/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:24:53,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:24:53,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:24:53,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:24:53,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:24:53,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:24:53,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:24:53,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:24:53,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:24:53,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:24:53,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:24:53,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:24:53,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:24:53,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:24:53,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:24:53,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:24:53,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:24:53,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:24:53,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:24:53,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:24:53,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:24:53,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:24:53,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:24:53,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:24:54,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:24:54,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:24:54,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:24:54,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:24:54,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:24:54,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:24:54,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:24:54,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:24:54,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:24:54,012 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:24:54,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:24:54,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:24:54,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:24:54,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:24:54,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:24:54,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:24:54,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:24:54,018 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 [2020-09-24 21:24:54,054 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:24:54,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:24:54,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:24:54,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:24:54,056 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:24:54,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:24:54,056 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:24:54,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:24:54,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:24:54,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:24:54,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:24:54,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:24:54,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:24:54,058 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:24:54,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:24:54,058 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:24:54,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:24:54,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:24:54,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:24:54,059 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:24:54,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:24:54,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:24:54,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:24:54,060 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:24:54,060 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:24:54,060 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:24:54,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:24:54,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:24:54,061 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:24:54,061 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.rcfgbuilder: Size of a code block -> SingleStatement 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 -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:24:54,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:24:54,511 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:24:54,515 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:24:54,518 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:24:54,519 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:24:54,520 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product40.cil.c [2020-09-24 21:24:54,615 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d286fb8b2/49645dc9c4e348c6b979e60e858da7de/FLAGc90b67f60 [2020-09-24 21:24:55,250 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:24:55,251 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product40.cil.c [2020-09-24 21:24:55,266 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d286fb8b2/49645dc9c4e348c6b979e60e858da7de/FLAGc90b67f60 [2020-09-24 21:24:55,485 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d286fb8b2/49645dc9c4e348c6b979e60e858da7de [2020-09-24 21:24:55,498 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:24:55,504 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:24:55,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:24:55,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:24:55,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:24:55,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:24:55" (1/1) ... [2020-09-24 21:24:55,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:55, skipping insertion in model container [2020-09-24 21:24:55,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:24:55" (1/1) ... [2020-09-24 21:24:55,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:24:55,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:24:56,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:24:56,192 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:24:56,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:24:56,314 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:24:56,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:56 WrapperNode [2020-09-24 21:24:56,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:24:56,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:24:56,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:24:56,316 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:24:56,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:56" (1/1) ... [2020-09-24 21:24:56,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:56" (1/1) ... [2020-09-24 21:24:56,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:56" (1/1) ... [2020-09-24 21:24:56,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:56" (1/1) ... [2020-09-24 21:24:56,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:56" (1/1) ... [2020-09-24 21:24:56,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:56" (1/1) ... [2020-09-24 21:24:56,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:56" (1/1) ... [2020-09-24 21:24:56,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:24:56,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:24:56,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:24:56,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:24:56,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:56" (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 [2020-09-24 21:24:56,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:24:56,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:24:56,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 21:24:56,529 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 21:24:56,529 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 21:24:56,529 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 21:24:56,529 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 21:24:56,529 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 21:24:56,530 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 21:24:56,530 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 21:24:56,530 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 21:24:56,530 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 21:24:56,530 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 21:24:56,531 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 21:24:56,531 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 21:24:56,531 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 21:24:56,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 21:24:56,531 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 21:24:56,532 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 21:24:56,532 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 21:24:56,532 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 21:24:56,532 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:24:56,533 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 21:24:56,533 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 21:24:56,533 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 21:24:56,533 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 21:24:56,533 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 21:24:56,534 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 21:24:56,534 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 21:24:56,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 21:24:56,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 21:24:56,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 21:24:56,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 21:24:56,535 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 21:24:56,535 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 21:24:56,535 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-24 21:24:56,535 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 21:24:56,535 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 21:24:56,535 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 21:24:56,536 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 21:24:56,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:24:56,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:24:56,536 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 21:24:56,536 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 21:24:56,536 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 21:24:56,537 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 21:24:56,537 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 21:24:56,537 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 21:24:56,537 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 21:24:56,537 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 21:24:56,538 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 21:24:56,538 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 21:24:56,538 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 21:24:56,538 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 21:24:56,538 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 21:24:56,538 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 21:24:56,538 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 21:24:56,539 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 21:24:56,539 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-24 21:24:56,539 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 21:24:56,539 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 21:24:56,539 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 21:24:56,539 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 21:24:56,540 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 21:24:56,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 21:24:56,540 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 21:24:56,540 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 21:24:56,540 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 21:24:56,540 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 21:24:56,541 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 21:24:56,541 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 21:24:56,541 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 21:24:56,541 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:24:56,541 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 21:24:56,541 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 21:24:56,542 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 21:24:56,542 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 21:24:56,542 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 21:24:56,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 21:24:56,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 21:24:56,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:24:56,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 21:24:56,543 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 21:24:56,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:24:56,543 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 21:24:56,543 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 21:24:56,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:24:56,544 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 21:24:56,544 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 21:24:56,544 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 21:24:56,544 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 21:24:56,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:24:56,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 21:24:56,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:24:57,916 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:24:57,917 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 21:24:57,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:24:57 BoogieIcfgContainer [2020-09-24 21:24:57,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:24:57,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:24:57,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:24:57,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:24:57,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:24:55" (1/3) ... [2020-09-24 21:24:57,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5894df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:24:57, skipping insertion in model container [2020-09-24 21:24:57,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:56" (2/3) ... [2020-09-24 21:24:57,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5894df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:24:57, skipping insertion in model container [2020-09-24 21:24:57,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:24:57" (3/3) ... [2020-09-24 21:24:57,940 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product40.cil.c [2020-09-24 21:24:57,952 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:24:57,967 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:24:57,991 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:24:58,026 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:24:58,026 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:24:58,026 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:24:58,026 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:24:58,026 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:24:58,026 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:24:58,027 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:24:58,027 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:24:58,057 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states. [2020-09-24 21:24:58,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 21:24:58,076 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:24:58,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:24:58,078 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:24:58,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:24:58,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1162021346, now seen corresponding path program 1 times [2020-09-24 21:24:58,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:24:58,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10884397] [2020-09-24 21:24:58,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:24:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:58,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:58,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:00,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:01,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:03,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:03,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 21:25:03,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:25:03,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 21:25:03,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:03,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:25:03,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 21:25:03,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 21:25:03,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-24 21:25:04,021 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:25:04,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:25:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:04,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:04,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:04,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:25:04,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:04,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-09-24 21:25:04,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:04,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:04,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:04,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:25:04,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:04,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:25:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:04,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:04,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:04,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:04,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:04,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:25:04,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:04,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:04,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:04,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:25:04,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:04,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:25:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:04,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:04,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:04,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:04,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:04,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:25:04,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:04,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:04,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:04,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:25:04,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:04,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:25:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:04,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:04,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:04,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:04,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:04,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:25:04,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:04,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:04,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:04,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:25:04,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:04,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:25:04,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:04,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:04,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:04,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:04,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:04,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:25:04,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:04,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:04,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:04,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:25:04,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:04,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 21:25:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:04,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:04,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:04,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:04,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:04,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:25:04,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:04,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:04,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:25:04,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:04,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:04,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 21:25:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:04,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:04,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:04,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:04,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:04,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:25:04,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:04,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:04,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:25:04,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:04,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:04,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:25:04,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10884397] [2020-09-24 21:25:04,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:25:04,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:25:04,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198511848] [2020-09-24 21:25:04,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:25:04,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:25:04,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:25:04,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:25:04,602 INFO L87 Difference]: Start difference. First operand 316 states. Second operand 4 states. [2020-09-24 21:25:05,237 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:25:07,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:25:07,565 INFO L93 Difference]: Finished difference Result 687 states and 831 transitions. [2020-09-24 21:25:07,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:25:07,567 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-09-24 21:25:07,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:25:07,589 INFO L225 Difference]: With dead ends: 687 [2020-09-24 21:25:07,589 INFO L226 Difference]: Without dead ends: 482 [2020-09-24 21:25:07,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:25:07,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-09-24 21:25:07,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 410. [2020-09-24 21:25:07,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2020-09-24 21:25:07,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 457 transitions. [2020-09-24 21:25:07,757 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 457 transitions. Word has length 142 [2020-09-24 21:25:07,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:25:07,759 INFO L479 AbstractCegarLoop]: Abstraction has 410 states and 457 transitions. [2020-09-24 21:25:07,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:25:07,759 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 457 transitions. [2020-09-24 21:25:07,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 21:25:07,765 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:25:07,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:25:07,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:25:07,765 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:25:07,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:25:07,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1650463023, now seen corresponding path program 1 times [2020-09-24 21:25:07,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:25:07,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019964764] [2020-09-24 21:25:07,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:25:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:07,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:07,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:08,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:08,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:12,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:12,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-24 21:25:12,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:25:12,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:25:12,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:12,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:25:12,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 21:25:12,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:25:12,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:13,189 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:25:13,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:25:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:13,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:13,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:13,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:25:13,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:13,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-24 21:25:13,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:13,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:13,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:13,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 21:25:13,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:13,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:25:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:13,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:13,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:13,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:13,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:13,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:25:13,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:13,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:13,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:13,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:25:13,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:13,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:25:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:13,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:13,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:13,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:13,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:13,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:25:13,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:13,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:13,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:13,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:25:13,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:13,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:25:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:13,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:13,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:13,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:13,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:13,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:25:13,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:13,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:13,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:13,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:25:13,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:13,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:25:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:13,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:13,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:13,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:13,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:13,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:25:13,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:13,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:13,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:13,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:25:13,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:13,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-24 21:25:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:13,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:13,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:13,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:13,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 21:25:13,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:25:13,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 21:25:13,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:13,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:25:13,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:25:13,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 21:25:13,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:13,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:25:13,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:13,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:13,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:13,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:25:13,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:13,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:25:13,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:13,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:25:13,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:25:13,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 21:25:13,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:13,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:25:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:13,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:13,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:13,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:13,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:13,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:25:13,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:13,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:13,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:13,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:25:13,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:13,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 21:25:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:13,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:13,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:13,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:13,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:13,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:25:13,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:13,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:13,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:25:13,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:13,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:13,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-24 21:25:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:13,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:13,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:13,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:13,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:13,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:25:13,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:13,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:13,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:25:13,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:13,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:13,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:25:13,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019964764] [2020-09-24 21:25:13,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:25:13,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:25:13,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072764069] [2020-09-24 21:25:13,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:25:13,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:25:13,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:25:13,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:25:13,683 INFO L87 Difference]: Start difference. First operand 410 states and 457 transitions. Second operand 6 states. [2020-09-24 21:25:14,151 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:25:15,757 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:25:16,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:25:16,968 INFO L93 Difference]: Finished difference Result 1110 states and 1376 transitions. [2020-09-24 21:25:16,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:25:16,969 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2020-09-24 21:25:16,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:25:16,980 INFO L225 Difference]: With dead ends: 1110 [2020-09-24 21:25:16,980 INFO L226 Difference]: Without dead ends: 810 [2020-09-24 21:25:16,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:25:16,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2020-09-24 21:25:17,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 665. [2020-09-24 21:25:17,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-24 21:25:17,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 759 transitions. [2020-09-24 21:25:17,096 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 759 transitions. Word has length 156 [2020-09-24 21:25:17,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:25:17,097 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 759 transitions. [2020-09-24 21:25:17,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:25:17,097 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 759 transitions. [2020-09-24 21:25:17,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-24 21:25:17,100 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:25:17,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:25:17,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:25:17,101 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:25:17,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:25:17,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1964515528, now seen corresponding path program 1 times [2020-09-24 21:25:17,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:25:17,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441259965] [2020-09-24 21:25:17,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:25:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:17,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:18,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:18,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:20,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:22,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:22,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-24 21:25:22,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:25:22,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-09-24 21:25:22,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:22,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:25:22,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 21:25:22,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-24 21:25:22,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:22,588 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:25:22,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:25:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:22,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:22,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:22,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:25:22,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:22,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-09-24 21:25:22,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:22,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:22,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:22,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 21:25:22,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:22,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:25:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:22,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:22,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:22,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:22,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:22,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:25:22,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:22,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:22,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:22,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:25:22,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:22,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:25:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:22,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:22,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:22,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:22,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:22,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:25:22,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:22,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:22,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:22,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:25:22,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:22,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:25:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:22,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:22,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:22,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:22,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:22,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:25:22,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:22,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:22,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:22,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:25:22,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:22,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:25:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:22,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:22,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:22,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:22,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:22,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:25:22,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:22,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:22,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:25:22,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:25:22,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-24 21:25:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:22,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:22,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:22,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:22,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:25:22,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:25:22,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:25:22,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:22,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:25:22,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:25:22,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:25:22,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:22,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 21:25:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:22,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:23,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:23,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:23,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:23,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:25:23,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:23,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:23,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:23,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:25:23,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:23,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-24 21:25:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:23,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:23,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:23,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:23,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:23,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:25:23,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:25:23,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:23,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:25:23,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:23,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:25:23,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441259965] [2020-09-24 21:25:23,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:25:23,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 21:25:23,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881711019] [2020-09-24 21:25:23,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:25:23,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:25:23,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:25:23,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:25:23,082 INFO L87 Difference]: Start difference. First operand 665 states and 759 transitions. Second operand 10 states. [2020-09-24 21:25:23,635 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:25:25,021 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:25:25,363 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:25:25,720 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:25:26,076 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:25:26,377 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:25:26,882 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:25:27,226 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:25:27,619 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:25:29,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:25:29,098 INFO L93 Difference]: Finished difference Result 820 states and 986 transitions. [2020-09-24 21:25:29,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 21:25:29,099 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2020-09-24 21:25:29,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:25:29,106 INFO L225 Difference]: With dead ends: 820 [2020-09-24 21:25:29,107 INFO L226 Difference]: Without dead ends: 817 [2020-09-24 21:25:29,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2020-09-24 21:25:29,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2020-09-24 21:25:29,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 665. [2020-09-24 21:25:29,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-24 21:25:29,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 757 transitions. [2020-09-24 21:25:29,235 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 757 transitions. Word has length 161 [2020-09-24 21:25:29,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:25:29,236 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 757 transitions. [2020-09-24 21:25:29,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 21:25:29,236 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 757 transitions. [2020-09-24 21:25:29,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-24 21:25:29,240 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:25:29,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:25:29,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:25:29,240 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:25:29,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:25:29,241 INFO L82 PathProgramCache]: Analyzing trace with hash 218420569, now seen corresponding path program 1 times [2020-09-24 21:25:29,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:25:29,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055826173] [2020-09-24 21:25:29,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:25:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:29,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:29,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:34,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:34,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-24 21:25:34,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:25:34,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-09-24 21:25:34,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:34,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 21:25:34,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 21:25:34,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-24 21:25:34,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:34,717 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:25:34,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:25:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:34,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:35,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:35,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:25:35,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:35,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-09-24 21:25:35,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:35,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:35,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:35,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 21:25:35,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:35,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:25:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:35,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:35,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:35,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:35,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:35,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:25:35,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:35,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:35,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:35,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:25:35,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:35,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:25:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:35,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:35,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:35,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:35,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:35,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:25:35,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:35,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:35,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:35,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:25:35,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:35,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:25:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:35,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:35,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:35,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:35,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:35,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:25:35,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:35,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:35,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:35,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:25:35,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:35,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:25:35,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:35,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:35,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:35,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:35,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:35,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:25:35,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:35,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:35,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:35,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:25:35,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:35,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-24 21:25:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:35,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:35,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:35,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:25:35,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:35,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:25:35,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:35,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:35,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:35,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:25:35,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:35,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 21:25:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:35,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:35,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:35,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:35,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 21:25:35,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:25:35,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-24 21:25:35,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:35,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:35,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:35,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 21:25:35,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:35,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:25:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:35,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:35,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:35,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:35,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 21:25:35,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:25:35,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-24 21:25:35,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:35,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:35,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:35,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:35,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:35,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:25:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:35,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:35,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:35,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:25:35,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:35,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:25:35,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:35,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:35,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:35,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:35,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:35,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:25:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:35,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:35,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:35,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:25:35,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:35,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:25:35,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:35,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:35,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:35,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:35,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:35,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 21:25:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:35,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:35,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:35,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:25:35,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:35,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:25:35,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:35,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:35,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:35,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:35,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:35,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-24 21:25:35,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:35,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:35,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:35,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:35,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:35,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:25:35,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:35,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:25:35,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:35,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:25:35,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:35,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-24 21:25:35,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:35,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:35,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:35,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:35,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:35,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:25:35,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:35,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:35,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:25:35,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:35,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:25:35,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055826173] [2020-09-24 21:25:35,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:25:35,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 21:25:35,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466511229] [2020-09-24 21:25:35,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 21:25:35,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:25:35,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 21:25:35,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:25:35,683 INFO L87 Difference]: Start difference. First operand 665 states and 757 transitions. Second operand 11 states. [2020-09-24 21:25:36,409 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:25:37,590 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:25:38,190 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-09-24 21:25:38,528 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:25:38,850 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 21:25:39,167 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:25:40,249 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:25:40,522 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 21:25:40,902 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188