/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:30:07,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:30:07,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:30:07,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:30:07,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:30:07,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:30:07,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:30:07,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:30:07,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:30:07,786 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:30:07,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:30:07,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:30:07,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:30:07,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:30:07,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:30:07,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:30:07,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:30:07,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:30:07,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:30:07,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:30:07,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:30:07,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:30:07,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:30:07,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:30:07,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:30:07,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:30:07,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:30:07,834 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:30:07,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:30:07,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:30:07,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:30:07,840 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:30:07,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:30:07,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:30:07,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:30:07,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:30:07,847 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:30:07,847 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:30:07,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:30:07,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:30:07,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:30:07,852 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 [2020-09-25 13:30:07,896 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:30:07,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:30:07,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:30:07,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:30:07,899 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:30:07,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:30:07,900 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:30:07,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:30:07,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:30:07,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:30:07,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:30:07,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:30:07,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:30:07,902 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:30:07,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:30:07,903 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:30:07,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:30:07,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:30:07,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:30:07,904 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:30:07,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:30:07,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:30:07,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:30:07,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:30:07,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:30:07,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:30:07,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:30:07,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:30:07,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:30:07,906 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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:30:08,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:30:08,480 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:30:08,486 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:30:08,490 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:30:08,491 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:30:08,492 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label55.c [2020-09-25 13:30:08,589 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/888f0b09f/8d50082019f14f1b949ac3103c81818b/FLAG3bf4d5895 [2020-09-25 13:30:09,289 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:30:09,290 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label55.c [2020-09-25 13:30:09,320 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/888f0b09f/8d50082019f14f1b949ac3103c81818b/FLAG3bf4d5895 [2020-09-25 13:30:09,491 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/888f0b09f/8d50082019f14f1b949ac3103c81818b [2020-09-25 13:30:09,506 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:30:09,512 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:30:09,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:30:09,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:30:09,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:30:09,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:30:09" (1/1) ... [2020-09-25 13:30:09,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd8ad23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:09, skipping insertion in model container [2020-09-25 13:30:09,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:30:09" (1/1) ... [2020-09-25 13:30:09,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:30:09,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:30:10,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:30:10,194 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:30:10,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:30:10,380 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:30:10,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:10 WrapperNode [2020-09-25 13:30:10,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:30:10,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:30:10,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:30:10,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:30:10,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:10" (1/1) ... [2020-09-25 13:30:10,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:10" (1/1) ... [2020-09-25 13:30:10,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:10" (1/1) ... [2020-09-25 13:30:10,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:10" (1/1) ... [2020-09-25 13:30:10,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:10" (1/1) ... [2020-09-25 13:30:10,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:10" (1/1) ... [2020-09-25 13:30:10,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:10" (1/1) ... [2020-09-25 13:30:10,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:30:10,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:30:10,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:30:10,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:30:10,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:10" (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 [2020-09-25 13:30:10,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:30:10,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:30:10,604 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:30:10,604 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:30:10,605 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:30:10,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:30:10,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:30:10,605 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:30:10,606 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:30:10,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:30:10,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:30:11,931 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:30:11,931 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:30:11,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:30:11 BoogieIcfgContainer [2020-09-25 13:30:11,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:30:11,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:30:11,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:30:11,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:30:11,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:30:09" (1/3) ... [2020-09-25 13:30:11,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35dbeaff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:30:11, skipping insertion in model container [2020-09-25 13:30:11,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:10" (2/3) ... [2020-09-25 13:30:11,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35dbeaff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:30:11, skipping insertion in model container [2020-09-25 13:30:11,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:30:11" (3/3) ... [2020-09-25 13:30:11,950 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label55.c [2020-09-25 13:30:11,963 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:30:11,974 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:30:11,999 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:30:12,047 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:30:12,048 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:30:12,048 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:30:12,048 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:30:12,048 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:30:12,048 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:30:12,049 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:30:12,049 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:30:12,082 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 13:30:12,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 13:30:12,105 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:12,107 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] [2020-09-25 13:30:12,107 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:12,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:12,116 INFO L82 PathProgramCache]: Analyzing trace with hash -2144769179, now seen corresponding path program 1 times [2020-09-25 13:30:12,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:12,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294783015] [2020-09-25 13:30:12,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:12,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:12,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:12,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:13,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:14,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:16,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:17,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:17,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 13:30:17,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:30:17,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-09-25 13:30:17,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:17,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:17,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:30:17,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 13:30:17,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 13:30:17,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:30:17,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:17,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:17,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:17,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:17,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:17,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:17,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 13:30:17,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:17,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:17,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:17,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:17,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 13:30:17,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:17,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:17,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294783015] [2020-09-25 13:30:17,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:30:17,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:30:17,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008183039] [2020-09-25 13:30:17,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:30:17,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:17,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:30:17,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:30:17,912 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 13:30:20,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:20,177 INFO L93 Difference]: Finished difference Result 1270 states and 1669 transitions. [2020-09-25 13:30:20,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:30:20,180 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-25 13:30:20,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:20,220 INFO L225 Difference]: With dead ends: 1270 [2020-09-25 13:30:20,220 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 13:30:20,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:30:20,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 13:30:20,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 603. [2020-09-25 13:30:20,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 13:30:20,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 731 transitions. [2020-09-25 13:30:20,345 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 731 transitions. Word has length 139 [2020-09-25 13:30:20,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:20,346 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 731 transitions. [2020-09-25 13:30:20,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:30:20,346 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 731 transitions. [2020-09-25 13:30:20,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 13:30:20,380 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:20,380 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:30:20,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:30:20,381 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:20,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:20,381 INFO L82 PathProgramCache]: Analyzing trace with hash 473875351, now seen corresponding path program 1 times [2020-09-25 13:30:20,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:20,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988686886] [2020-09-25 13:30:20,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:20,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:20,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:20,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:20,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:20,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:22,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:23,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:23,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:24,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:25,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:25,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 13:30:25,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:30:25,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:30:25,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:25,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:25,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:25,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 13:30:25,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 13:30:25,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:25,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:25,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:25,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:25,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:25,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:25,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:30:25,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:25,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:25,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:25,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:25,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:25,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:25,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:25,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:25,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:25,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:30:25,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:25,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:30:25,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:25,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:25,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:25,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:25,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:30:25,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:25,666 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:25,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988686886] [2020-09-25 13:30:25,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:25,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:30:25,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478733113] [2020-09-25 13:30:25,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:30:25,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:25,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:30:25,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:30:25,673 INFO L87 Difference]: Start difference. First operand 603 states and 731 transitions. Second operand 5 states. [2020-09-25 13:30:28,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:28,182 INFO L93 Difference]: Finished difference Result 1597 states and 2001 transitions. [2020-09-25 13:30:28,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:30:28,183 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 13:30:28,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:28,192 INFO L225 Difference]: With dead ends: 1597 [2020-09-25 13:30:28,192 INFO L226 Difference]: Without dead ends: 1018 [2020-09-25 13:30:28,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:30:28,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2020-09-25 13:30:28,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 758. [2020-09-25 13:30:28,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 758 states. [2020-09-25 13:30:28,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 933 transitions. [2020-09-25 13:30:28,239 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 933 transitions. Word has length 161 [2020-09-25 13:30:28,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:28,240 INFO L479 AbstractCegarLoop]: Abstraction has 758 states and 933 transitions. [2020-09-25 13:30:28,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:30:28,241 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 933 transitions. [2020-09-25 13:30:28,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 13:30:28,249 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:28,249 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:30:28,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:30:28,250 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:28,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:28,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1701451615, now seen corresponding path program 1 times [2020-09-25 13:30:28,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:28,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816474593] [2020-09-25 13:30:28,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:28,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:28,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:28,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:29,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:30,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:31,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:32,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:33,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:33,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 13:30:33,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:30:33,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 13:30:33,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:33,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:33,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 13:30:33,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-25 13:30:33,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 13:30:33,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:34,129 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 42 [2020-09-25 13:30:34,353 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 41 [2020-09-25 13:30:34,564 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 41 [2020-09-25 13:30:34,779 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 40 [2020-09-25 13:30:34,982 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 41 [2020-09-25 13:30:35,208 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 38 [2020-09-25 13:30:35,396 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 37 [2020-09-25 13:30:35,628 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 37 [2020-09-25 13:30:35,817 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 36 [2020-09-25 13:30:35,985 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 28 [2020-09-25 13:30:36,153 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 32 [2020-09-25 13:30:36,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:36,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:36,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:36,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:36,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:36,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:30:36,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:36,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:36,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:36,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:36,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:36,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:36,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:36,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:36,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:36,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:30:36,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:36,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 13:30:36,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:36,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:36,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:30:36,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:36,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 13:30:36,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:36,650 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:36,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816474593] [2020-09-25 13:30:36,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:36,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 13:30:36,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556583418] [2020-09-25 13:30:36,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 13:30:36,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:36,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 13:30:36,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=247, Unknown=0, NotChecked=0, Total=380 [2020-09-25 13:30:36,653 INFO L87 Difference]: Start difference. First operand 758 states and 933 transitions. Second operand 20 states. [2020-09-25 13:30:37,965 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-09-25 13:30:38,370 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 94 [2020-09-25 13:30:38,614 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2020-09-25 13:30:38,969 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 93 [2020-09-25 13:30:39,367 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 93 [2020-09-25 13:30:39,573 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2020-09-25 13:30:39,944 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 92 [2020-09-25 13:30:40,710 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 93 [2020-09-25 13:30:41,038 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 91 [2020-09-25 13:30:41,287 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2020-09-25 13:30:41,611 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 91 [2020-09-25 13:30:41,800 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2020-09-25 13:30:42,178 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 91 [2020-09-25 13:30:42,569 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-25 13:30:42,919 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 90 [2020-09-25 13:30:43,059 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-09-25 13:30:43,220 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2020-09-25 13:30:43,504 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 85 [2020-09-25 13:30:43,664 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-09-25 13:30:43,957 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 87 [2020-09-25 13:30:44,488 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-09-25 13:30:44,655 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2020-09-25 13:30:44,998 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-09-25 13:30:45,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:45,607 INFO L93 Difference]: Finished difference Result 2023 states and 2637 transitions. [2020-09-25 13:30:45,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-09-25 13:30:45,607 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 176 [2020-09-25 13:30:45,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:45,627 INFO L225 Difference]: With dead ends: 2023 [2020-09-25 13:30:45,627 INFO L226 Difference]: Without dead ends: 1289 [2020-09-25 13:30:45,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=680, Invalid=1482, Unknown=0, NotChecked=0, Total=2162 [2020-09-25 13:30:45,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2020-09-25 13:30:45,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1141. [2020-09-25 13:30:45,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1141 states. [2020-09-25 13:30:45,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1404 transitions. [2020-09-25 13:30:45,695 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1404 transitions. Word has length 176 [2020-09-25 13:30:45,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:45,695 INFO L479 AbstractCegarLoop]: Abstraction has 1141 states and 1404 transitions. [2020-09-25 13:30:45,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 13:30:45,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1404 transitions. [2020-09-25 13:30:45,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 13:30:45,701 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:45,702 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:30:45,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:30:45,702 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:45,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:45,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1190688682, now seen corresponding path program 1 times [2020-09-25 13:30:45,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:45,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813785948] [2020-09-25 13:30:45,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:45,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:45,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:45,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:46,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:46,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:50,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:50,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:50,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 13:30:50,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:30:50,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 13:30:50,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:50,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:50,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 13:30:50,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 13:30:50,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 13:30:50,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:51,367 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 43 [2020-09-25 13:30:51,550 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 43 [2020-09-25 13:30:51,695 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 39 [2020-09-25 13:30:51,836 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 35 [2020-09-25 13:30:51,984 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 31 [2020-09-25 13:30:52,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:52,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:52,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:52,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:52,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:52,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 13:30:52,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:52,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:52,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:52,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:52,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 13:30:52,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:52,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:52,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:52,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:52,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:52,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 13:30:52,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:30:52,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-25 13:30:52,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:52,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:52,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:30:52,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:52,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 13:30:52,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:52,769 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:52,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813785948] [2020-09-25 13:30:52,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:52,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 13:30:52,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423863928] [2020-09-25 13:30:52,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 13:30:52,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:52,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 13:30:52,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:30:52,771 INFO L87 Difference]: Start difference. First operand 1141 states and 1404 transitions. Second operand 19 states. [2020-09-25 13:30:54,867 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-09-25 13:30:55,132 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-09-25 13:30:55,741 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 115 [2020-09-25 13:30:56,315 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 115 [2020-09-25 13:30:57,638 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-25 13:30:58,430 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 115 [2020-09-25 13:30:59,269 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 115