45,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:09:45,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 00:09:45,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520749758] [2020-08-19 00:09:45,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 00:09:45,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:09:45,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 00:09:45,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:09:45,716 INFO L87 Difference]: Start difference. First operand 435 states and 495 transitions. Second operand 12 states. [2020-08-19 00:09:46,399 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:09:46,645 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:09:46,884 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:09:47,558 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:09:47,811 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:09:48,048 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:09:49,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:09:49,497 INFO L93 Difference]: Finished difference Result 957 states and 1190 transitions. [2020-08-19 00:09:49,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 00:09:49,498 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-08-19 00:09:49,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:09:49,503 INFO L225 Difference]: With dead ends: 957 [2020-08-19 00:09:49,503 INFO L226 Difference]: Without dead ends: 550 [2020-08-19 00:09:49,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-19 00:09:49,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2020-08-19 00:09:49,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 443. [2020-08-19 00:09:49,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-08-19 00:09:49,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 503 transitions. [2020-08-19 00:09:49,620 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 503 transitions. Word has length 108 [2020-08-19 00:09:49,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:09:49,620 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 503 transitions. [2020-08-19 00:09:49,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 00:09:49,621 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 503 transitions. [2020-08-19 00:09:49,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 00:09:49,622 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:09:49,623 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:09:49,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 00:09:49,623 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:09:49,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:09:49,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1454561757, now seen corresponding path program 1 times [2020-08-19 00:09:49,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:09:49,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853996284] [2020-08-19 00:09:49,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:09:49,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:49,910 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:09:49,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:09:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:49,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:09:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:49,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:09:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:49,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:09:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:49,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:09:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:49,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:09:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:49,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:09:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:49,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:09:49,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:50,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:50,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:50,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:50,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:50,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:09:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:50,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:50,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:50,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:09:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:50,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 00:09:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:50,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 00:09:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:50,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 00:09:50,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853996284] [2020-08-19 00:09:50,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:09:50,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:09:50,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378657832] [2020-08-19 00:09:50,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:09:50,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:09:50,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:09:50,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:09:50,117 INFO L87 Difference]: Start difference. First operand 443 states and 503 transitions. Second operand 8 states. [2020-08-19 00:09:50,506 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:09:51,020 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:09:53,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:09:53,487 INFO L93 Difference]: Finished difference Result 1296 states and 1667 transitions. [2020-08-19 00:09:53,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 00:09:53,488 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 108 [2020-08-19 00:09:53,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:09:53,495 INFO L225 Difference]: With dead ends: 1296 [2020-08-19 00:09:53,496 INFO L226 Difference]: Without dead ends: 881 [2020-08-19 00:09:53,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-08-19 00:09:53,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2020-08-19 00:09:53,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 749. [2020-08-19 00:09:53,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2020-08-19 00:09:53,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 881 transitions. [2020-08-19 00:09:53,677 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 881 transitions. Word has length 108 [2020-08-19 00:09:53,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:09:53,678 INFO L479 AbstractCegarLoop]: Abstraction has 749 states and 881 transitions. [2020-08-19 00:09:53,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:09:53,678 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 881 transitions. [2020-08-19 00:09:53,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-19 00:09:53,681 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:09:53,681 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:09:53,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 00:09:53,682 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:09:53,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:09:53,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1438503063, now seen corresponding path program 1 times [2020-08-19 00:09:53,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:09:53,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762829810] [2020-08-19 00:09:53,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:09:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:54,004 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:09:54,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:09:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:54,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:09:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:54,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:09:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:54,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:09:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:54,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:09:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:54,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:09:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:54,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:09:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:54,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:09:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:54,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 00:09:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:54,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:54,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:54,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:54,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:54,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:54,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:54,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:54,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:09:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:54,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:54,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:54,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:09:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:54,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-19 00:09:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:54,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-19 00:09:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:54,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 00:09:54,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762829810] [2020-08-19 00:09:54,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:09:54,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-19 00:09:54,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033801751] [2020-08-19 00:09:54,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-19 00:09:54,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:09:54,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-19 00:09:54,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:09:54,363 INFO L87 Difference]: Start difference. First operand 749 states and 881 transitions. Second operand 18 states. [2020-08-19 00:09:55,080 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:09:55,419 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:09:55,688 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:09:55,948 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:09:56,622 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:09:57,616 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:57,949 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:58,233 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:58,509 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:58,853 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:59,137 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:59,703 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-19 00:10:00,288 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-19 00:10:03,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:10:03,063 INFO L93 Difference]: Finished difference Result 1572 states and 1938 transitions. [2020-08-19 00:10:03,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-08-19 00:10:03,064 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 112 [2020-08-19 00:10:03,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:10:03,070 INFO L225 Difference]: With dead ends: 1572 [2020-08-19 00:10:03,071 INFO L226 Difference]: Without dead ends: 851 [2020-08-19 00:10:03,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=503, Invalid=2149, Unknown=0, NotChecked=0, Total=2652 [2020-08-19 00:10:03,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2020-08-19 00:10:03,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 728. [2020-08-19 00:10:03,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 728 states. [2020-08-19 00:10:03,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 846 transitions. [2020-08-19 00:10:03,235 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 846 transitions. Word has length 112 [2020-08-19 00:10:03,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:10:03,236 INFO L479 AbstractCegarLoop]: Abstraction has 728 states and 846 transitions. [2020-08-19 00:10:03,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-19 00:10:03,237 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 846 transitions. [2020-08-19 00:10:03,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-08-19 00:10:03,243 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:10:03,244 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:10:03,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 00:10:03,245 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:10:03,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:10:03,246 INFO L82 PathProgramCache]: Analyzing trace with hash -2045020006, now seen corresponding path program 1 times [2020-08-19 00:10:03,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:10:03,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263450773] [2020-08-19 00:10:03,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:10:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:03,601 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:10:03,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:10:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:03,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:10:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:03,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:10:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:03,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:10:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:03,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:10:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:03,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:10:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:03,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:10:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:03,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:10:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:03,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:10:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:03,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:10:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:03,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:10:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:03,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:10:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:03,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:10:03,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:03,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:10:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:03,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:10:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:03,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:10:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:03,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:10:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:03,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 00:10:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:03,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:10:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:03,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 00:10:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:03,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-19 00:10:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:03,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-19 00:10:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:03,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:10:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:03,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:10:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:03,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 00:10:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:03,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:10:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:03,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:10:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:03,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 00:10:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:04,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:10:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:04,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-19 00:10:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:04,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-08-19 00:10:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:04,063 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-19 00:10:04,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263450773] [2020-08-19 00:10:04,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:10:04,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 00:10:04,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401618907] [2020-08-19 00:10:04,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 00:10:04,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:10:04,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 00:10:04,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-19 00:10:04,072 INFO L87 Difference]: Start difference. First operand 728 states and 846 transitions. Second operand 19 states. [2020-08-19 00:10:05,255 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:10:05,623 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:10:05,914 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:10:06,178 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:10:06,845 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:10:07,899 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:10:08,249 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:10:08,578 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:10:08,848 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:10:09,171 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:10:09,446 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:10:10,674 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:10:10,933 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:10:11,246 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:10:11,511 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:10:12,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:10:12,664 INFO L93 Difference]: Finished difference Result 1341 states and 1663 transitions. [2020-08-19 00:10:12,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-19 00:10:12,665 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 181 [2020-08-19 00:10:12,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:10:12,666 INFO L225 Difference]: With dead ends: 1341 [2020-08-19 00:10:12,666 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 00:10:12,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=539, Invalid=2541, Unknown=0, NotChecked=0, Total=3080 [2020-08-19 00:10:12,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 00:10:12,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 00:10:12,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 00:10:12,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 00:10:12,675 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 181 [2020-08-19 00:10:12,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:10:12,676 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 00:10:12,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 00:10:12,676 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 00:10:12,676 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 00:10:12,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 00:10:12,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 00:10:14,568 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 310 DAG size of output: 247 [2020-08-19 00:10:14,865 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 207 [2020-08-19 00:10:15,224 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 207 [2020-08-19 00:10:16,664 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 326 DAG size of output: 265