/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=0.2 --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_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:14:31,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:14:31,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:14:31,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:14:31,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:14:31,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:14:31,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:14:31,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:14:31,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:14:31,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:14:31,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:14:31,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:14:31,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:14:31,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:14:31,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:14:31,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:14:31,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:14:31,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:14:31,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:14:31,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:14:31,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:14:31,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:14:31,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:14:31,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:14:31,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:14:31,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:14:31,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:14:31,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:14:31,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:14:31,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:14:31,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:14:31,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:14:31,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:14:31,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:14:31,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:14:31,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:14:31,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:14:31,996 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:14:31,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:14:31,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:14:31,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:14:31,999 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 11:14:32,025 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:14:32,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:14:32,027 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:14:32,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:14:32,028 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:14:32,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:14:32,028 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:14:32,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:14:32,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:14:32,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:14:32,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:14:32,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:14:32,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:14:32,030 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:14:32,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:14:32,030 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:14:32,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:14:32,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:14:32,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:14:32,031 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:14:32,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:14:32,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:14:32,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:14:32,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:14:32,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:14:32,032 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:14:32,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:14:32,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:14:32,033 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:14:32,033 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:14:32,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:14:32,517 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:14:32,520 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:14:32,522 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:14:32,523 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:14:32,525 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label46.c [2020-09-25 11:14:32,599 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb516833f/b758eedbabe34902983224cbcc88ce2b/FLAG8e4d2fdd3 [2020-09-25 11:14:33,217 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:14:33,218 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label46.c [2020-09-25 11:14:33,253 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb516833f/b758eedbabe34902983224cbcc88ce2b/FLAG8e4d2fdd3 [2020-09-25 11:14:33,464 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb516833f/b758eedbabe34902983224cbcc88ce2b [2020-09-25 11:14:33,479 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:14:33,486 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:14:33,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:14:33,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:14:33,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:14:33,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:14:33" (1/1) ... [2020-09-25 11:14:33,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@682ba3bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:33, skipping insertion in model container [2020-09-25 11:14:33,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:14:33" (1/1) ... [2020-09-25 11:14:33,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:14:33,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:14:34,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:14:34,224 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:14:34,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:14:34,340 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:14:34,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:34 WrapperNode [2020-09-25 11:14:34,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:14:34,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:14:34,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:14:34,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:14:34,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:34" (1/1) ... [2020-09-25 11:14:34,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:34" (1/1) ... [2020-09-25 11:14:34,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:34" (1/1) ... [2020-09-25 11:14:34,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:34" (1/1) ... [2020-09-25 11:14:34,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:34" (1/1) ... [2020-09-25 11:14:34,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:34" (1/1) ... [2020-09-25 11:14:34,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:34" (1/1) ... [2020-09-25 11:14:34,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:14:34,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:14:34,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:14:34,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:14:34,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:34" (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 11:14:34,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:14:34,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:14:34,560 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:14:34,560 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:14:34,560 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:14:34,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:14:34,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:14:34,563 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:14:34,563 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:14:34,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:14:34,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:14:35,983 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:14:35,983 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:14:35,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:14:35 BoogieIcfgContainer [2020-09-25 11:14:35,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:14:35,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:14:35,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:14:35,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:14:35,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:14:33" (1/3) ... [2020-09-25 11:14:36,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c841cb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:14:36, skipping insertion in model container [2020-09-25 11:14:36,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:34" (2/3) ... [2020-09-25 11:14:36,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c841cb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:14:36, skipping insertion in model container [2020-09-25 11:14:36,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:14:35" (3/3) ... [2020-09-25 11:14:36,004 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label46.c [2020-09-25 11:14:36,016 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:14:36,028 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:14:36,051 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:14:36,084 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:14:36,084 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:14:36,084 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:14:36,084 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:14:36,084 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:14:36,085 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:14:36,085 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:14:36,085 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:14:36,117 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 11:14:36,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 11:14:36,142 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:36,143 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] [2020-09-25 11:14:36,144 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:36,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:36,152 INFO L82 PathProgramCache]: Analyzing trace with hash -2063330177, now seen corresponding path program 1 times [2020-09-25 11:14:36,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:36,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594137619] [2020-09-25 11:14:36,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:36,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:36,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:37,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:38,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:41,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:41,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:41,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 11:14:41,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:14:41,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 11:14:41,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:41,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:41,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:14:41,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 11:14:41,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 11:14:41,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:14:41,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:41,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:41,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:41,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:41,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:41,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 11:14:41,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:41,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:41,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:41,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:41,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 11:14:41,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:41,860 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 11:14:41,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594137619] [2020-09-25 11:14:41,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:14:41,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:14:41,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975187557] [2020-09-25 11:14:41,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:14:41,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:41,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:14:41,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:14:41,897 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 11:14:44,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:14:44,054 INFO L93 Difference]: Finished difference Result 1270 states and 1669 transitions. [2020-09-25 11:14:44,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:14:44,057 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2020-09-25 11:14:44,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:14:44,082 INFO L225 Difference]: With dead ends: 1270 [2020-09-25 11:14:44,083 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 11:14:44,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:14:44,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 11:14:44,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 603. [2020-09-25 11:14:44,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 11:14:44,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 731 transitions. [2020-09-25 11:14:44,204 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 731 transitions. Word has length 140 [2020-09-25 11:14:44,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:14:44,208 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 731 transitions. [2020-09-25 11:14:44,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:14:44,209 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 731 transitions. [2020-09-25 11:14:44,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 11:14:44,224 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:44,226 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, 1] [2020-09-25 11:14:44,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:14:44,226 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:44,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:44,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1805238925, now seen corresponding path program 1 times [2020-09-25 11:14:44,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:44,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222354400] [2020-09-25 11:14:44,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:44,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:44,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:44,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:44,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:44,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:45,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:46,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:46,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:49,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:49,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:49,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 11:14:49,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:14:49,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 11:14:49,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:49,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:49,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 11:14:49,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 11:14:49,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 11:14:49,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:14:49,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:49,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:49,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:49,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:49,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:49,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 11:14:49,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:49,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:49,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:49,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:49,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:14:49,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:49,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:14:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:50,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:50,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:50,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:50,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:14:50,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:14:50,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 11:14:50,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:50,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:50,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:14:50,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:50,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 11:14:50,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:50,411 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 11:14:50,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222354400] [2020-09-25 11:14:50,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:14:50,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 11:14:50,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963339248] [2020-09-25 11:14:50,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 11:14:50,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:50,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 11:14:50,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2020-09-25 11:14:50,417 INFO L87 Difference]: Start difference. First operand 603 states and 731 transitions. Second operand 20 states. [2020-09-25 11:14:51,848 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2020-09-25 11:14:52,085 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-09-25 11:14:52,372 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 90 [2020-09-25 11:14:52,756 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-09-25 11:14:53,069 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-09-25 11:14:53,387 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 89 [2020-09-25 11:14:54,052 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 88 [2020-09-25 11:14:54,452 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2020-09-25 11:14:55,369 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-09-25 11:14:56,196 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 86 [2020-09-25 11:14:56,469 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-09-25 11:14:57,008 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-09-25 11:14:57,326 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-09-25 11:14:57,976 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-09-25 11:14:58,549 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2020-09-25 11:14:58,942 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-09-25 11:14:59,494 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-09-25 11:15:00,136 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-25 11:15:00,781 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-09-25 11:15:01,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:01,791 INFO L93 Difference]: Finished difference Result 1970 states and 2592 transitions. [2020-09-25 11:15:01,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-09-25 11:15:01,791 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 162 [2020-09-25 11:15:01,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:01,801 INFO L225 Difference]: With dead ends: 1970 [2020-09-25 11:15:01,802 INFO L226 Difference]: Without dead ends: 1391 [2020-09-25 11:15:01,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1007, Invalid=2653, Unknown=0, NotChecked=0, Total=3660 [2020-09-25 11:15:01,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2020-09-25 11:15:01,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1280. [2020-09-25 11:15:01,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1280 states. [2020-09-25 11:15:01,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1534 transitions. [2020-09-25 11:15:01,884 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1534 transitions. Word has length 162 [2020-09-25 11:15:01,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:01,885 INFO L479 AbstractCegarLoop]: Abstraction has 1280 states and 1534 transitions. [2020-09-25 11:15:01,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 11:15:01,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1534 transitions. [2020-09-25 11:15:01,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 11:15:01,892 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:01,895 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:15:01,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:15:01,896 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:01,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:01,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1181282038, now seen corresponding path program 1 times [2020-09-25 11:15:01,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:01,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422478997] [2020-09-25 11:15:01,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:01,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:02,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:02,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:02,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:02,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:03,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:03,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:05,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:05,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:06,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:06,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 11:15:06,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:15:06,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 11:15:06,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:06,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:06,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:15:06,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 11:15:06,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 11:15:06,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:07,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:07,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:07,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:07,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:15:07,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:07,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:15:07,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:07,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:07,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:15:07,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:07,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:15:07,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:07,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:15:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:07,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:07,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:07,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:15:07,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:07,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 11:15:07,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:07,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:07,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:15:07,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:07,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 11:15:07,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:07,275 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:15:07,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422478997] [2020-09-25 11:15:07,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:15:07,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:15:07,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406364160] [2020-09-25 11:15:07,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:15:07,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:07,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:15:07,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:15:07,278 INFO L87 Difference]: Start difference. First operand 1280 states and 1534 transitions. Second operand 6 states. [2020-09-25 11:15:09,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:09,739 INFO L93 Difference]: Finished difference Result 3284 states and 4152 transitions. [2020-09-25 11:15:09,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:15:09,740 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2020-09-25 11:15:09,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:09,758 INFO L225 Difference]: With dead ends: 3284 [2020-09-25 11:15:09,758 INFO L226 Difference]: Without dead ends: 2028 [2020-09-25 11:15:09,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:15:09,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2020-09-25 11:15:09,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 1995. [2020-09-25 11:15:09,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1995 states. [2020-09-25 11:15:09,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 2489 transitions. [2020-09-25 11:15:09,848 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 2489 transitions. Word has length 169 [2020-09-25 11:15:09,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:09,849 INFO L479 AbstractCegarLoop]: Abstraction has 1995 states and 2489 transitions. [2020-09-25 11:15:09,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:15:09,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 2489 transitions. [2020-09-25 11:15:09,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-25 11:15:09,858 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:09,858 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:15:09,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:15:09,859 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:09,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:09,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1796474422, now seen corresponding path program 1 times [2020-09-25 11:15:09,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:09,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265226351] [2020-09-25 11:15:09,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:09,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:10,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:10,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:12,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:12,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:13,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:14,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:14,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-25 11:15:14,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:15:14,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 11:15:14,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:14,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:14,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:15:14,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 11:15:14,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 11:15:14,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:15,698 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2020-09-25 11:15:15,965 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 51 [2020-09-25 11:15:16,232 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 52 [2020-09-25 11:15:16,496 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 49 [2020-09-25 11:15:16,747 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 45 [2020-09-25 11:15:16,979 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 41 [2020-09-25 11:15:17,204 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 37 [2020-09-25 11:15:17,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:17,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:17,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:17,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:15:17,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:17,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:15:17,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:17,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:17,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:15:17,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:17,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:15:17,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:15:17,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:15:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:17,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:17,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:17,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:15:17,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:17,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:15:17,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:17,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:17,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:15:17,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:17,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:15:17,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:15:17,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 11:15:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:17,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:17,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:17,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 11:15:17,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:17,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 11:15:17,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:17,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:17,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:15:17,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:17,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:15:17,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:17,839 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 11:15:17,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265226351] [2020-09-25 11:15:17,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:15:17,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 11:15:17,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501218352] [2020-09-25 11:15:17,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 11:15:17,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:17,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 11:15:17,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-09-25 11:15:17,843 INFO L87 Difference]: Start difference. First operand 1995 states and 2489 transitions. Second operand 16 states. [2020-09-25 11:15:19,646 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-09-25 11:15:19,903 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-09-25 11:15:20,845 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 116 [2020-09-25 11:15:21,390 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 113 [2020-09-25 11:15:21,812 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2020-09-25 11:15:22,333 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 110 [2020-09-25 11:15:22,735 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 107