/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Fibonacci03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:00:31,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:00:31,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:00:31,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:00:31,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:00:31,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:00:31,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:00:31,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:00:31,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:00:31,454 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:00:31,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:00:31,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:00:31,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:00:31,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:00:31,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:00:31,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:00:31,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:00:31,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:00:31,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:00:31,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:00:31,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:00:31,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:00:31,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:00:31,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:00:31,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:00:31,475 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:00:31,475 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:00:31,476 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:00:31,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:00:31,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:00:31,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:00:31,481 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:00:31,482 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:00:31,483 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:00:31,484 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:00:31,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:00:31,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:00:31,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:00:31,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:00:31,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:00:31,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:00:31,492 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 02:00:31,552 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:00:31,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:00:31,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:00:31,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:00:31,556 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:00:31,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:00:31,557 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:00:31,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:00:31,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:00:31,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:00:31,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:00:31,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:00:31,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:00:31,560 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:00:31,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:00:31,560 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:00:31,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:00:31,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:00:31,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:00:31,562 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:00:31,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:00:31,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:00:31,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:00:31,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:00:31,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:00:31,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:00:31,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:00:31,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:00:31,565 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:00:31,565 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-09-25 02:00:32,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:00:32,091 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:00:32,096 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:00:32,098 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:00:32,100 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:00:32,101 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci03.c [2020-09-25 02:00:32,192 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ee4a0d03/be2d626742114b7c950ea69254b827b2/FLAG4a2de0950 [2020-09-25 02:00:32,802 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:00:32,803 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Fibonacci03.c [2020-09-25 02:00:32,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ee4a0d03/be2d626742114b7c950ea69254b827b2/FLAG4a2de0950 [2020-09-25 02:00:33,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ee4a0d03/be2d626742114b7c950ea69254b827b2 [2020-09-25 02:00:33,146 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:00:33,152 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:00:33,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:00:33,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:00:33,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:00:33,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:00:33" (1/1) ... [2020-09-25 02:00:33,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62502cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:33, skipping insertion in model container [2020-09-25 02:00:33,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:00:33" (1/1) ... [2020-09-25 02:00:33,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:00:33,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:00:33,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:00:33,435 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:00:33,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:00:33,467 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:00:33,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:33 WrapperNode [2020-09-25 02:00:33,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:00:33,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:00:33,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:00:33,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:00:33,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:33" (1/1) ... [2020-09-25 02:00:33,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:33" (1/1) ... [2020-09-25 02:00:33,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:33" (1/1) ... [2020-09-25 02:00:33,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:33" (1/1) ... [2020-09-25 02:00:33,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:33" (1/1) ... [2020-09-25 02:00:33,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:33" (1/1) ... [2020-09-25 02:00:33,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:33" (1/1) ... [2020-09-25 02:00:33,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:00:33,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:00:33,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:00:33,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:00:33,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:00:33,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:00:33,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:00:33,670 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-09-25 02:00:33,670 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:00:33,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:00:33,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:00:33,671 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-09-25 02:00:33,671 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:00:33,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:00:33,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:00:33,904 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:00:33,905 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 02:00:33,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:00:33 BoogieIcfgContainer [2020-09-25 02:00:33,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:00:33,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:00:33,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:00:33,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:00:33,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:00:33" (1/3) ... [2020-09-25 02:00:33,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60dd2e36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:00:33, skipping insertion in model container [2020-09-25 02:00:33,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:33" (2/3) ... [2020-09-25 02:00:33,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60dd2e36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:00:33, skipping insertion in model container [2020-09-25 02:00:33,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:00:33" (3/3) ... [2020-09-25 02:00:33,923 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci03.c [2020-09-25 02:00:33,943 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:00:33,954 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:00:33,983 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:00:34,021 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:00:34,022 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:00:34,022 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:00:34,022 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:00:34,022 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:00:34,022 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:00:34,023 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:00:34,023 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:00:34,049 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-09-25 02:00:34,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 02:00:34,059 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:34,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:34,060 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:34,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:34,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1379859160, now seen corresponding path program 1 times [2020-09-25 02:00:34,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:34,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446055481] [2020-09-25 02:00:34,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:34,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:34,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:34,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 02:00:34,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:34,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 02:00:34,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:34,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:34,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 02:00:34,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 02:00:34,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 02:00:34,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:34,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:34,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:34,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:34,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:34,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:00:34,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:34,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:34,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:34,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:34,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:34,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:00:34,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:34,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:34,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:34,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:00:34,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:34,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 02:00:34,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:34,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:34,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:34,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:00:34,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:34,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:00:34,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446055481] [2020-09-25 02:00:34,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:00:34,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:00:34,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072143719] [2020-09-25 02:00:34,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:00:34,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:34,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:00:34,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:00:34,541 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 5 states. [2020-09-25 02:00:34,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:34,705 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-09-25 02:00:34,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:00:34,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-25 02:00:34,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:34,722 INFO L225 Difference]: With dead ends: 50 [2020-09-25 02:00:34,722 INFO L226 Difference]: Without dead ends: 31 [2020-09-25 02:00:34,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:00:34,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-25 02:00:34,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-25 02:00:34,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 02:00:34,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-09-25 02:00:34,785 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 19 [2020-09-25 02:00:34,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:34,786 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-09-25 02:00:34,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:00:34,786 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-09-25 02:00:34,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 02:00:34,789 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:34,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:34,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:00:34,790 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:34,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:34,791 INFO L82 PathProgramCache]: Analyzing trace with hash -2056866127, now seen corresponding path program 1 times [2020-09-25 02:00:34,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:34,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779114925] [2020-09-25 02:00:34,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:34,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:34,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:34,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 02:00:34,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:34,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 02:00:34,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:34,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:34,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 02:00:34,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 02:00:34,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:34,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:34,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:34,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:34,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:34,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:34,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:00:34,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:34,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:34,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:34,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:34,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:34,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:00:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:34,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:35,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:35,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:00:35,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:35,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 02:00:35,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:35,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:35,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:35,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:00:35,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:35,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:00:35,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779114925] [2020-09-25 02:00:35,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:00:35,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:00:35,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494618057] [2020-09-25 02:00:35,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:00:35,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:35,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:00:35,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:00:35,056 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 5 states. [2020-09-25 02:00:35,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:35,132 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-09-25 02:00:35,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:00:35,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-09-25 02:00:35,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:35,134 INFO L225 Difference]: With dead ends: 39 [2020-09-25 02:00:35,135 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 02:00:35,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:00:35,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 02:00:35,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-09-25 02:00:35,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 02:00:35,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-09-25 02:00:35,145 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 20 [2020-09-25 02:00:35,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:35,146 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-09-25 02:00:35,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:00:35,146 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-09-25 02:00:35,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 02:00:35,148 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:35,149 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:35,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:00:35,149 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:35,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:35,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1274124978, now seen corresponding path program 1 times [2020-09-25 02:00:35,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:35,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167008369] [2020-09-25 02:00:35,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:35,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:35,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:35,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:35,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:35,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 02:00:35,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:00:35,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-09-25 02:00:35,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:35,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:00:35,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 02:00:35,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:00:35,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:35,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:35,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:35,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:35,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:35,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:35,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:00:35,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:35,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:35,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:35,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:35,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:35,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:00:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:35,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:35,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:35,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 02:00:35,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:35,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 02:00:35,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:35,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:00:35,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 02:00:35,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:00:35,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:35,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:00:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:35,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:35,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:35,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:00:35,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:35,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:00:35,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:35,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:35,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:00:35,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:00:35,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:35,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 02:00:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:35,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:35,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:35,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:00:35,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:35,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:00:35,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:35,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:35,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:00:35,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:35,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:35,912 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 02:00:35,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167008369] [2020-09-25 02:00:35,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:00:35,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 02:00:35,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473980727] [2020-09-25 02:00:35,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:00:35,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:35,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:00:35,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:00:35,915 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-09-25 02:00:36,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:36,009 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2020-09-25 02:00:36,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:00:36,010 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-09-25 02:00:36,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:36,012 INFO L225 Difference]: With dead ends: 55 [2020-09-25 02:00:36,012 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 02:00:36,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:00:36,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 02:00:36,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-25 02:00:36,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-25 02:00:36,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-09-25 02:00:36,023 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 36 [2020-09-25 02:00:36,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:36,024 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-09-25 02:00:36,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:00:36,024 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-09-25 02:00:36,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 02:00:36,026 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:36,027 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:36,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:00:36,027 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:36,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:36,028 INFO L82 PathProgramCache]: Analyzing trace with hash -2043121517, now seen corresponding path program 1 times [2020-09-25 02:00:36,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:36,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584853176] [2020-09-25 02:00:36,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:36,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:36,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:36,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:36,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 02:00:36,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:00:36,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 432 [2020-09-25 02:00:36,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:36,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:00:36,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 02:00:36,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 02:00:36,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:36,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:36,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:36,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:36,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:36,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:36,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:00:36,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:36,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:36,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:36,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:36,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:36,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:00:36,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:36,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:36,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:36,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:36,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:00:36,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:00:36,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-09-25 02:00:36,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:36,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:00:36,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:36,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:00:36,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:36,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:00:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:36,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:36,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:36,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:00:36,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:36,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:00:36,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:36,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:00:36,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:36,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:00:36,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:36,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:00:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:36,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:36,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:36,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:00:36,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:36,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:00:36,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:36,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:00:36,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:36,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:00:36,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:36,920 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 02:00:36,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584853176] [2020-09-25 02:00:36,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:00:36,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 02:00:36,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997460741] [2020-09-25 02:00:36,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:00:36,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:36,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:00:36,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:00:36,924 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 6 states. [2020-09-25 02:00:37,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:37,014 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-09-25 02:00:37,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:00:37,015 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-09-25 02:00:37,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:37,017 INFO L225 Difference]: With dead ends: 45 [2020-09-25 02:00:37,018 INFO L226 Difference]: Without dead ends: 39 [2020-09-25 02:00:37,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:00:37,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-25 02:00:37,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-09-25 02:00:37,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-25 02:00:37,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-09-25 02:00:37,028 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 37 [2020-09-25 02:00:37,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:37,028 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-09-25 02:00:37,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:00:37,029 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-09-25 02:00:37,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 02:00:37,030 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:37,031 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:37,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:00:37,031 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:37,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:37,032 INFO L82 PathProgramCache]: Analyzing trace with hash -693972664, now seen corresponding path program 1 times [2020-09-25 02:00:37,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:37,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628925570] [2020-09-25 02:00:37,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:37,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:37,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:37,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:37,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:37,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:37,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 02:00:37,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:00:37,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 604 [2020-09-25 02:00:37,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:37,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:00:37,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 02:00:37,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:00:37,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:37,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:37,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:37,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:37,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:37,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:37,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:00:37,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:37,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:37,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:37,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:37,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:37,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:00:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:37,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:37,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:37,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:37,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:00:37,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:00:37,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 02:00:37,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:37,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:00:37,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:00:37,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:00:37,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:37,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:00:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:37,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:37,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:37,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:00:37,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:37,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 02:00:37,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:37,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:37,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:37,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:00:37,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:37,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:00:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:37,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:37,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:37,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:37,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:00:37,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:00:37,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 02:00:37,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:37,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:37,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:00:37,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:00:37,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:37,881 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 02:00:37,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628925570] [2020-09-25 02:00:37,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:00:37,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 02:00:37,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961810027] [2020-09-25 02:00:37,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:00:37,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:37,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:00:37,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:00:37,884 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-09-25 02:00:38,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:38,012 INFO L93 Difference]: Finished difference Result 75 states and 96 transitions. [2020-09-25 02:00:38,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:00:38,013 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 02:00:38,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:38,015 INFO L225 Difference]: With dead ends: 75 [2020-09-25 02:00:38,015 INFO L226 Difference]: Without dead ends: 47 [2020-09-25 02:00:38,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:00:38,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-25 02:00:38,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2020-09-25 02:00:38,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-25 02:00:38,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-09-25 02:00:38,026 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 38 [2020-09-25 02:00:38,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:38,026 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-09-25 02:00:38,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:00:38,027 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-09-25 02:00:38,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 02:00:38,029 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:38,029 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:38,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:00:38,030 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:38,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:38,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1275966376, now seen corresponding path program 2 times [2020-09-25 02:00:38,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:38,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804267492] [2020-09-25 02:00:38,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:38,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:38,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:38,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:38,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:40,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:40,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 02:00:40,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:00:40,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2369 [2020-09-25 02:00:40,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:40,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:00:40,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 02:00:40,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 02:00:40,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:40,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:40,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:40,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:40,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:40,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:40,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:00:40,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:40,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:40,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:40,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:40,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:40,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:00:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:40,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:40,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:40,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:42,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:42,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:00:42,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:00:42,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2318 [2020-09-25 02:00:42,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:42,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:00:42,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:42,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 02:00:42,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:42,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:00:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:42,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:42,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:43,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:43,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:00:43,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:00:43,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-09-25 02:00:43,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:43,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:00:43,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:43,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:00:43,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:43,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:00:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:43,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:43,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:43,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:00:43,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:43,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:00:43,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:43,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:00:43,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:43,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:00:43,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:43,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:00:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:43,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:43,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:43,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:00:43,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:43,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:00:43,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:43,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:00:43,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:43,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:00:43,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:43,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:00:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:43,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:43,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:43,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:00:43,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:43,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:00:43,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:43,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:00:43,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:43,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:00:43,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:43,217 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 02:00:43,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804267492] [2020-09-25 02:00:43,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:00:43,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 02:00:43,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714987139] [2020-09-25 02:00:43,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:00:43,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:43,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:00:43,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:00:43,220 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 8 states. [2020-09-25 02:00:43,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:43,366 INFO L93 Difference]: Finished difference Result 95 states and 130 transitions. [2020-09-25 02:00:43,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 02:00:43,367 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2020-09-25 02:00:43,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:43,369 INFO L225 Difference]: With dead ends: 95 [2020-09-25 02:00:43,369 INFO L226 Difference]: Without dead ends: 59 [2020-09-25 02:00:43,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:00:43,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-25 02:00:43,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2020-09-25 02:00:43,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-25 02:00:43,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 72 transitions. [2020-09-25 02:00:43,382 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 72 transitions. Word has length 55 [2020-09-25 02:00:43,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:43,383 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 72 transitions. [2020-09-25 02:00:43,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:00:43,383 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 72 transitions. [2020-09-25 02:00:43,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 02:00:43,386 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:43,387 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:43,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:00:43,387 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:43,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:43,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1106616419, now seen corresponding path program 3 times [2020-09-25 02:00:43,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:43,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716763233] [2020-09-25 02:00:43,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:43,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:43,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:43,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:43,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:43,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:43,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:45,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:45,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:48,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 02:00:48,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 02:00:48,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 02:00:48,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:48,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:00:48,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 02:00:48,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 02:00:48,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:48,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:48,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:48,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:48,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:48,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:00:48,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:48,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:48,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:48,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:48,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:48,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:00:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:48,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:51,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:51,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 02:00:51,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:00:51,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3146 [2020-09-25 02:00:51,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:51,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:00:51,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:00:51,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 02:00:51,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:51,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:00:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:51,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:51,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:51,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:51,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:51,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:53,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:53,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:00:53,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:00:53,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1694 [2020-09-25 02:00:53,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:53,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:00:53,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:53,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 02:00:53,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:53,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:00:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:53,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:53,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:53,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:53,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:53,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:00:53,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:00:53,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-09-25 02:00:53,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:53,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:00:53,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:53,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:00:53,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:53,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:00:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:53,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:53,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:53,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:53,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:00:53,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:00:53,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 02:00:53,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:53,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:00:53,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:53,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:00:53,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:53,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:00:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:53,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:53,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:53,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:00:53,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:53,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:00:53,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:53,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:00:53,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:53,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:00:53,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:53,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:00:53,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:53,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:53,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:53,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:00:53,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:53,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:00:53,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:53,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:00:53,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:53,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:00:53,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:53,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 02:00:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:53,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:53,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:53,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:00:53,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:53,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 02:00:53,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:53,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:53,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:00:53,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:00:53,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:53,775 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 60 proven. 29 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-25 02:00:53,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716763233] [2020-09-25 02:00:53,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:00:53,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 02:00:53,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945052363] [2020-09-25 02:00:53,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:00:53,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:53,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:00:53,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:00:53,780 INFO L87 Difference]: Start difference. First operand 57 states and 72 transitions. Second operand 9 states. [2020-09-25 02:00:54,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:54,017 INFO L93 Difference]: Finished difference Result 122 states and 166 transitions. [2020-09-25 02:00:54,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 02:00:54,017 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2020-09-25 02:00:54,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:54,020 INFO L225 Difference]: With dead ends: 122 [2020-09-25 02:00:54,020 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 02:00:54,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:00:54,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 02:00:54,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2020-09-25 02:00:54,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 02:00:54,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2020-09-25 02:00:54,045 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 73 [2020-09-25 02:00:54,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:54,048 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2020-09-25 02:00:54,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:00:54,048 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2020-09-25 02:00:54,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 02:00:54,050 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:54,051 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:54,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:00:54,051 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:54,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:54,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1698410615, now seen corresponding path program 4 times [2020-09-25 02:00:54,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:54,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719257345] [2020-09-25 02:00:54,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:54,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:54,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:54,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:54,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:56,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:59,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:59,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 02:00:59,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:00:59,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 02:00:59,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:59,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:00:59,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 02:00:59,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 02:00:59,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:59,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:59,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:59,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:59,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:59,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:59,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:00:59,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:59,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:59,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:59,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:59,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:59,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:00:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:59,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:59,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:59,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:59,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:59,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:04,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:04,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 02:01:04,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:01:04,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 02:01:04,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:04,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:01:04,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:04,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 02:01:04,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:04,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:04,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:04,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:04,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:01:04,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:04,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 02:01:04,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:04,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:04,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:04,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:01:04,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:04,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:04,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:04,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:04,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:04,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:04,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:01:04,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:04,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:04,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:04,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:04,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:04,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:04,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:04,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:04,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:04,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:04,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:01:04,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:04,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:04,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:04,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:04,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:04,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:04,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:04,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:04,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:04,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:04,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:01:04,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:04,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:04,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:04,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:04,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:04,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:01:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:04,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:04,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:04,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:04,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:04,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:01:04,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:04,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:04,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:04,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:04,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:04,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 02:01:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:04,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:04,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:04,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:04,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:04,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:04,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 02:01:04,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:04,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:01:04,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:04,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:01:04,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:04,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:04,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:04,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:04,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:04,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:04,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:01:04,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:04,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:04,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:04,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:04,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:04,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:04,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:04,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:01:04,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:04,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:04,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:04,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:04,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:04,477 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 78 proven. 27 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-09-25 02:01:04,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719257345] [2020-09-25 02:01:04,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:04,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 02:01:04,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984585374] [2020-09-25 02:01:04,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:01:04,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:04,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:01:04,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:01:04,479 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand 8 states. [2020-09-25 02:01:04,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:04,630 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2020-09-25 02:01:04,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 02:01:04,631 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-09-25 02:01:04,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:04,632 INFO L225 Difference]: With dead ends: 76 [2020-09-25 02:01:04,632 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 02:01:04,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:01:04,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 02:01:04,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2020-09-25 02:01:04,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 02:01:04,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2020-09-25 02:01:04,649 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 90 [2020-09-25 02:01:04,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:04,650 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2020-09-25 02:01:04,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:01:04,650 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2020-09-25 02:01:04,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 02:01:04,652 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:04,657 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:04,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 02:01:04,657 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:04,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:04,658 INFO L82 PathProgramCache]: Analyzing trace with hash -692654002, now seen corresponding path program 5 times [2020-09-25 02:01:04,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:04,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429361006] [2020-09-25 02:01:04,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:04,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:04,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:04,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:04,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:07,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:07,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:07,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:07,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:07,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:07,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:07,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:07,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:07,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:08,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:08,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:09,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:09,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 02:01:09,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 02:01:09,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 02:01:09,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:09,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 02:01:09,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 02:01:09,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 02:01:09,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:09,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:09,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:09,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:09,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:09,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:09,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:01:09,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:09,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:09,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:09,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:09,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:09,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:01:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:09,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:09,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:09,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:09,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:09,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:12,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:12,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:14,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:14,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 02:01:14,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 02:01:14,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 02:01:14,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:14,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:01:14,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:01:14,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 02:01:14,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:14,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:14,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:14,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:14,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:14,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:14,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:15,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:19,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:19,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:01:19,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:01:19,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4575 [2020-09-25 02:01:19,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:19,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:01:19,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:19,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 02:01:19,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:19,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:19,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:19,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:19,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:19,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:19,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:19,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:01:19,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-09-25 02:01:19,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:19,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:01:19,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:19,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:01:19,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:19,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:19,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:19,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:19,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:19,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:19,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:19,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 02:01:19,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:19,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:19,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:19,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:01:19,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:19,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:19,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:19,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:19,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:19,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:19,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:01:19,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:19,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:19,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:19,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:19,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:19,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:01:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:19,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:19,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:19,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:19,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:19,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:01:19,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:19,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:19,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:19,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:19,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:20,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 02:01:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:20,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:20,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:20,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:20,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:20,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:21,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:21,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:01:21,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:01:21,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1516 [2020-09-25 02:01:21,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:21,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:01:21,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:21,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:01:21,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:21,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:21,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:21,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:21,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:21,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:21,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:21,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:01:21,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-09-25 02:01:21,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:21,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:21,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:21,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:01:21,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:21,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:21,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:21,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:21,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:21,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:21,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:01:21,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:21,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:21,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:21,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:21,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:21,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:21,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:21,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:21,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:21,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:21,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:21,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:01:21,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:21,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:21,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:21,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:21,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:21,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:01:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:21,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:21,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:21,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:21,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:21,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:01:21,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:21,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:21,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:21,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:21,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:21,898 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 94 proven. 144 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-09-25 02:01:21,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429361006] [2020-09-25 02:01:21,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:21,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 02:01:21,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959081382] [2020-09-25 02:01:21,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 02:01:21,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:21,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 02:01:21,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-09-25 02:01:21,901 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand 13 states. [2020-09-25 02:01:22,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:22,183 INFO L93 Difference]: Finished difference Result 133 states and 171 transitions. [2020-09-25 02:01:22,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 02:01:22,183 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 108 [2020-09-25 02:01:22,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:22,187 INFO L225 Difference]: With dead ends: 133 [2020-09-25 02:01:22,187 INFO L226 Difference]: Without dead ends: 75 [2020-09-25 02:01:22,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-09-25 02:01:22,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-25 02:01:22,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-09-25 02:01:22,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 02:01:22,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2020-09-25 02:01:22,197 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 108 [2020-09-25 02:01:22,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:22,198 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2020-09-25 02:01:22,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 02:01:22,198 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2020-09-25 02:01:22,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 02:01:22,199 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:22,200 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:22,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 02:01:22,200 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:22,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:22,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1805985707, now seen corresponding path program 6 times [2020-09-25 02:01:22,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:22,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999358321] [2020-09-25 02:01:22,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:22,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:22,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:22,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:23,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:23,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:23,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:27,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:27,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 02:01:27,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:01:27,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 02:01:27,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:27,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:01:27,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 02:01:27,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-09-25 02:01:27,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:27,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:27,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:27,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:27,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:27,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:27,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:01:27,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:27,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:27,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:27,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:27,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:27,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:01:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:27,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:27,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:27,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking...