/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 SequenceOfStatements --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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-tiling/rewnif.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 05:26:35,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 05:26:35,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 05:26:35,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 05:26:35,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 05:26:35,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 05:26:35,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 05:26:35,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 05:26:35,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 05:26:35,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 05:26:35,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 05:26:35,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 05:26:35,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 05:26:35,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 05:26:35,371 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 05:26:35,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 05:26:35,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 05:26:35,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 05:26:35,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 05:26:35,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 05:26:35,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 05:26:35,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 05:26:35,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 05:26:35,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 05:26:35,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 05:26:35,384 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 05:26:35,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 05:26:35,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 05:26:35,385 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 05:26:35,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 05:26:35,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 05:26:35,387 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 05:26:35,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 05:26:35,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 05:26:35,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 05:26:35,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 05:26:35,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 05:26:35,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 05:26:35,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 05:26:35,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 05:26:35,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 05:26:35,393 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 [2020-10-13 05:26:35,414 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 05:26:35,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 05:26:35,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 05:26:35,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 05:26:35,416 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 05:26:35,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 05:26:35,417 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 05:26:35,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 05:26:35,417 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 05:26:35,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 05:26:35,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 05:26:35,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 05:26:35,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 05:26:35,418 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 05:26:35,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 05:26:35,418 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 05:26:35,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 05:26:35,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 05:26:35,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 05:26:35,419 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 05:26:35,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 05:26:35,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 05:26:35,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 05:26:35,420 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 05:26:35,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 05:26:35,420 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 05:26:35,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 05:26:35,421 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 05:26:35,421 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 05:26:35,421 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 -> SequenceOfStatements 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 05:26:35,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 05:26:35,739 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 05:26:35,742 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 05:26:35,743 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 05:26:35,744 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 05:26:35,745 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/rewnif.c [2020-10-13 05:26:35,796 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/308e75f10/4cf12b19f9bb4210abf428a9c300edd5/FLAGd939e1e2d [2020-10-13 05:26:36,251 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 05:26:36,251 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/rewnif.c [2020-10-13 05:26:36,258 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/308e75f10/4cf12b19f9bb4210abf428a9c300edd5/FLAGd939e1e2d [2020-10-13 05:26:36,637 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/308e75f10/4cf12b19f9bb4210abf428a9c300edd5 [2020-10-13 05:26:36,648 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 05:26:36,650 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 05:26:36,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 05:26:36,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 05:26:36,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 05:26:36,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:26:36" (1/1) ... [2020-10-13 05:26:36,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@155d8a11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:26:36, skipping insertion in model container [2020-10-13 05:26:36,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:26:36" (1/1) ... [2020-10-13 05:26:36,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 05:26:36,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 05:26:36,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:26:36,918 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 05:26:36,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:26:36,963 INFO L208 MainTranslator]: Completed translation [2020-10-13 05:26:36,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:26:36 WrapperNode [2020-10-13 05:26:36,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 05:26:36,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 05:26:36,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 05:26:36,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 05:26:37,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:26:36" (1/1) ... [2020-10-13 05:26:37,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:26:36" (1/1) ... [2020-10-13 05:26:37,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:26:36" (1/1) ... [2020-10-13 05:26:37,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:26:36" (1/1) ... [2020-10-13 05:26:37,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:26:36" (1/1) ... [2020-10-13 05:26:37,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:26:36" (1/1) ... [2020-10-13 05:26:37,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:26:36" (1/1) ... [2020-10-13 05:26:37,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 05:26:37,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 05:26:37,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 05:26:37,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 05:26:37,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:26:36" (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 [2020-10-13 05:26:37,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 05:26:37,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 05:26:37,161 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 05:26:37,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 05:26:37,161 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 05:26:37,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 05:26:37,162 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 05:26:37,162 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 05:26:37,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 05:26:37,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 05:26:37,163 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 05:26:37,163 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 05:26:37,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 05:26:37,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 05:26:37,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 05:26:37,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 05:26:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 05:26:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 05:26:37,425 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 05:26:37,425 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-13 05:26:37,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:26:37 BoogieIcfgContainer [2020-10-13 05:26:37,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 05:26:37,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 05:26:37,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 05:26:37,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 05:26:37,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:26:36" (1/3) ... [2020-10-13 05:26:37,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e7e0a28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:26:37, skipping insertion in model container [2020-10-13 05:26:37,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:26:36" (2/3) ... [2020-10-13 05:26:37,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e7e0a28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:26:37, skipping insertion in model container [2020-10-13 05:26:37,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:26:37" (3/3) ... [2020-10-13 05:26:37,439 INFO L109 eAbstractionObserver]: Analyzing ICFG rewnif.c [2020-10-13 05:26:37,453 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 05:26:37,465 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 05:26:37,498 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 05:26:37,534 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 05:26:37,535 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 05:26:37,535 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 05:26:37,535 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 05:26:37,535 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 05:26:37,535 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 05:26:37,535 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 05:26:37,535 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 05:26:37,554 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-13 05:26:37,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-13 05:26:37,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:37,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:37,561 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:37,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:37,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1564765221, now seen corresponding path program 1 times [2020-10-13 05:26:37,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:37,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771846126] [2020-10-13 05:26:37,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:37,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:37,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:37,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 05:26:37,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:37,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-13 05:26:37,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:37,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:37,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:26:37,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 05:26:37,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 05:26:37,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:37,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:37,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:37,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:37,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:37,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 05:26:37,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:37,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:37,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:37,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:37,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:37,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:26:37,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771846126] [2020-10-13 05:26:37,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:26:37,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 05:26:37,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895231937] [2020-10-13 05:26:38,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 05:26:38,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:38,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 05:26:38,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:26:38,022 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 4 states. [2020-10-13 05:26:38,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:38,216 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2020-10-13 05:26:38,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 05:26:38,219 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-13 05:26:38,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:38,229 INFO L225 Difference]: With dead ends: 51 [2020-10-13 05:26:38,230 INFO L226 Difference]: Without dead ends: 26 [2020-10-13 05:26:38,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:26:38,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-13 05:26:38,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-10-13 05:26:38,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-13 05:26:38,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-10-13 05:26:38,276 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 14 [2020-10-13 05:26:38,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:38,276 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-10-13 05:26:38,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 05:26:38,277 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-10-13 05:26:38,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-13 05:26:38,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:38,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:38,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 05:26:38,279 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:38,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:38,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1138009376, now seen corresponding path program 1 times [2020-10-13 05:26:38,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:38,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656656898] [2020-10-13 05:26:38,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:38,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:38,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:38,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:38,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:38,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 05:26:38,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:26:38,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-10-13 05:26:38,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:38,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:26:38,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 05:26:38,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 05:26:38,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:38,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:38,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:38,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:38,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:38,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:38,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:26:38,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:38,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:38,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:38,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:38,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:38,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:26:38,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656656898] [2020-10-13 05:26:38,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:26:38,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 05:26:38,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523203420] [2020-10-13 05:26:38,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 05:26:38,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:38,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 05:26:38,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:26:38,880 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 5 states. [2020-10-13 05:26:38,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:38,959 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2020-10-13 05:26:38,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 05:26:38,959 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-13 05:26:38,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:38,961 INFO L225 Difference]: With dead ends: 38 [2020-10-13 05:26:38,961 INFO L226 Difference]: Without dead ends: 27 [2020-10-13 05:26:38,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:26:38,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-13 05:26:38,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-13 05:26:38,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 05:26:38,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-10-13 05:26:38,969 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 18 [2020-10-13 05:26:38,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:38,970 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-10-13 05:26:38,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 05:26:38,970 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-10-13 05:26:38,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-13 05:26:38,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:38,972 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:38,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 05:26:38,972 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:38,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:38,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1844234969, now seen corresponding path program 1 times [2020-10-13 05:26:38,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:38,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65450274] [2020-10-13 05:26:38,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:38,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:39,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:39,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 05:26:39,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:39,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-13 05:26:39,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:39,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 05:26:39,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:26:39,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 05:26:39,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:39,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:39,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:39,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:39,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:39,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:39,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:39,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:26:39,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:39,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:39,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:39,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:39,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:39,381 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:26:39,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65450274] [2020-10-13 05:26:39,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:26:39,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 05:26:39,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758155052] [2020-10-13 05:26:39,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 05:26:39,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:39,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 05:26:39,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-13 05:26:39,384 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 10 states. [2020-10-13 05:26:39,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:39,686 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2020-10-13 05:26:39,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 05:26:39,687 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-10-13 05:26:39,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:39,690 INFO L225 Difference]: With dead ends: 49 [2020-10-13 05:26:39,691 INFO L226 Difference]: Without dead ends: 47 [2020-10-13 05:26:39,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-13 05:26:39,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-13 05:26:39,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2020-10-13 05:26:39,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 05:26:39,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-13 05:26:39,706 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 22 [2020-10-13 05:26:39,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:39,706 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-13 05:26:39,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 05:26:39,707 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-13 05:26:39,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 05:26:39,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:39,708 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:39,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 05:26:39,709 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:39,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:39,709 INFO L82 PathProgramCache]: Analyzing trace with hash 467523796, now seen corresponding path program 2 times [2020-10-13 05:26:39,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:39,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755735356] [2020-10-13 05:26:39,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:39,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:39,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:40,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:40,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 05:26:40,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:26:40,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-10-13 05:26:40,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:40,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 05:26:40,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:26:40,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 05:26:40,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:40,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:40,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:40,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:40,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:40,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:40,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:26:40,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:40,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:40,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:40,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:40,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:40,487 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:26:40,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755735356] [2020-10-13 05:26:40,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:26:40,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 05:26:40,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012930464] [2020-10-13 05:26:40,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 05:26:40,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:40,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 05:26:40,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-13 05:26:40,490 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 13 states. [2020-10-13 05:26:40,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:40,888 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2020-10-13 05:26:40,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 05:26:40,888 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2020-10-13 05:26:40,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:40,890 INFO L225 Difference]: With dead ends: 60 [2020-10-13 05:26:40,890 INFO L226 Difference]: Without dead ends: 58 [2020-10-13 05:26:40,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2020-10-13 05:26:40,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-13 05:26:40,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 33. [2020-10-13 05:26:40,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 05:26:40,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-10-13 05:26:40,900 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 26 [2020-10-13 05:26:40,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:40,900 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-10-13 05:26:40,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 05:26:40,900 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-10-13 05:26:40,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 05:26:40,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:40,902 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:40,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 05:26:40,902 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:40,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:40,903 INFO L82 PathProgramCache]: Analyzing trace with hash 2097899152, now seen corresponding path program 1 times [2020-10-13 05:26:40,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:40,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005334552] [2020-10-13 05:26:40,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:40,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:41,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:41,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 05:26:41,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:41,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-13 05:26:41,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:41,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 05:26:41,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:26:41,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 05:26:41,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:41,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:41,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:41,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:41,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:41,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:41,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:26:41,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:41,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:41,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:41,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:41,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:41,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 05:26:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:41,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:41,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:41,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:41,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:41,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 05:26:41,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:41,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:41,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:41,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:41,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:41,184 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:26:41,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005334552] [2020-10-13 05:26:41,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:26:41,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 05:26:41,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040312955] [2020-10-13 05:26:41,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 05:26:41,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:41,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 05:26:41,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-13 05:26:41,187 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 11 states. [2020-10-13 05:26:41,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:41,670 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2020-10-13 05:26:41,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 05:26:41,671 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-13 05:26:41,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:41,673 INFO L225 Difference]: With dead ends: 71 [2020-10-13 05:26:41,673 INFO L226 Difference]: Without dead ends: 69 [2020-10-13 05:26:41,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-13 05:26:41,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-13 05:26:41,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 55. [2020-10-13 05:26:41,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 05:26:41,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2020-10-13 05:26:41,704 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 30 [2020-10-13 05:26:41,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:41,705 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2020-10-13 05:26:41,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 05:26:41,705 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2020-10-13 05:26:41,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 05:26:41,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:41,711 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:41,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 05:26:41,711 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:41,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:41,713 INFO L82 PathProgramCache]: Analyzing trace with hash -95790265, now seen corresponding path program 2 times [2020-10-13 05:26:41,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:41,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393618815] [2020-10-13 05:26:41,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:41,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:41,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:41,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:41,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:42,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:42,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:42,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 05:26:42,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:26:42,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 962 [2020-10-13 05:26:42,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:42,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 05:26:42,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:26:42,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 05:26:42,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:42,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:42,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:42,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:42,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:42,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:42,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:26:42,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:42,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:42,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:42,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:42,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:42,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 05:26:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:42,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:42,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:42,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:42,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:42,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:26:42,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:42,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:42,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:42,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:42,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:42,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 05:26:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:42,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:42,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:42,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:42,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:42,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:26:42,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:42,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:42,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:42,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:42,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:42,780 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 05:26:42,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393618815] [2020-10-13 05:26:42,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:26:42,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 05:26:42,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392316215] [2020-10-13 05:26:42,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 05:26:42,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:42,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 05:26:42,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-13 05:26:42,783 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 9 states. [2020-10-13 05:26:42,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:42,995 INFO L93 Difference]: Finished difference Result 121 states and 134 transitions. [2020-10-13 05:26:42,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 05:26:42,996 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-10-13 05:26:42,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:42,999 INFO L225 Difference]: With dead ends: 121 [2020-10-13 05:26:42,999 INFO L226 Difference]: Without dead ends: 61 [2020-10-13 05:26:43,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-13 05:26:43,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-13 05:26:43,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2020-10-13 05:26:43,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 05:26:43,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-10-13 05:26:43,019 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 38 [2020-10-13 05:26:43,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:43,019 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-10-13 05:26:43,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 05:26:43,020 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-10-13 05:26:43,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 05:26:43,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:43,022 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:43,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 05:26:43,023 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:43,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:43,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1358247686, now seen corresponding path program 3 times [2020-10-13 05:26:43,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:43,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755400609] [2020-10-13 05:26:43,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:43,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:43,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:43,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:43,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 05:26:43,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:26:43,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 593 [2020-10-13 05:26:43,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:43,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 05:26:43,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:26:43,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 05:26:43,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:43,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:43,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:43,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:43,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:43,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:43,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:43,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:26:43,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:43,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:43,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:43,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:43,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:43,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 05:26:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:43,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:43,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:43,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:43,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:43,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:26:43,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:43,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:43,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:43,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:43,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:43,989 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:26:43,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755400609] [2020-10-13 05:26:43,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:26:43,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 05:26:43,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595244583] [2020-10-13 05:26:43,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 05:26:43,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:43,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 05:26:43,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-13 05:26:43,992 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 15 states. [2020-10-13 05:26:44,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:44,815 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2020-10-13 05:26:44,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 05:26:44,816 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 38 [2020-10-13 05:26:44,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:44,817 INFO L225 Difference]: With dead ends: 74 [2020-10-13 05:26:44,818 INFO L226 Difference]: Without dead ends: 72 [2020-10-13 05:26:44,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=174, Invalid=696, Unknown=0, NotChecked=0, Total=870 [2020-10-13 05:26:44,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-13 05:26:44,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 45. [2020-10-13 05:26:44,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 05:26:44,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-10-13 05:26:44,828 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 38 [2020-10-13 05:26:44,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:44,829 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-10-13 05:26:44,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 05:26:44,830 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-10-13 05:26:44,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 05:26:44,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:44,831 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:44,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 05:26:44,831 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:44,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:44,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1561203522, now seen corresponding path program 4 times [2020-10-13 05:26:44,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:44,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990714443] [2020-10-13 05:26:44,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:44,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:44,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:45,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:45,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:45,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 05:26:45,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:26:45,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 930 [2020-10-13 05:26:45,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:45,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 05:26:45,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:26:45,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 05:26:45,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:46,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:46,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:46,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:46,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:46,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:46,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:26:46,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:46,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:46,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:46,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:46,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:46,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 05:26:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:46,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:46,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:46,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:46,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:46,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 05:26:46,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:46,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:46,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:46,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:46,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:46,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 05:26:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:46,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:46,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:46,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:46,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:46,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 05:26:46,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:46,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:26:46,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:46,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:26:46,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:46,191 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 05:26:46,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990714443] [2020-10-13 05:26:46,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:26:46,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 05:26:46,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127484255] [2020-10-13 05:26:46,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 05:26:46,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:46,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 05:26:46,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2020-10-13 05:26:46,194 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 20 states. [2020-10-13 05:26:48,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:48,198 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-10-13 05:26:48,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-13 05:26:48,199 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 42 [2020-10-13 05:26:48,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:48,201 INFO L225 Difference]: With dead ends: 87 [2020-10-13 05:26:48,201 INFO L226 Difference]: Without dead ends: 85 [2020-10-13 05:26:48,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=442, Invalid=2638, Unknown=0, NotChecked=0, Total=3080 [2020-10-13 05:26:48,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-13 05:26:48,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 65. [2020-10-13 05:26:48,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-13 05:26:48,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2020-10-13 05:26:48,222 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 42 [2020-10-13 05:26:48,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:48,223 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2020-10-13 05:26:48,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 05:26:48,223 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2020-10-13 05:26:48,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 05:26:48,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:48,225 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:48,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 05:26:48,225 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:48,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:48,225 INFO L82 PathProgramCache]: Analyzing trace with hash -957393475, now seen corresponding path program 5 times [2020-10-13 05:26:48,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:48,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659649710] [2020-10-13 05:26:48,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:48,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:48,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:48,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:50,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:50,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 05:26:50,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:26:50,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1922 [2020-10-13 05:26:50,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:50,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 05:26:50,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:26:50,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 05:26:50,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:50,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:50,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:50,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:50,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:50,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:50,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:26:50,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:50,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:50,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:50,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:50,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:50,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 05:26:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:50,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:50,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:50,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:50,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:50,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:26:50,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:50,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:50,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:50,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:50,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:50,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 05:26:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:50,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:50,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:50,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:50,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:50,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:26:50,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:50,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:50,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:50,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:50,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:50,365 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-13 05:26:50,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659649710] [2020-10-13 05:26:50,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:26:50,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 05:26:50,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821135421] [2020-10-13 05:26:50,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 05:26:50,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:50,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 05:26:50,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-13 05:26:50,368 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 13 states. [2020-10-13 05:26:50,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:50,837 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2020-10-13 05:26:50,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 05:26:50,838 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-10-13 05:26:50,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:50,840 INFO L225 Difference]: With dead ends: 101 [2020-10-13 05:26:50,840 INFO L226 Difference]: Without dead ends: 99 [2020-10-13 05:26:50,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2020-10-13 05:26:50,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-13 05:26:50,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 71. [2020-10-13 05:26:50,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-13 05:26:50,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2020-10-13 05:26:50,854 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 46 [2020-10-13 05:26:50,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:50,854 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2020-10-13 05:26:50,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 05:26:50,855 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2020-10-13 05:26:50,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 05:26:50,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:50,856 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:50,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 05:26:50,856 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:50,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:50,857 INFO L82 PathProgramCache]: Analyzing trace with hash -898222599, now seen corresponding path program 6 times [2020-10-13 05:26:50,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:50,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146610357] [2020-10-13 05:26:50,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:50,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:50,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:51,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:51,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:51,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:51,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:51,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:51,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:52,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:52,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 05:26:52,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 05:26:52,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1996 [2020-10-13 05:26:52,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:52,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 05:26:52,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:26:52,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 05:26:52,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:52,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:52,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:52,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:52,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:52,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:52,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:26:52,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:52,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:52,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:52,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:52,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:52,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 05:26:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:52,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:52,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:52,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:52,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:52,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:26:52,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:52,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:52,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:52,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:52,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:52,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 05:26:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:53,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:53,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:53,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:53,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:53,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:26:53,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:53,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:53,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:53,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:53,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:53,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 05:26:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:53,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:53,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:53,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:53,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:53,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:26:53,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:53,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:53,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:53,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:53,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:53,032 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 24 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 05:26:53,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146610357] [2020-10-13 05:26:53,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:26:53,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 05:26:53,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95566613] [2020-10-13 05:26:53,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 05:26:53,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:53,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 05:26:53,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-13 05:26:53,036 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand 12 states. [2020-10-13 05:26:53,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:53,450 INFO L93 Difference]: Finished difference Result 122 states and 129 transitions. [2020-10-13 05:26:53,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 05:26:53,451 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-10-13 05:26:53,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:53,453 INFO L225 Difference]: With dead ends: 122 [2020-10-13 05:26:53,454 INFO L226 Difference]: Without dead ends: 83 [2020-10-13 05:26:53,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-10-13 05:26:53,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-13 05:26:53,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 71. [2020-10-13 05:26:53,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-13 05:26:53,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-13 05:26:53,486 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 50 [2020-10-13 05:26:53,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:53,490 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-13 05:26:53,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 05:26:53,491 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-13 05:26:53,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 05:26:53,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:53,493 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:53,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 05:26:53,493 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:53,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:53,496 INFO L82 PathProgramCache]: Analyzing trace with hash 19194552, now seen corresponding path program 7 times [2020-10-13 05:26:53,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:53,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677873747] [2020-10-13 05:26:53,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:53,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:53,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:54,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:54,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:56,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:56,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 05:26:56,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:26:56,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2643 [2020-10-13 05:26:56,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:56,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 05:26:56,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:26:56,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 05:26:56,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:56,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:56,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:56,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:56,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:56,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:56,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:56,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:56,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:56,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:56,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:56,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:56,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 05:26:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:56,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:56,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:56,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:56,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:56,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:26:56,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:56,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:56,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:56,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:56,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:56,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 05:26:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:56,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:56,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:56,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:56,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:56,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:26:56,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:56,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:56,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:56,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:56,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:56,377 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 5 proven. 50 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-13 05:26:56,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677873747] [2020-10-13 05:26:56,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:26:56,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 05:26:56,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150302917] [2020-10-13 05:26:56,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 05:26:56,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:56,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 05:26:56,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-10-13 05:26:56,380 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 16 states. [2020-10-13 05:26:56,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:56,984 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2020-10-13 05:26:56,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 05:26:56,985 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 50 [2020-10-13 05:26:56,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:56,986 INFO L225 Difference]: With dead ends: 111 [2020-10-13 05:26:56,987 INFO L226 Difference]: Without dead ends: 109 [2020-10-13 05:26:56,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2020-10-13 05:26:56,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-13 05:26:57,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 75. [2020-10-13 05:26:57,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 05:26:57,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-10-13 05:26:57,012 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 50 [2020-10-13 05:26:57,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:57,013 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-10-13 05:26:57,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 05:26:57,013 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-10-13 05:26:57,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 05:26:57,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:57,015 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:57,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 05:26:57,016 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:57,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:57,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1529426572, now seen corresponding path program 8 times [2020-10-13 05:26:57,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:57,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589049299] [2020-10-13 05:26:57,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:57,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:57,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:57,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:57,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:57,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:58,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:58,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:00,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:00,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 05:27:00,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 05:27:00,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3008 [2020-10-13 05:27:00,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:00,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 05:27:00,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:27:00,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 05:27:00,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:27:00,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:27:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:00,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:00,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:00,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:27:00,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:00,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 05:27:00,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:00,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:00,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:00,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:00,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:00,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 05:27:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:00,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:00,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:00,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:00,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:00,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:27:00,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:00,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:00,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:00,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:00,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:00,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 05:27:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:00,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:00,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:00,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:00,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:00,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 05:27:00,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:00,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:27:00,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:00,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:27:00,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:00,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:27:00,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:00,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:00,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:00,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:00,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:00,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 05:27:00,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:00,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:27:00,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:00,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:27:00,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:01,107 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 41 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 05:27:01,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589049299] [2020-10-13 05:27:01,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:27:01,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-13 05:27:01,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329267312] [2020-10-13 05:27:01,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-13 05:27:01,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:27:01,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-13 05:27:01,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2020-10-13 05:27:01,112 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 26 states. [2020-10-13 05:27:04,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:27:04,061 INFO L93 Difference]: Finished difference Result 107 states and 117 transitions. [2020-10-13 05:27:04,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-13 05:27:04,062 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 54 [2020-10-13 05:27:04,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:27:04,064 INFO L225 Difference]: With dead ends: 107 [2020-10-13 05:27:04,065 INFO L226 Difference]: Without dead ends: 83 [2020-10-13 05:27:04,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 955 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=599, Invalid=3183, Unknown=0, NotChecked=0, Total=3782 [2020-10-13 05:27:04,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-13 05:27:04,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 75. [2020-10-13 05:27:04,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 05:27:04,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-13 05:27:04,078 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 54 [2020-10-13 05:27:04,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:27:04,078 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-13 05:27:04,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-13 05:27:04,078 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-13 05:27:04,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 05:27:04,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:27:04,079 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:27:04,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 05:27:04,080 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:27:04,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:27:04,080 INFO L82 PathProgramCache]: Analyzing trace with hash -612009421, now seen corresponding path program 9 times [2020-10-13 05:27:04,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:27:04,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72989662] [2020-10-13 05:27:04,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:27:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:04,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:04,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:04,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:04,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:05,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:06,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:06,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 05:27:06,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 05:27:06,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2234 [2020-10-13 05:27:06,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:06,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-13 05:27:06,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:27:06,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 05:27:06,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:07,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:27:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:07,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:07,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:07,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:27:07,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:07,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:07,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:07,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:07,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:07,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:07,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:07,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 05:27:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:07,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:07,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:07,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:07,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:07,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:27:07,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:07,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:07,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:07,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:07,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:07,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:27:07,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:07,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:07,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:07,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:07,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:07,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:27:07,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:07,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:27:07,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:07,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:27:07,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:07,169 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 6 proven. 62 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 05:27:07,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72989662] [2020-10-13 05:27:07,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:27:07,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 05:27:07,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878395531] [2020-10-13 05:27:07,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 05:27:07,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:27:07,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 05:27:07,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2020-10-13 05:27:07,173 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 22 states. [2020-10-13 05:27:08,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:27:08,778 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2020-10-13 05:27:08,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-13 05:27:08,780 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 54 [2020-10-13 05:27:08,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:27:08,781 INFO L225 Difference]: With dead ends: 85 [2020-10-13 05:27:08,782 INFO L226 Difference]: Without dead ends: 83 [2020-10-13 05:27:08,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 8 SyntacticMatches, 8 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=339, Invalid=1731, Unknown=0, NotChecked=0, Total=2070 [2020-10-13 05:27:08,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-13 05:27:08,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2020-10-13 05:27:08,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 05:27:08,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2020-10-13 05:27:08,801 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 54 [2020-10-13 05:27:08,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:27:08,801 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2020-10-13 05:27:08,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 05:27:08,802 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2020-10-13 05:27:08,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 05:27:08,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:27:08,803 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:27:08,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 05:27:08,803 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:27:08,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:27:08,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1512493201, now seen corresponding path program 10 times [2020-10-13 05:27:08,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:27:08,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048877023] [2020-10-13 05:27:08,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:27:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:08,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:08,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:09,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:09,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:09,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:10,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:10,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:11,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:11,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 05:27:11,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 05:27:11,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2370 [2020-10-13 05:27:11,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:11,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 05:27:11,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:27:11,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 05:27:11,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:12,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:27:12,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:12,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:12,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:12,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:27:12,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:12,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:12,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:12,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:12,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:12,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:12,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 05:27:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:12,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:12,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:12,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:12,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:12,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:27:12,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:12,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:12,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:12,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:12,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:12,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 05:27:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:12,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:12,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:12,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:12,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:12,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:27:12,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:12,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:12,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:12,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:12,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:12,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 05:27:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:12,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:12,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:12,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:12,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:12,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 05:27:12,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:12,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:27:12,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:12,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:27:12,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:12,164 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 11 proven. 64 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-13 05:27:12,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048877023] [2020-10-13 05:27:12,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:27:12,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 05:27:12,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194793969] [2020-10-13 05:27:12,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 05:27:12,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:27:12,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 05:27:12,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2020-10-13 05:27:12,167 INFO L87 Difference]: Start difference. First operand 81 states and 86 transitions. Second operand 25 states. [2020-10-13 05:27:12,867 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2020-10-13 05:27:13,105 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2020-10-13 05:27:13,267 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-13 05:27:13,528 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 87 [2020-10-13 05:27:13,703 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2020-10-13 05:27:14,027 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2020-10-13 05:27:14,332 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-10-13 05:27:14,522 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-10-13 05:27:15,076 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-13 05:27:15,258 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2020-10-13 05:27:15,423 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-13 05:27:16,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:27:16,443 INFO L93 Difference]: Finished difference Result 111 states and 119 transitions. [2020-10-13 05:27:16,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-13 05:27:16,444 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 58 [2020-10-13 05:27:16,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:27:16,445 INFO L225 Difference]: With dead ends: 111 [2020-10-13 05:27:16,446 INFO L226 Difference]: Without dead ends: 109 [2020-10-13 05:27:16,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 985 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=539, Invalid=3367, Unknown=0, NotChecked=0, Total=3906 [2020-10-13 05:27:16,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-13 05:27:16,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 89. [2020-10-13 05:27:16,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 05:27:16,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2020-10-13 05:27:16,460 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 58 [2020-10-13 05:27:16,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:27:16,460 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions. [2020-10-13 05:27:16,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 05:27:16,460 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions. [2020-10-13 05:27:16,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 05:27:16,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:27:16,461 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:27:16,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 05:27:16,461 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:27:16,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:27:16,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1164698646, now seen corresponding path program 11 times [2020-10-13 05:27:16,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:27:16,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783635714] [2020-10-13 05:27:16,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:27:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:16,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:16,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:16,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:17,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:18,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:19,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:19,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:19,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:19,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:19,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 05:27:19,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 05:27:19,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3455 [2020-10-13 05:27:19,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:19,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 05:27:19,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:27:19,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 05:27:19,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:27:20,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:27:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:20,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:20,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:20,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:27:20,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:20,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:20,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:20,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:20,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:20,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:20,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:20,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 05:27:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:20,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:20,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:20,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:20,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:20,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:20,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:20,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:20,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:20,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:20,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:20,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:27:20,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:20,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:20,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:20,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:20,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:20,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:20,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:20,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:20,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:20,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:20,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:20,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 05:27:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:20,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:20,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:20,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:20,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:20,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:20,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:20,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:20,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:20,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:20,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:20,289 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 9 proven. 79 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 05:27:20,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783635714] [2020-10-13 05:27:20,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:27:20,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 05:27:20,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070854731] [2020-10-13 05:27:20,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 05:27:20,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:27:20,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 05:27:20,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-10-13 05:27:20,291 INFO L87 Difference]: Start difference. First operand 89 states and 94 transitions. Second operand 18 states. [2020-10-13 05:27:21,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:27:21,087 INFO L93 Difference]: Finished difference Result 102 states and 107 transitions. [2020-10-13 05:27:21,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 05:27:21,092 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 62 [2020-10-13 05:27:21,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:27:21,095 INFO L225 Difference]: With dead ends: 102 [2020-10-13 05:27:21,095 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 05:27:21,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=799, Unknown=0, NotChecked=0, Total=930 [2020-10-13 05:27:21,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 05:27:21,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 89. [2020-10-13 05:27:21,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 05:27:21,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2020-10-13 05:27:21,117 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 62 [2020-10-13 05:27:21,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:27:21,118 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions. [2020-10-13 05:27:21,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 05:27:21,118 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions. [2020-10-13 05:27:21,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 05:27:21,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:27:21,119 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:27:21,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 05:27:21,119 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:27:21,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:27:21,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1536371418, now seen corresponding path program 12 times [2020-10-13 05:27:21,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:27:21,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148173779] [2020-10-13 05:27:21,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:27:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:21,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:21,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:21,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:21,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:21,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:22,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:22,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:22,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:23,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:23,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:23,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:23,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:24,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:25,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:25,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 05:27:25,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 05:27:25,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4293 [2020-10-13 05:27:25,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:25,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 05:27:25,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:27:25,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 05:27:25,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:26,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:27:26,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:26,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:26,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:26,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:27:26,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:26,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:26,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:26,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:26,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:26,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:26,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:26,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 05:27:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:26,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:26,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:26,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:26,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:26,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:26,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:26,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:26,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:26,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:26,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:26,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 05:27:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:26,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:26,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:26,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:26,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:26,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:27:26,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:26,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:27:26,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:26,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:27:26,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:26,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 05:27:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:26,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:26,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:26,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:26,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:26,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:27:26,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:26,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:26,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:26,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:26,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:26,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:27:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:26,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:26,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:26,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:26,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:26,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:26,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:26,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:26,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:26,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:26,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:26,299 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 05:27:26,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148173779] [2020-10-13 05:27:26,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:27:26,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 05:27:26,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770051887] [2020-10-13 05:27:26,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-13 05:27:26,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:27:26,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-13 05:27:26,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2020-10-13 05:27:26,302 INFO L87 Difference]: Start difference. First operand 89 states and 94 transitions. Second operand 24 states. [2020-10-13 05:27:28,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:27:28,882 INFO L93 Difference]: Finished difference Result 117 states and 125 transitions. [2020-10-13 05:27:28,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-13 05:27:28,883 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 66 [2020-10-13 05:27:28,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:27:28,884 INFO L225 Difference]: With dead ends: 117 [2020-10-13 05:27:28,884 INFO L226 Difference]: Without dead ends: 79 [2020-10-13 05:27:28,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 11 SyntacticMatches, 5 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=399, Invalid=2357, Unknown=0, NotChecked=0, Total=2756 [2020-10-13 05:27:28,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-13 05:27:28,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 71. [2020-10-13 05:27:28,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-13 05:27:28,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2020-10-13 05:27:28,894 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 66 [2020-10-13 05:27:28,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:27:28,894 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2020-10-13 05:27:28,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-13 05:27:28,895 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2020-10-13 05:27:28,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 05:27:28,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:27:28,895 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:27:28,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 05:27:28,896 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:27:28,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:27:28,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1302522207, now seen corresponding path program 13 times [2020-10-13 05:27:28,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:27:28,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273751763] [2020-10-13 05:27:28,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:27:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:28,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:29,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:29,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:29,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:29,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:29,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:29,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:30,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:30,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:30,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:31,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:31,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:31,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:33,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:33,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 05:27:33,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 05:27:33,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 05:27:33,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:33,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 05:27:33,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:27:33,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 05:27:33,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:34,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:27:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:34,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:34,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:34,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:27:34,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:34,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:34,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:34,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:34,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:34,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:34,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:34,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 05:27:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:34,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:34,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:34,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:34,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:34,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:34,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:34,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:34,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:34,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:34,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:34,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:27:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:34,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:34,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:34,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:34,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:34,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:34,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:34,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:27:34,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:34,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:27:34,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:34,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 05:27:34,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:34,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:34,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:34,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:34,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:34,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:34,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:34,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:34,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:34,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:34,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:34,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 05:27:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:34,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:34,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:34,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:34,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:34,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:34,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:34,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:34,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:34,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:34,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:34,737 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 10 proven. 105 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 05:27:34,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273751763] [2020-10-13 05:27:34,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:27:34,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 05:27:34,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583926947] [2020-10-13 05:27:34,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 05:27:34,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:27:34,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 05:27:34,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2020-10-13 05:27:34,740 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand 25 states. [2020-10-13 05:27:35,463 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-10-13 05:27:37,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:27:37,451 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2020-10-13 05:27:37,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-13 05:27:37,451 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 70 [2020-10-13 05:27:37,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:27:37,453 INFO L225 Difference]: With dead ends: 115 [2020-10-13 05:27:37,453 INFO L226 Difference]: Without dead ends: 113 [2020-10-13 05:27:37,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 12 SyntacticMatches, 6 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=496, Invalid=3164, Unknown=0, NotChecked=0, Total=3660 [2020-10-13 05:27:37,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-13 05:27:37,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 97. [2020-10-13 05:27:37,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-13 05:27:37,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 105 transitions. [2020-10-13 05:27:37,467 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 105 transitions. Word has length 70 [2020-10-13 05:27:37,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:27:37,467 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 105 transitions. [2020-10-13 05:27:37,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 05:27:37,468 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 105 transitions. [2020-10-13 05:27:37,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-13 05:27:37,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:27:37,469 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:27:37,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 05:27:37,469 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:27:37,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:27:37,469 INFO L82 PathProgramCache]: Analyzing trace with hash -485875044, now seen corresponding path program 14 times [2020-10-13 05:27:37,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:27:37,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496281248] [2020-10-13 05:27:37,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:27:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:37,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:37,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:37,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:37,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:38,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:38,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:39,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:39,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:39,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:40,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:40,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:40,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:40,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:41,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:42,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:42,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 05:27:42,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 05:27:42,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 05:27:42,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:42,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-13 05:27:42,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:27:42,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 05:27:42,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:44,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:27:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:44,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:44,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:44,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:27:44,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:44,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:44,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:44,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:44,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:44,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:44,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:44,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 05:27:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:44,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:44,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:44,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:44,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:44,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:44,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:44,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:44,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:44,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:44,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:44,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 05:27:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:44,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:44,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:44,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:44,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:44,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 05:27:44,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:44,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:27:44,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:44,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:27:44,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:44,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:27:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:44,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:44,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:44,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:44,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:44,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 05:27:44,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:44,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:27:44,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:44,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:27:44,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:44,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 05:27:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:44,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:44,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:44,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:44,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:44,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:44,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:44,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:44,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:44,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:44,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:44,387 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 13 proven. 125 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-13 05:27:44,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496281248] [2020-10-13 05:27:44,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:27:44,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 05:27:44,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132174184] [2020-10-13 05:27:44,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 05:27:44,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:27:44,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 05:27:44,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=697, Unknown=0, NotChecked=0, Total=812 [2020-10-13 05:27:44,390 INFO L87 Difference]: Start difference. First operand 97 states and 105 transitions. Second operand 29 states. [2020-10-13 05:27:46,320 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 54 [2020-10-13 05:27:46,666 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2020-10-13 05:27:46,892 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2020-10-13 05:27:47,164 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 68 [2020-10-13 05:27:48,334 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-10-13 05:27:48,641 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2020-10-13 05:27:48,836 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2020-10-13 05:27:49,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:27:49,713 INFO L93 Difference]: Finished difference Result 109 states and 118 transitions. [2020-10-13 05:27:49,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-13 05:27:49,714 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 74 [2020-10-13 05:27:49,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:27:49,717 INFO L225 Difference]: With dead ends: 109 [2020-10-13 05:27:49,717 INFO L226 Difference]: Without dead ends: 107 [2020-10-13 05:27:49,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 13 SyntacticMatches, 7 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1161 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=632, Invalid=4060, Unknown=0, NotChecked=0, Total=4692 [2020-10-13 05:27:49,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-13 05:27:49,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 75. [2020-10-13 05:27:49,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 05:27:49,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2020-10-13 05:27:49,730 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 74 [2020-10-13 05:27:49,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:27:49,730 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2020-10-13 05:27:49,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 05:27:49,730 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2020-10-13 05:27:49,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 05:27:49,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:27:49,731 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:27:49,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 05:27:49,732 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:27:49,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:27:49,732 INFO L82 PathProgramCache]: Analyzing trace with hash 863464024, now seen corresponding path program 15 times [2020-10-13 05:27:49,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:27:49,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927332152] [2020-10-13 05:27:49,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:27:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:49,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:49,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:49,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:50,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:50,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:50,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:51,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:51,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:51,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:51,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:51,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:52,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:52,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:54,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:54,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:54,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:54,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 05:27:54,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 05:27:54,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 05:27:54,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:54,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-13 05:27:54,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:27:54,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 05:27:54,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:56,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:27:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:56,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:56,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:56,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:27:56,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:56,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:56,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:56,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:56,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:56,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:56,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:56,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 05:27:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:56,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:56,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:56,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:56,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:56,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:56,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:56,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:56,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:56,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:56,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:56,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:27:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:56,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:56,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:56,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:56,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:56,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:56,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:56,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:56,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:56,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:56,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:56,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 05:27:56,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:56,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:56,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:56,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:56,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:56,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:27:56,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:56,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:27:56,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:56,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:27:56,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:56,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 05:27:56,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:56,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:56,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:56,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:56,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:56,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:27:56,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:56,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:27:56,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:56,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:27:56,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:56,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 05:27:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:56,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:56,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:56,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:56,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:56,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:56,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:56,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:56,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:56,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:56,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:56,194 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 28 proven. 116 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-13 05:27:56,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927332152] [2020-10-13 05:27:56,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:27:56,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-13 05:27:56,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375012486] [2020-10-13 05:27:56,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-13 05:27:56,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:27:56,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-13 05:27:56,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2020-10-13 05:27:56,196 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand 28 states. [2020-10-13 05:27:56,862 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-13 05:27:57,940 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-13 05:27:59,000 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-13 05:27:59,182 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-10-13 05:27:59,337 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-10-13 05:28:00,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:00,816 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2020-10-13 05:28:00,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-13 05:28:00,818 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 78 [2020-10-13 05:28:00,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:00,819 INFO L225 Difference]: With dead ends: 115 [2020-10-13 05:28:00,819 INFO L226 Difference]: Without dead ends: 83 [2020-10-13 05:28:00,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1268 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=614, Invalid=4498, Unknown=0, NotChecked=0, Total=5112 [2020-10-13 05:28:00,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-13 05:28:00,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2020-10-13 05:28:00,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 05:28:00,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2020-10-13 05:28:00,832 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 78 [2020-10-13 05:28:00,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:00,833 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2020-10-13 05:28:00,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-13 05:28:00,833 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2020-10-13 05:28:00,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 05:28:00,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:00,834 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:00,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 05:28:00,834 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:00,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:00,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1224586413, now seen corresponding path program 16 times [2020-10-13 05:28:00,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:00,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286923154] [2020-10-13 05:28:00,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:00,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:00,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:01,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:01,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:02,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:03,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:03,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:03,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:03,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:05,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:05,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:05,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 05:28:05,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 05:28:05,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-13 05:28:05,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:05,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-13 05:28:05,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:28:05,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 05:28:05,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:07,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:07,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:07,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:28:07,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:07,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:07,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:07,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:07,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:07,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:07,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:07,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 05:28:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:07,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:07,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:07,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:07,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:07,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:07,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:07,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:07,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:07,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:07,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 05:28:07,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:07,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:07,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:07,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:07,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:28:07,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:07,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:28:07,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:07,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:28:07,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:07,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:28:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:07,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:07,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:07,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:07,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:07,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:07,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:07,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:07,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:07,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:07,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 05:28:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:07,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:07,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:07,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:07,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:07,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:07,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:07,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:07,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:07,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:07,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 05:28:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:07,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:07,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:07,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:07,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:07,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:07,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:07,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:07,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:07,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:07,112 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 12 proven. 150 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-13 05:28:07,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286923154] [2020-10-13 05:28:07,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:28:07,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-13 05:28:07,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158303443] [2020-10-13 05:28:07,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-13 05:28:07,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:07,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-13 05:28:07,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2020-10-13 05:28:07,114 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand 28 states. [2020-10-13 05:28:07,976 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-10-13 05:28:08,299 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2020-10-13 05:28:09,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:09,944 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2020-10-13 05:28:09,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-13 05:28:09,945 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 82 [2020-10-13 05:28:09,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:09,947 INFO L225 Difference]: With dead ends: 93 [2020-10-13 05:28:09,947 INFO L226 Difference]: Without dead ends: 91 [2020-10-13 05:28:09,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 13 SyntacticMatches, 9 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=461, Invalid=2961, Unknown=0, NotChecked=0, Total=3422 [2020-10-13 05:28:09,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-13 05:28:09,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2020-10-13 05:28:09,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-13 05:28:09,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2020-10-13 05:28:09,963 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 82 [2020-10-13 05:28:09,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:09,964 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 90 transitions. [2020-10-13 05:28:09,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-13 05:28:09,964 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 90 transitions. [2020-10-13 05:28:09,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 05:28:09,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:09,965 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:09,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 05:28:09,965 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:09,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:09,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1052914422, now seen corresponding path program 17 times [2020-10-13 05:28:09,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:09,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064330244] [2020-10-13 05:28:09,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:09,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:11,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:11,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:11,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:11,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:14,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:14,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 05:28:14,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 05:28:14,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 05:28:14,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:14,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-13 05:28:14,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:28:14,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 05:28:14,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:16,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:16,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:16,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:16,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:28:16,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:16,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:16,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:16,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:16,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:16,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:16,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:16,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 05:28:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:16,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:16,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:16,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:16,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:16,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:28:16,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:16,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:16,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:16,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:16,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:16,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 05:28:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:16,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:16,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:16,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:16,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:16,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:28:16,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:16,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:16,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:16,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:16,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:16,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:28:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:16,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:16,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:16,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:16,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:16,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:28:16,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:16,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:16,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:16,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:16,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:16,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 05:28:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:16,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:16,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:16,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:16,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:16,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 05:28:16,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:16,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:28:16,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:16,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:28:16,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:16,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 05:28:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:16,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:16,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:16,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:16,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:16,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:28:16,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:16,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:28:16,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:16,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:28:16,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:16,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 05:28:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:16,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:16,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:16,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:16,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:16,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:16,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:16,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:16,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:16,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:16,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:17,001 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 29 proven. 171 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-13 05:28:17,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064330244] [2020-10-13 05:28:17,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:28:17,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-13 05:28:17,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240318507] [2020-10-13 05:28:17,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-13 05:28:17,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:17,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-13 05:28:17,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=867, Unknown=0, NotChecked=0, Total=992 [2020-10-13 05:28:17,004 INFO L87 Difference]: Start difference. First operand 87 states and 90 transitions. Second operand 32 states. [2020-10-13 05:28:17,995 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-10-13 05:28:19,178 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2020-10-13 05:28:19,596 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 88 [2020-10-13 05:28:19,944 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2020-10-13 05:28:20,373 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2020-10-13 05:28:20,715 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2020-10-13 05:28:21,189 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 87 [2020-10-13 05:28:21,484 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-10-13 05:28:21,760 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2020-10-13 05:28:22,205 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2020-10-13 05:28:25,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:25,627 INFO L93 Difference]: Finished difference Result 141 states and 154 transitions. [2020-10-13 05:28:25,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-10-13 05:28:25,628 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 90 [2020-10-13 05:28:25,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:25,629 INFO L225 Difference]: With dead ends: 141 [2020-10-13 05:28:25,630 INFO L226 Difference]: Without dead ends: 139 [2020-10-13 05:28:25,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 15 SyntacticMatches, 4 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2632 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=1076, Invalid=8236, Unknown=0, NotChecked=0, Total=9312 [2020-10-13 05:28:25,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-13 05:28:25,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 121. [2020-10-13 05:28:25,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-13 05:28:25,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 132 transitions. [2020-10-13 05:28:25,649 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 132 transitions. Word has length 90 [2020-10-13 05:28:25,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:25,649 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 132 transitions. [2020-10-13 05:28:25,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-13 05:28:25,650 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 132 transitions. [2020-10-13 05:28:25,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 05:28:25,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:25,651 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:25,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 05:28:25,651 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:25,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:25,652 INFO L82 PathProgramCache]: Analyzing trace with hash -974123643, now seen corresponding path program 18 times [2020-10-13 05:28:25,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:25,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671408414] [2020-10-13 05:28:25,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:25,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:25,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:25,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:28,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:28,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:29,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:30,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 05:28:30,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 05:28:30,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-13 05:28:30,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:30,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-13 05:28:30,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:28:30,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 05:28:30,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:32,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:32,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:32,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:28:32,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:32,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:32,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:32,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:32,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:32,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:32,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:32,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:28:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:32,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:32,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:32,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:32,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:32,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:32,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:32,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 05:28:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:32,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:32,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:32,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:32,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 05:28:32,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:32,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:28:32,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:32,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:28:32,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:32,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 05:28:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:32,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:32,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:32,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:32,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:32,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:32,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:32,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:32,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:32,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:32,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 05:28:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:32,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:32,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:32,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:32,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:28:32,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:32,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:32,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:32,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:32,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:32,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 05:28:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:32,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:32,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:32,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:32,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:32,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:32,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:32,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:32,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:32,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:32,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 05:28:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:32,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:32,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:32,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:32,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:32,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:32,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:32,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:32,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:32,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:32,555 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 14 proven. 204 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-10-13 05:28:32,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671408414] [2020-10-13 05:28:32,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:28:32,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 05:28:32,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064126762] [2020-10-13 05:28:32,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 05:28:32,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:32,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 05:28:32,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=677, Unknown=0, NotChecked=0, Total=812 [2020-10-13 05:28:32,558 INFO L87 Difference]: Start difference. First operand 121 states and 132 transitions. Second operand 29 states. [2020-10-13 05:28:34,514 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-13 05:28:36,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:36,128 INFO L93 Difference]: Finished difference Result 135 states and 147 transitions. [2020-10-13 05:28:36,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-13 05:28:36,134 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 94 [2020-10-13 05:28:36,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:36,136 INFO L225 Difference]: With dead ends: 135 [2020-10-13 05:28:36,136 INFO L226 Difference]: Without dead ends: 133 [2020-10-13 05:28:36,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 16 SyntacticMatches, 11 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1077 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=618, Invalid=3672, Unknown=0, NotChecked=0, Total=4290 [2020-10-13 05:28:36,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-13 05:28:36,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 91. [2020-10-13 05:28:36,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 05:28:36,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-13 05:28:36,151 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 94 [2020-10-13 05:28:36,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:36,151 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-13 05:28:36,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 05:28:36,151 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-13 05:28:36,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 05:28:36,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:36,152 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:36,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 05:28:36,152 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:36,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:36,153 INFO L82 PathProgramCache]: Analyzing trace with hash -648828991, now seen corresponding path program 19 times [2020-10-13 05:28:36,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:36,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284013126] [2020-10-13 05:28:36,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:36,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:39,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:41,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:41,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:41,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 05:28:41,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 05:28:41,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 05:28:41,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:41,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-13 05:28:41,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:28:41,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 05:28:41,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:41,530 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 29 [2020-10-13 05:28:41,798 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 25 [2020-10-13 05:28:43,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:43,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:43,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:28:43,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:43,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:43,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:43,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:43,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:43,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:43,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:43,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 05:28:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:43,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:43,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:43,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:43,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:43,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:43,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:43,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:43,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:43,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:43,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 05:28:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:43,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:43,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:43,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:43,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:28:43,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:43,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:28:43,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:43,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:28:43,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:43,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:28:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:43,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:43,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:43,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:43,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:28:43,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:43,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:28:43,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:43,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:28:43,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:43,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 05:28:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:43,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:43,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:43,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:43,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:43,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:43,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:28:43,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:43,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:28:43,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:43,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 05:28:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:43,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:43,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:43,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:43,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:43,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:43,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:43,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:43,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:43,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:43,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 05:28:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:43,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:43,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:43,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:43,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:43,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:43,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:43,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:43,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:43,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:43,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 05:28:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:43,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:43,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:43,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:43,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:43,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:43,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:43,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:43,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:43,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:43,294 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 96 proven. 143 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-13 05:28:43,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284013126] [2020-10-13 05:28:43,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:28:43,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-13 05:28:43,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071820478] [2020-10-13 05:28:43,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-13 05:28:43,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:43,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-13 05:28:43,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=790, Unknown=0, NotChecked=0, Total=992 [2020-10-13 05:28:43,296 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 32 states. [2020-10-13 05:28:43,794 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-10-13 05:28:47,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:47,536 INFO L93 Difference]: Finished difference Result 146 states and 159 transitions. [2020-10-13 05:28:47,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-13 05:28:47,537 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 98 [2020-10-13 05:28:47,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:47,538 INFO L225 Difference]: With dead ends: 146 [2020-10-13 05:28:47,538 INFO L226 Difference]: Without dead ends: 103 [2020-10-13 05:28:47,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 18 SyntacticMatches, 7 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1474 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=953, Invalid=4159, Unknown=0, NotChecked=0, Total=5112 [2020-10-13 05:28:47,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-13 05:28:47,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 95. [2020-10-13 05:28:47,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-13 05:28:47,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-13 05:28:47,558 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 98 [2020-10-13 05:28:47,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:47,558 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-13 05:28:47,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-13 05:28:47,558 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-13 05:28:47,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 05:28:47,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:47,559 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:47,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 05:28:47,559 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:47,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:47,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1688681788, now seen corresponding path program 20 times [2020-10-13 05:28:47,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:47,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868453909] [2020-10-13 05:28:47,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:47,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:52,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 05:28:52,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 05:28:52,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 05:28:52,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:52,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-13 05:28:52,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:28:52,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 05:28:52,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:54,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:54,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:54,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:28:54,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:54,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:54,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:54,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:54,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:54,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:54,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:54,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:28:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:54,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:54,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:54,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:54,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:28:54,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:54,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:54,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:54,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:54,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:54,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 05:28:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:54,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:54,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:54,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:54,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:28:54,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:54,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:28:54,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:54,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:28:54,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:55,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 05:28:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:55,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:55,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:55,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:55,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:55,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:28:55,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:55,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:28:55,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:55,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:28:55,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:55,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 05:28:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:55,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:55,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:55,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:55,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:55,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:55,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:55,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:55,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:55,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:55,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:55,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 05:28:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:55,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:55,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:55,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:55,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:55,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:55,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:55,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:55,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:55,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:55,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:55,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 05:28:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:55,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:55,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:55,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:55,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:55,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:55,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:55,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:55,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:55,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:55,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:55,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 05:28:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:55,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:55,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:55,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:55,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:55,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:55,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:55,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:55,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:55,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:55,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:55,134 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 95 proven. 168 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-10-13 05:28:55,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868453909] [2020-10-13 05:28:55,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:28:55,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-13 05:28:55,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105170000] [2020-10-13 05:28:55,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-13 05:28:55,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:55,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-13 05:28:55,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=894, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 05:28:55,136 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 33 states. [2020-10-13 05:28:55,767 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 53 [2020-10-13 05:28:55,944 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 41 [2020-10-13 05:28:56,259 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2020-10-13 05:28:56,420 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2020-10-13 05:28:56,768 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2020-10-13 05:28:56,936 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2020-10-13 05:28:57,297 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 54 [2020-10-13 05:28:57,476 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 41 [2020-10-13 05:28:57,875 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2020-10-13 05:28:58,086 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2020-10-13 05:28:58,489 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 54 [2020-10-13 05:28:58,702 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 41 [2020-10-13 05:28:58,884 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-10-13 05:28:59,144 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 54 [2020-10-13 05:28:59,318 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-10-13 05:28:59,540 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 42 [2020-10-13 05:28:59,753 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-13 05:29:00,228 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 43 [2020-10-13 05:29:01,311 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-13 05:29:01,723 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-10-13 05:29:01,995 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 58 [2020-10-13 05:29:02,230 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 57 [2020-10-13 05:29:02,451 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2020-10-13 05:29:02,706 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 59 [2020-10-13 05:29:04,638 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-10-13 05:29:04,999 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-10-13 05:29:05,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:29:05,768 INFO L93 Difference]: Finished difference Result 143 states and 156 transitions. [2020-10-13 05:29:05,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-10-13 05:29:05,770 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 102 [2020-10-13 05:29:05,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:29:05,771 INFO L225 Difference]: With dead ends: 143 [2020-10-13 05:29:05,772 INFO L226 Difference]: Without dead ends: 103 [2020-10-13 05:29:05,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 17 SyntacticMatches, 10 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2344 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=1248, Invalid=7124, Unknown=0, NotChecked=0, Total=8372 [2020-10-13 05:29:05,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-13 05:29:05,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2020-10-13 05:29:05,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-13 05:29:05,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-13 05:29:05,792 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 102 [2020-10-13 05:29:05,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:29:05,792 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-13 05:29:05,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-13 05:29:05,793 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-13 05:29:05,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 05:29:05,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:29:05,794 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:29:05,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 05:29:05,794 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:29:05,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:29:05,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1223531831, now seen corresponding path program 21 times [2020-10-13 05:29:05,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:29:05,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862734633] [2020-10-13 05:29:05,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:29:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:05,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:09,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:09,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:10,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 05:29:10,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 05:29:10,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 05:29:10,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:10,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 05:29:10,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:29:10,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-13 05:29:10,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:11,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:29:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:11,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:11,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:29:11,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:11,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:11,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:11,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:29:11,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:11,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:29:11,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:11,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 05:29:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:11,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:11,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:11,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:11,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:11,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:11,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:11,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:11,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:11,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:11,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:29:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:11,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:11,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:11,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:11,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:11,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:11,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:11,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:11,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:11,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:11,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 05:29:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:11,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:11,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:11,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:11,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:11,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:11,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:11,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:11,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:11,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:11,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 05:29:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:11,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:11,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:11,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:11,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:11,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:11,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:11,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:11,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:11,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:11,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 05:29:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:11,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:11,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:11,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:11,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:11,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:11,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:11,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:11,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:11,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:11,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 05:29:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:11,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:11,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:11,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:11,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:29:11,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:11,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:11,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:11,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:11,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:11,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 05:29:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:11,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:11,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:11,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:11,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:29:11,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:11,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:11,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:11,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:11,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:11,509 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 14 proven. 249 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-13 05:29:11,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862734633] [2020-10-13 05:29:11,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:29:11,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 05:29:11,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915908943] [2020-10-13 05:29:11,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 05:29:11,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:29:11,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 05:29:11,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-13 05:29:11,511 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 23 states. [2020-10-13 05:29:14,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:29:14,151 INFO L93 Difference]: Finished difference Result 155 states and 169 transitions. [2020-10-13 05:29:14,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-13 05:29:14,153 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 106 [2020-10-13 05:29:14,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:29:14,155 INFO L225 Difference]: With dead ends: 155 [2020-10-13 05:29:14,155 INFO L226 Difference]: Without dead ends: 153 [2020-10-13 05:29:14,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=136, Invalid=1586, Unknown=0, NotChecked=0, Total=1722 [2020-10-13 05:29:14,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-13 05:29:14,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 141. [2020-10-13 05:29:14,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-13 05:29:14,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 153 transitions. [2020-10-13 05:29:14,176 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 153 transitions. Word has length 106 [2020-10-13 05:29:14,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:29:14,177 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 153 transitions. [2020-10-13 05:29:14,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 05:29:14,177 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 153 transitions. [2020-10-13 05:29:14,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 05:29:14,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:29:14,178 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:29:14,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 05:29:14,179 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:29:14,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:29:14,179 INFO L82 PathProgramCache]: Analyzing trace with hash -490895438, now seen corresponding path program 22 times [2020-10-13 05:29:14,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:29:14,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236523596] [2020-10-13 05:29:14,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:29:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:14,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:14,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:14,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:16,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:19,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:19,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:19,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:19,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 05:29:19,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 05:29:19,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5232 [2020-10-13 05:29:19,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:19,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 52 [2020-10-13 05:29:19,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:29:19,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-13 05:29:19,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:20,267 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 27 [2020-10-13 05:29:20,451 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 26 [2020-10-13 05:29:20,699 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 27 [2020-10-13 05:29:20,935 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 27 [2020-10-13 05:29:21,249 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 27 [2020-10-13 05:29:21,445 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2020-10-13 05:29:21,617 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 30 [2020-10-13 05:29:21,866 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 36 [2020-10-13 05:29:24,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:29:24,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:24,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:24,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:24,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:29:24,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:24,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:24,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:24,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:29:24,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:24,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:29:24,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:24,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 05:29:24,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:24,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:24,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:24,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:24,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:24,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:29:24,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:24,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:24,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:24,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:24,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:24,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 05:29:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:24,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:24,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:24,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:24,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:24,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:29:24,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:24,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:29:24,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:24,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:29:24,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:24,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 05:29:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:24,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:24,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:24,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:24,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:24,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:29:24,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:24,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:29:24,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:24,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:29:24,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:24,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 05:29:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:24,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:24,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:24,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:24,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:24,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:29:24,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:24,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:29:24,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:24,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:29:24,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:24,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 05:29:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:24,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:24,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:24,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:24,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:24,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:24,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:24,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:24,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:24,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:24,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:24,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 05:29:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:24,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:24,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:24,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:24,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:24,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:24,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:24,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:24,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:24,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:24,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:24,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 05:29:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:24,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:24,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:24,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:24,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:24,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:29:24,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:24,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:24,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:24,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:24,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:24,597 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 23 proven. 312 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-13 05:29:24,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236523596] [2020-10-13 05:29:24,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:29:24,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-13 05:29:24,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241747021] [2020-10-13 05:29:24,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-13 05:29:24,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:29:24,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-13 05:29:24,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1292, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 05:29:24,599 INFO L87 Difference]: Start difference. First operand 141 states and 153 transitions. Second operand 39 states. [2020-10-13 05:29:25,150 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2020-10-13 05:29:25,579 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2020-10-13 05:29:25,932 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2020-10-13 05:29:26,480 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-10-13 05:29:26,814 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2020-10-13 05:29:27,078 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-10-13 05:29:27,386 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-10-13 05:29:27,712 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 70 [2020-10-13 05:29:28,379 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2020-10-13 05:29:29,052 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2020-10-13 05:29:29,722 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2020-10-13 05:29:30,514 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2020-10-13 05:29:30,907 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-13 05:29:31,252 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-10-13 05:29:31,456 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-13 05:29:31,924 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2020-10-13 05:29:32,398 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-13 05:29:32,957 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2020-10-13 05:29:33,967 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-10-13 05:29:34,415 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2020-10-13 05:29:34,778 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-10-13 05:29:35,064 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-13 05:29:39,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:29:39,881 INFO L93 Difference]: Finished difference Result 151 states and 164 transitions. [2020-10-13 05:29:39,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-13 05:29:39,884 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 110 [2020-10-13 05:29:39,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:29:39,885 INFO L225 Difference]: With dead ends: 151 [2020-10-13 05:29:39,885 INFO L226 Difference]: Without dead ends: 149 [2020-10-13 05:29:39,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 18 SyntacticMatches, 12 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2560 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=1191, Invalid=8121, Unknown=0, NotChecked=0, Total=9312 [2020-10-13 05:29:39,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-13 05:29:39,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 145. [2020-10-13 05:29:39,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-13 05:29:39,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 158 transitions. [2020-10-13 05:29:39,916 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 158 transitions. Word has length 110 [2020-10-13 05:29:39,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:29:39,917 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 158 transitions. [2020-10-13 05:29:39,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-13 05:29:39,917 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 158 transitions. [2020-10-13 05:29:39,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 05:29:39,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:29:39,920 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:29:39,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 05:29:39,920 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:29:39,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:29:39,920 INFO L82 PathProgramCache]: Analyzing trace with hash -331678994, now seen corresponding path program 23 times [2020-10-13 05:29:39,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:29:39,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575031221] [2020-10-13 05:29:39,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:29:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:39,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:40,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:40,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:40,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:41,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:44,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:44,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:44,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:45,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:45,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 05:29:45,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 05:29:45,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5179 [2020-10-13 05:29:45,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:45,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 49 [2020-10-13 05:29:45,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:29:45,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 05:29:45,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:46,020 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-10-13 05:29:46,178 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2020-10-13 05:29:46,488 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 41 [2020-10-13 05:29:46,917 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 38 [2020-10-13 05:29:47,469 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 40 [2020-10-13 05:29:48,076 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 39 [2020-10-13 05:29:48,647 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 40 [2020-10-13 05:29:49,083 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2020-10-13 05:29:49,367 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2020-10-13 05:29:49,672 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2020-10-13 05:29:50,008 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2020-10-13 05:29:50,353 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2020-10-13 05:29:50,693 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2020-10-13 05:29:51,003 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 38 [2020-10-13 05:29:51,277 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 37 [2020-10-13 05:29:51,553 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 36 [2020-10-13 05:29:51,794 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 32 [2020-10-13 05:29:52,011 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 30 [2020-10-13 05:29:52,228 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 29 [2020-10-13 05:29:52,434 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 24 [2020-10-13 05:29:52,643 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 23 [2020-10-13 05:29:52,849 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 23 [2020-10-13 05:29:53,066 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 24 [2020-10-13 05:29:53,275 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 23 [2020-10-13 05:29:53,468 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 17 [2020-10-13 05:29:53,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:29:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:53,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:53,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:53,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:29:53,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:53,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:53,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:53,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:29:53,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:53,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:29:53,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:53,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 05:29:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:53,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:53,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:53,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:53,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:53,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:29:53,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:53,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:53,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:53,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:53,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:53,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:29:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:53,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:53,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:53,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:53,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:53,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 05:29:53,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:53,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:29:53,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:53,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:29:53,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:53,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 05:29:53,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:53,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:53,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:53,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:53,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:53,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:29:53,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:53,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:29:53,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:53,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:29:53,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:54,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 05:29:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:54,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:54,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:54,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:54,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:54,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:29:54,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:54,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:29:54,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:54,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:29:54,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:54,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 05:29:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:54,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:54,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:54,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:54,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:54,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:29:54,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:54,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:54,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:54,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:54,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:54,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 05:29:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:54,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:54,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:54,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:54,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:54,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:29:54,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:54,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:54,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:54,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:54,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:54,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 05:29:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:54,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:54,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:54,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:54,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:54,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:29:54,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:54,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:54,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:54,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:54,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:54,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 05:29:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:54,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:54,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:54,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:54,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:54,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:29:54,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:54,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:54,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:54,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:54,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:54,153 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 124 proven. 218 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-13 05:29:54,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575031221] [2020-10-13 05:29:54,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:29:54,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-13 05:29:54,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084434315] [2020-10-13 05:29:54,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-13 05:29:54,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:29:54,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-13 05:29:54,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1120, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 05:29:54,155 INFO L87 Difference]: Start difference. First operand 145 states and 158 transitions. Second operand 37 states. [2020-10-13 05:29:54,749 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2020-10-13 05:29:55,199 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 28 [2020-10-13 05:29:55,437 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-10-13 05:29:56,095 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2020-10-13 05:29:56,883 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2020-10-13 05:29:57,369 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2020-10-13 05:29:58,075 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 90 [2020-10-13 05:29:59,029 WARN L193 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 94 [2020-10-13 05:29:59,658 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2020-10-13 05:30:00,233 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 94 [2020-10-13 05:30:01,054 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 93 [2020-10-13 05:30:01,893 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 82 [2020-10-13 05:30:02,598 WARN L193 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 99 [2020-10-13 05:30:03,493 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 91 [2020-10-13 05:30:04,362 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2020-10-13 05:30:05,201 WARN L193 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 100 [2020-10-13 05:30:06,086 WARN L193 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 92 [2020-10-13 05:30:06,955 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 82 [2020-10-13 05:30:07,760 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 99 [2020-10-13 05:30:08,747 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 91 [2020-10-13 05:30:09,773 WARN L193 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2020-10-13 05:30:10,683 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 100 [2020-10-13 05:30:11,657 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 92 [2020-10-13 05:30:12,689 WARN L193 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 82 [2020-10-13 05:30:13,720 WARN L193 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 99 [2020-10-13 05:30:14,384 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-10-13 05:30:15,573 WARN L193 SmtUtils]: Spent 799.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 91 [2020-10-13 05:30:16,913 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-10-13 05:30:17,476 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2020-10-13 05:30:17,977 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-13 05:30:18,621 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2020-10-13 05:30:19,238 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-13 05:30:20,014 WARN L193 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 67 [2020-10-13 05:30:20,359 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 30 [2020-10-13 05:30:21,647 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-13 05:30:22,377 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-13 05:30:23,013 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-13 05:30:24,118 WARN L193 SmtUtils]: Spent 857.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 111 [2020-10-13 05:30:25,232 WARN L193 SmtUtils]: Spent 905.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 103 [2020-10-13 05:30:25,772 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-13 05:30:26,322 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-13 05:30:26,987 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-13 05:30:27,419 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-13 05:30:27,986 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-13 05:30:28,980 WARN L193 SmtUtils]: Spent 794.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 94 [2020-10-13 05:30:29,600 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-13 05:30:29,991 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-13 05:30:30,343 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-13 05:30:30,925 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-13 05:30:31,367 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-13 05:30:31,918 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-13 05:30:32,234 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-13 05:30:32,685 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-13 05:30:33,530 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-13 05:30:33,835 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 58