/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/jain_5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 05:28:25,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 05:28:25,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 05:28:25,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 05:28:25,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 05:28:25,388 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 05:28:25,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 05:28:25,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 05:28:25,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 05:28:25,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 05:28:25,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 05:28:25,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 05:28:25,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 05:28:25,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 05:28:25,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 05:28:25,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 05:28:25,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 05:28:25,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 05:28:25,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 05:28:25,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 05:28:25,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 05:28:25,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 05:28:25,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 05:28:25,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 05:28:25,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 05:28:25,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 05:28:25,461 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 05:28:25,462 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 05:28:25,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 05:28:25,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 05:28:25,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 05:28:25,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 05:28:25,470 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 05:28:25,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 05:28:25,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 05:28:25,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 05:28:25,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 05:28:25,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 05:28:25,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 05:28:25,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 05:28:25,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 05:28:25,484 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 05:28:25,529 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 05:28:25,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 05:28:25,533 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 05:28:25,534 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 05:28:25,534 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 05:28:25,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 05:28:25,535 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 05:28:25,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 05:28:25,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 05:28:25,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 05:28:25,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 05:28:25,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 05:28:25,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 05:28:25,538 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 05:28:25,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 05:28:25,538 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 05:28:25,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 05:28:25,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 05:28:25,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 05:28:25,539 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 05:28:25,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 05:28:25,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 05:28:25,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 05:28:25,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 05:28:25,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 05:28:25,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 05:28:25,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 05:28:25,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 05:28:25,542 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 05:28:25,542 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 05:28:25,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 05:28:25,928 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 05:28:25,936 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 05:28:25,938 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 05:28:25,939 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 05:28:25,940 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/jain_5-2.c [2020-10-13 05:28:26,029 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9991f2899/ae7c58e5bbf440b7b129c63ff3958e7f/FLAGe0adc48af [2020-10-13 05:28:26,582 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 05:28:26,583 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/jain_5-2.c [2020-10-13 05:28:26,590 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9991f2899/ae7c58e5bbf440b7b129c63ff3958e7f/FLAGe0adc48af [2020-10-13 05:28:26,903 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9991f2899/ae7c58e5bbf440b7b129c63ff3958e7f [2020-10-13 05:28:26,917 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 05:28:26,920 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 05:28:26,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 05:28:26,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 05:28:26,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 05:28:26,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:28:26" (1/1) ... [2020-10-13 05:28:26,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@336c4a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:26, skipping insertion in model container [2020-10-13 05:28:26,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:28:26" (1/1) ... [2020-10-13 05:28:26,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 05:28:26,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 05:28:27,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:28:27,189 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 05:28:27,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:28:27,218 INFO L208 MainTranslator]: Completed translation [2020-10-13 05:28:27,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:27 WrapperNode [2020-10-13 05:28:27,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 05:28:27,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 05:28:27,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 05:28:27,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 05:28:27,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:27" (1/1) ... [2020-10-13 05:28:27,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:27" (1/1) ... [2020-10-13 05:28:27,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:27" (1/1) ... [2020-10-13 05:28:27,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:27" (1/1) ... [2020-10-13 05:28:27,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:27" (1/1) ... [2020-10-13 05:28:27,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:27" (1/1) ... [2020-10-13 05:28:27,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:27" (1/1) ... [2020-10-13 05:28:27,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 05:28:27,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 05:28:27,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 05:28:27,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 05:28:27,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 05:28:27,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 05:28:27,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 05:28:27,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 05:28:27,409 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 05:28:27,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 05:28:27,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 05:28:27,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 05:28:27,410 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 05:28:27,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 05:28:27,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 05:28:27,602 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 05:28:27,602 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 05:28:27,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:28:27 BoogieIcfgContainer [2020-10-13 05:28:27,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 05:28:27,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 05:28:27,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 05:28:27,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 05:28:27,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:28:26" (1/3) ... [2020-10-13 05:28:27,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60324754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:28:27, skipping insertion in model container [2020-10-13 05:28:27,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:27" (2/3) ... [2020-10-13 05:28:27,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60324754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:28:27, skipping insertion in model container [2020-10-13 05:28:27,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:28:27" (3/3) ... [2020-10-13 05:28:27,619 INFO L109 eAbstractionObserver]: Analyzing ICFG jain_5-2.c [2020-10-13 05:28:27,632 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 05:28:27,642 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 05:28:27,660 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 05:28:27,689 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 05:28:27,690 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 05:28:27,690 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 05:28:27,690 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 05:28:27,690 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 05:28:27,691 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 05:28:27,691 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 05:28:27,691 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 05:28:27,710 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-10-13 05:28:27,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-13 05:28:27,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:27,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:27,718 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:27,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:27,725 INFO L82 PathProgramCache]: Analyzing trace with hash -13144129, now seen corresponding path program 1 times [2020-10-13 05:28:27,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:27,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997245988] [2020-10-13 05:28:27,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:27,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:28,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:28,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 05:28:28,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:28,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-13 05:28:28,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:28,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:28:28,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 05:28:28,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:28:28,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 05:28:28,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:28,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:28,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:28,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:28,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:28,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:28:28,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:28,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:28,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:28,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:28,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:28,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:28:28,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997245988] [2020-10-13 05:28:28,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:28,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 05:28:28,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440905751] [2020-10-13 05:28:28,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 05:28:28,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:28,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 05:28:28,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:28:28,314 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 6 states. [2020-10-13 05:28:28,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:28,567 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-10-13 05:28:28,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 05:28:28,569 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-13 05:28:28,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:28,581 INFO L225 Difference]: With dead ends: 33 [2020-10-13 05:28:28,582 INFO L226 Difference]: Without dead ends: 20 [2020-10-13 05:28:28,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 05:28:28,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-13 05:28:28,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-10-13 05:28:28,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-13 05:28:28,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-10-13 05:28:28,639 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2020-10-13 05:28:28,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:28,639 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-10-13 05:28:28,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 05:28:28,640 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-10-13 05:28:28,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-13 05:28:28,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:28,641 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:28,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 05:28:28,642 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:28,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:28,642 INFO L82 PathProgramCache]: Analyzing trace with hash 327764987, now seen corresponding path program 1 times [2020-10-13 05:28:28,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:28,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603807258] [2020-10-13 05:28:28,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:28,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:28,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:28,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 05:28:28,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:28,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-13 05:28:28,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:28,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 05:28:28,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 05:28:28,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 05:28:28,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:29,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:29,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:29,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:29,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:29,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:29,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:28:29,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:29,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:29,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:29,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:29,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:29,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 05:28:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:29,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:29,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:29,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:29,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:29,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 05:28:29,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:29,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:29,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:29,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:29,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:29,120 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:28:29,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603807258] [2020-10-13 05:28:29,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:28:29,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 05:28:29,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912452628] [2020-10-13 05:28:29,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 05:28:29,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:29,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 05:28:29,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 05:28:29,127 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 7 states. [2020-10-13 05:28:29,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:29,273 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-10-13 05:28:29,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 05:28:29,275 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-10-13 05:28:29,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:29,276 INFO L225 Difference]: With dead ends: 28 [2020-10-13 05:28:29,277 INFO L226 Difference]: Without dead ends: 26 [2020-10-13 05:28:29,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 05:28:29,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-13 05:28:29,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-10-13 05:28:29,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-13 05:28:29,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-10-13 05:28:29,291 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 16 [2020-10-13 05:28:29,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:29,291 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-10-13 05:28:29,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 05:28:29,292 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-10-13 05:28:29,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-13 05:28:29,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:29,293 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:29,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 05:28:29,294 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:29,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:29,294 INFO L82 PathProgramCache]: Analyzing trace with hash 670829367, now seen corresponding path program 2 times [2020-10-13 05:28:29,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:29,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138324317] [2020-10-13 05:28:29,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:29,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:29,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:29,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 05:28:29,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:29,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-13 05:28:29,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:29,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 05:28:29,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 05:28:29,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 05:28:29,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:29,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:29,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:29,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:29,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:29,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:29,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:29,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:29,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:29,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:29,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:29,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:29,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 05:28:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:29,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:29,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:29,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:29,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:29,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 05:28:29,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:29,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:29,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:29,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:29,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:29,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:28:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:29,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:29,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:29,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:29,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:29,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 05:28:29,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:29,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:29,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:29,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:29,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:29,679 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 05:28:29,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138324317] [2020-10-13 05:28:29,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:28:29,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 05:28:29,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759342700] [2020-10-13 05:28:29,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 05:28:29,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:29,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 05:28:29,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 05:28:29,683 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 8 states. [2020-10-13 05:28:29,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:29,859 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-10-13 05:28:29,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 05:28:29,860 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-10-13 05:28:29,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:29,861 INFO L225 Difference]: With dead ends: 34 [2020-10-13 05:28:29,862 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 05:28:29,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-13 05:28:29,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 05:28:29,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-13 05:28:29,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 05:28:29,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-10-13 05:28:29,872 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 22 [2020-10-13 05:28:29,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:29,873 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-10-13 05:28:29,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 05:28:29,873 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-10-13 05:28:29,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-13 05:28:29,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:29,875 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:29,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 05:28:29,875 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:29,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:29,876 INFO L82 PathProgramCache]: Analyzing trace with hash -887526029, now seen corresponding path program 3 times [2020-10-13 05:28:29,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:29,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002660493] [2020-10-13 05:28:29,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:29,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:30,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 05:28:30,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:30,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-13 05:28:30,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:30,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 05:28:30,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 05:28:30,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 05:28:30,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:30,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:30,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:30,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:30,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:30,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:30,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:30,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:30,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:30,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:30,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:30,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 05:28:30,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:30,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:30,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:30,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:30,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 05:28:30,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:30,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:30,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:30,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:30,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:30,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:28:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:30,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:30,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:30,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:30,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 05:28:30,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:30,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:30,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:30,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:30,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:30,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 05:28:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:30,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:30,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:30,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:30,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 05:28:30,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:30,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:30,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:30,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:30,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:30,486 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 05:28:30,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002660493] [2020-10-13 05:28:30,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:28:30,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 05:28:30,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563794041] [2020-10-13 05:28:30,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 05:28:30,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:30,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 05:28:30,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 05:28:30,495 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 9 states. [2020-10-13 05:28:30,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:30,675 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-10-13 05:28:30,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 05:28:30,677 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-10-13 05:28:30,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:30,679 INFO L225 Difference]: With dead ends: 40 [2020-10-13 05:28:30,679 INFO L226 Difference]: Without dead ends: 38 [2020-10-13 05:28:30,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-13 05:28:30,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-13 05:28:30,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-13 05:28:30,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-13 05:28:30,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-10-13 05:28:30,711 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 28 [2020-10-13 05:28:30,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:30,713 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-10-13 05:28:30,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 05:28:30,713 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-10-13 05:28:30,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-13 05:28:30,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:30,715 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:30,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 05:28:30,716 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:30,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:30,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1830498991, now seen corresponding path program 4 times [2020-10-13 05:28:30,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:30,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7446754] [2020-10-13 05:28:30,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:30,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:30,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:31,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:31,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 05:28:31,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:31,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-13 05:28:31,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:31,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 05:28:31,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 05:28:31,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 05:28:31,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:31,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:31,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:31,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:31,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:31,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:31,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:31,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:31,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:31,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:31,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:31,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:31,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 05:28:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:31,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:31,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:31,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:31,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:31,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 05:28:31,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:31,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:31,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:31,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:31,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:31,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:28:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:31,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:31,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:31,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:31,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:31,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 05:28:31,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:31,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:31,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:31,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:31,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:31,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 05:28:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:31,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:31,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:31,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:31,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:31,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 05:28:31,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:31,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:31,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:31,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:31,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:31,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 05:28:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:31,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:31,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:31,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:31,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:31,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 05:28:31,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:31,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:31,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:31,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:31,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:31,344 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 05:28:31,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7446754] [2020-10-13 05:28:31,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:28:31,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 05:28:31,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382129153] [2020-10-13 05:28:31,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 05:28:31,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:31,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 05:28:31,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-13 05:28:31,348 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 10 states. [2020-10-13 05:28:31,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:31,534 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2020-10-13 05:28:31,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 05:28:31,535 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-10-13 05:28:31,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:31,536 INFO L225 Difference]: With dead ends: 46 [2020-10-13 05:28:31,536 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 05:28:31,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-13 05:28:31,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 05:28:31,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-13 05:28:31,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 05:28:31,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-10-13 05:28:31,549 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 34 [2020-10-13 05:28:31,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:31,549 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-10-13 05:28:31,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 05:28:31,549 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-10-13 05:28:31,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 05:28:31,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:31,551 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:31,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 05:28:31,552 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:31,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:31,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1542134507, now seen corresponding path program 5 times [2020-10-13 05:28:31,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:31,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000518962] [2020-10-13 05:28:31,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:31,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:32,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 05:28:32,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:32,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 629 [2020-10-13 05:28:32,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:32,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 05:28:32,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 05:28:32,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 05:28:32,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:32,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:32,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:32,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:32,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:32,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:32,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:32,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:32,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:32,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:32,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:32,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 05:28:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:32,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:32,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:32,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:32,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:28:32,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:32,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:32,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:32,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:32,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:32,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:28:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:32,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:32,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:32,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:32,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:28:32,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:32,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:32,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:32,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:32,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:32,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 05:28:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:32,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:32,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:32,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:32,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 05:28:32,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:32,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:32,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 05:28:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:32,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:32,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:32,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:32,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 05:28:32,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:32,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:32,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:32,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:32,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:32,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 05:28:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:32,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:32,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:32,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:32,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:28:32,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:32,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:32,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:32,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:32,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:32,446 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 05:28:32,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000518962] [2020-10-13 05:28:32,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:28:32,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 05:28:32,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794634993] [2020-10-13 05:28:32,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 05:28:32,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:32,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 05:28:32,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-13 05:28:32,449 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 11 states. [2020-10-13 05:28:32,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:32,627 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2020-10-13 05:28:32,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 05:28:32,628 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-13 05:28:32,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:32,630 INFO L225 Difference]: With dead ends: 52 [2020-10-13 05:28:32,630 INFO L226 Difference]: Without dead ends: 50 [2020-10-13 05:28:32,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-13 05:28:32,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-13 05:28:32,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-13 05:28:32,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-13 05:28:32,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2020-10-13 05:28:32,641 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 40 [2020-10-13 05:28:32,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:32,641 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2020-10-13 05:28:32,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 05:28:32,642 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2020-10-13 05:28:32,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 05:28:32,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:32,643 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:32,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 05:28:32,644 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:32,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:32,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1088231897, now seen corresponding path program 6 times [2020-10-13 05:28:32,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:32,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934057821] [2020-10-13 05:28:32,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:32,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:33,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 05:28:33,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:33,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 556 [2020-10-13 05:28:33,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:33,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 05:28:33,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 05:28:33,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 05:28:33,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:33,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:33,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:33,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:33,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:33,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:33,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:33,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:33,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:33,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:33,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:33,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 05:28:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:33,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:33,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:33,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:33,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 05:28:33,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:33,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:33,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:33,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:33,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:33,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:28:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:33,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:33,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:33,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:33,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 05:28:33,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:33,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:33,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:33,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:33,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:33,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 05:28:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:33,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:33,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:33,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:33,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 05:28:33,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:33,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:33,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:33,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:33,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:33,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 05:28:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:33,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:33,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:33,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:33,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 05:28:33,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:33,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:33,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:33,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:33,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:33,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 05:28:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:33,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:33,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:33,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:33,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:28:33,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:33,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:33,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:33,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:33,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:33,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 05:28:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:33,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:33,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:33,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:33,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:28:33,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:33,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:33,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:33,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:33,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:33,506 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 12 proven. 42 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-13 05:28:33,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934057821] [2020-10-13 05:28:33,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:28:33,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 05:28:33,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811840143] [2020-10-13 05:28:33,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 05:28:33,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:33,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 05:28:33,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-13 05:28:33,509 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 12 states. [2020-10-13 05:28:33,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:33,712 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2020-10-13 05:28:33,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 05:28:33,713 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-10-13 05:28:33,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:33,714 INFO L225 Difference]: With dead ends: 58 [2020-10-13 05:28:33,714 INFO L226 Difference]: Without dead ends: 56 [2020-10-13 05:28:33,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-13 05:28:33,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-13 05:28:33,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-13 05:28:33,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 05:28:33,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2020-10-13 05:28:33,725 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 46 [2020-10-13 05:28:33,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:33,726 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2020-10-13 05:28:33,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 05:28:33,726 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2020-10-13 05:28:33,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 05:28:33,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:33,727 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:33,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 05:28:33,728 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:33,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:33,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1811131293, now seen corresponding path program 7 times [2020-10-13 05:28:33,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:33,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603940402] [2020-10-13 05:28:33,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:33,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:34,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 05:28:34,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:34,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 990 [2020-10-13 05:28:34,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:34,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 05:28:34,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 05:28:34,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 05:28:34,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:34,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:34,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:34,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:34,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:34,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:34,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:34,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:34,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:34,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:34,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:34,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 05:28:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:34,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:34,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:34,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:34,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 05:28:34,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:34,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:34,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:34,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:34,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:34,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:28:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:34,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:34,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:34,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:34,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 05:28:34,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:34,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:34,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:34,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:34,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:34,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 05:28:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:34,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:34,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:34,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:34,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:28:34,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:34,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:34,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:34,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:34,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:34,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 05:28:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:34,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:34,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:34,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:34,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 05:28:34,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:34,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:34,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:34,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:34,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:34,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 05:28:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:35,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:35,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:35,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:35,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 05:28:35,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:35,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:35,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:35,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:35,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:35,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 05:28:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:35,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:35,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:35,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:35,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 05:28:35,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:35,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:35,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:35,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:35,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:35,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:28:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:35,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:35,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:35,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:35,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 05:28:35,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:35,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:35,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:35,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:35,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:35,055 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 14 proven. 56 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 05:28:35,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603940402] [2020-10-13 05:28:35,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:28:35,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 05:28:35,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744027172] [2020-10-13 05:28:35,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 05:28:35,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:35,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 05:28:35,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-13 05:28:35,059 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 13 states. [2020-10-13 05:28:35,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:35,355 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2020-10-13 05:28:35,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 05:28:35,356 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-10-13 05:28:35,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:35,358 INFO L225 Difference]: With dead ends: 64 [2020-10-13 05:28:35,358 INFO L226 Difference]: Without dead ends: 62 [2020-10-13 05:28:35,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-13 05:28:35,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-13 05:28:35,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-13 05:28:35,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-13 05:28:35,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2020-10-13 05:28:35,370 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 52 [2020-10-13 05:28:35,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:35,371 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2020-10-13 05:28:35,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 05:28:35,371 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2020-10-13 05:28:35,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 05:28:35,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:35,372 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:35,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 05:28:35,373 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:35,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:35,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1449056865, now seen corresponding path program 8 times [2020-10-13 05:28:35,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:35,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607883061] [2020-10-13 05:28:35,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:35,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:36,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 05:28:36,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:36,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 947 [2020-10-13 05:28:36,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:36,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 05:28:36,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 05:28:36,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 05:28:36,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:36,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:36,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:36,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:36,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:36,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:36,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:36,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:36,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:36,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:36,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:36,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 05:28:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:36,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:36,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:36,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:36,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 05:28:36,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:36,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:36,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:36,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:36,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:36,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:28:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:36,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:36,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:36,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:36,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 05:28:36,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:36,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:36,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:36,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:36,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:36,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 05:28:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:36,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:36,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:36,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:36,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 05:28:36,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:36,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:36,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:36,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:36,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:36,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 05:28:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:36,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:36,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:36,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:36,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 05:28:36,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:36,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:36,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:36,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:36,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:36,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 05:28:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:36,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:36,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:36,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:36,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 05:28:36,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:36,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:36,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:36,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:36,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:36,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 05:28:36,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:36,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:36,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:36,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:36,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 05:28:36,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:36,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:36,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:36,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:36,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:36,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:28:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:36,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:36,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:36,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:36,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 05:28:36,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:36,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:36,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:36,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:36,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:36,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 05:28:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:36,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:36,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:36,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:36,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 05:28:36,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:36,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:36,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:36,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:36,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:36,833 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 16 proven. 72 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-13 05:28:36,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607883061] [2020-10-13 05:28:36,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:28:36,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 05:28:36,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441762921] [2020-10-13 05:28:36,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 05:28:36,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:36,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 05:28:36,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-13 05:28:36,849 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 14 states. [2020-10-13 05:28:39,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:39,251 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2020-10-13 05:28:39,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 05:28:39,251 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2020-10-13 05:28:39,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:39,254 INFO L225 Difference]: With dead ends: 70 [2020-10-13 05:28:39,254 INFO L226 Difference]: Without dead ends: 68 [2020-10-13 05:28:39,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-13 05:28:39,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-13 05:28:39,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-13 05:28:39,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-13 05:28:39,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2020-10-13 05:28:39,268 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 58 [2020-10-13 05:28:39,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:39,273 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2020-10-13 05:28:39,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 05:28:39,273 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2020-10-13 05:28:39,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 05:28:39,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:39,275 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:39,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 05:28:39,275 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:39,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:39,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1668605477, now seen corresponding path program 9 times [2020-10-13 05:28:39,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:39,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419732450] [2020-10-13 05:28:39,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:39,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:44,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 05:28:44,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:44,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4923 [2020-10-13 05:28:44,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:44,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 05:28:44,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 05:28:44,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 05:28:44,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:44,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:44,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:44,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:44,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:44,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:44,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:44,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:44,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:44,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:44,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:44,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 05:28:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:44,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:44,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:44,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:44,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:28:44,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:44,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:44,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:44,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:44,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:44,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:28:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:44,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:44,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:44,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:44,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:28:44,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:44,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:44,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:44,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:44,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:44,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 05:28:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:44,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:44,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:44,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:44,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:28:44,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:44,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:44,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:44,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:44,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:44,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 05:28:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:44,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:44,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:44,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:44,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:28:44,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:44,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:44,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:44,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:44,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:44,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 05:28:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:44,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:44,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:44,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:44,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:28:44,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:44,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:44,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:44,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:44,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:44,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 05:28:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:44,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:44,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:44,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:44,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:28:44,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:44,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:44,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:44,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:44,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:44,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:28:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:44,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:44,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:44,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:44,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 05:28:44,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:44,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:44,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:44,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:44,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:44,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 05:28:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:44,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:44,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:44,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:44,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 05:28:44,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:44,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:44,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:44,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:44,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:44,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:28:44,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:44,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:44,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:28:44,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:44,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 05:28:44,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:44,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:44,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:44,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:44,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:44,658 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 18 proven. 90 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-13 05:28:44,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419732450] [2020-10-13 05:28:44,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:28:44,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 05:28:44,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490198836] [2020-10-13 05:28:44,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 05:28:44,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:44,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 05:28:44,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-13 05:28:44,663 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 15 states. [2020-10-13 05:28:47,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:47,125 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2020-10-13 05:28:47,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 05:28:47,126 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 64 [2020-10-13 05:28:47,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:47,128 INFO L225 Difference]: With dead ends: 76 [2020-10-13 05:28:47,128 INFO L226 Difference]: Without dead ends: 74 [2020-10-13 05:28:47,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-13 05:28:47,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-13 05:28:47,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-13 05:28:47,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 05:28:47,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2020-10-13 05:28:47,157 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 64 [2020-10-13 05:28:47,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:47,158 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2020-10-13 05:28:47,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 05:28:47,158 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2020-10-13 05:28:47,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 05:28:47,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:47,162 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:47,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 05:28:47,162 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:47,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:47,163 INFO L82 PathProgramCache]: Analyzing trace with hash -752619241, now seen corresponding path program 10 times [2020-10-13 05:28:47,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:47,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290429787] [2020-10-13 05:28:47,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:47,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:33,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:33,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 05:29:33,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:33,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46408 [2020-10-13 05:29:33,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:33,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 05:29:33,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 05:29:33,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 05:29:33,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:29:34,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:29:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:34,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:34,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:34,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:29:34,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:34,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:29:34,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:34,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:29:34,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:34,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:29:34,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:29:34,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 05:29:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:34,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:34,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:34,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:34,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:34,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 05:29:34,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:34,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:34,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:34,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:34,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:29:34,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:29:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:34,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:34,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:34,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:34,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:34,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 05:29:34,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:34,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:34,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:34,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:34,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:29:34,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 05:29:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:34,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:34,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:34,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:34,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:34,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 05:29:34,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:34,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:34,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:34,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:34,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:29:34,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 05:29:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:34,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:34,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:34,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:34,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:34,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 05:29:34,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:34,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:34,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:34,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:34,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:29:34,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 05:29:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:34,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:34,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:34,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:34,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:34,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 05:29:34,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:34,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:34,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:34,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:34,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:29:34,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 05:29:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:34,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:34,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:34,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:34,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:34,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 05:29:34,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:34,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:34,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:34,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:34,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:29:34,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:29:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:34,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:34,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:34,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:34,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:34,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 05:29:34,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:34,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:34,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:34,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:34,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:29:34,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 05:29:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:34,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:34,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:34,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:34,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:34,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 05:29:34,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:34,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:34,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:34,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:34,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:29:34,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:29:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:34,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:34,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:34,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:34,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:34,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 05:29:34,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:34,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:34,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:34,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:34,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:29:34,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 05:29:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:34,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:34,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:34,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:29:34,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:34,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 05:29:34,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:34,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:29:34,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:34,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:29:34,337 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 20 proven. 110 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-13 05:29:34,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290429787] [2020-10-13 05:29:34,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:29:34,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 05:29:34,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145729643] [2020-10-13 05:29:34,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 05:29:34,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:29:34,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 05:29:34,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-13 05:29:34,346 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 16 states. [2020-10-13 05:29:39,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:29:39,132 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2020-10-13 05:29:39,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 05:29:39,133 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 70 [2020-10-13 05:29:39,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:29:39,136 INFO L225 Difference]: With dead ends: 82 [2020-10-13 05:29:39,136 INFO L226 Difference]: Without dead ends: 80 [2020-10-13 05:29:39,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-13 05:29:39,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-13 05:29:39,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-13 05:29:39,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 05:29:39,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2020-10-13 05:29:39,151 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 70 [2020-10-13 05:29:39,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:29:39,152 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2020-10-13 05:29:39,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 05:29:39,152 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2020-10-13 05:29:39,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 05:29:39,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:29:39,154 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:29:39,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 05:29:39,155 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:29:39,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:29:39,156 INFO L82 PathProgramCache]: Analyzing trace with hash 2037738323, now seen corresponding path program 11 times [2020-10-13 05:29:39,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:29:39,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37168963] [2020-10-13 05:29:39,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:29:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:39,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:46,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:46,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 05:30:46,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:46,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67497 [2020-10-13 05:30:46,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:46,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 05:30:46,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 05:30:46,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 05:30:46,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:46,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:30:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:47,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:47,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:47,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:30:47,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:47,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:47,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:47,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:47,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:47,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:47,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:47,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 05:30:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:47,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:47,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:47,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:47,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:47,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:30:47,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:47,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:47,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:47,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:47,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:47,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:30:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:47,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:47,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:47,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:47,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:47,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:30:47,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:47,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:47,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:47,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:47,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:47,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 05:30:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:47,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:47,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:47,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:47,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:47,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:30:47,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:47,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:47,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:47,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:47,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:47,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 05:30:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:47,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:47,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:47,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:47,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:47,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:30:47,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:47,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:47,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:47,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:47,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:47,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 05:30:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:47,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:47,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:47,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:47,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:47,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:30:47,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:47,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:47,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:47,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:47,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:47,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 05:30:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:47,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:47,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:47,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:47,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:47,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:30:47,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:47,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:47,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:47,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:47,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:47,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:30:47,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:47,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:47,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:47,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:47,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:47,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:30:47,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:47,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:47,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:47,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:47,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:47,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 05:30:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:47,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:47,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:47,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:47,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:47,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:30:47,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:47,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:47,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:47,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:47,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:47,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:30:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:47,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:47,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:47,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:47,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:47,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:30:47,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:47,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:47,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:47,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:47,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:47,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 05:30:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:47,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:47,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:47,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:47,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:47,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:30:47,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:47,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:47,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:47,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:47,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:47,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 05:30:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:47,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:47,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:47,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:47,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:47,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:30:47,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:47,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:47,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:47,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:47,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:47,116 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 22 proven. 132 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-13 05:30:47,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37168963] [2020-10-13 05:30:47,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:30:47,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 05:30:47,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752644715] [2020-10-13 05:30:47,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 05:30:47,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:30:47,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 05:30:47,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-13 05:30:47,121 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 17 states. [2020-10-13 05:30:49,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:30:49,644 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2020-10-13 05:30:49,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 05:30:49,645 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 76 [2020-10-13 05:30:49,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:30:49,646 INFO L225 Difference]: With dead ends: 88 [2020-10-13 05:30:49,646 INFO L226 Difference]: Without dead ends: 86 [2020-10-13 05:30:49,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-13 05:30:49,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-13 05:30:49,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-13 05:30:49,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-13 05:30:49,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2020-10-13 05:30:49,658 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 76 [2020-10-13 05:30:49,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:30:49,659 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2020-10-13 05:30:49,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 05:30:49,659 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2020-10-13 05:30:49,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 05:30:49,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:49,660 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:30:49,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 05:30:49,661 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:49,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:49,661 INFO L82 PathProgramCache]: Analyzing trace with hash 2100906127, now seen corresponding path program 12 times [2020-10-13 05:30:49,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:49,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964988358] [2020-10-13 05:30:49,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:49,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:54,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:54,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 05:30:54,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:54,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5299 [2020-10-13 05:30:54,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:54,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 05:30:54,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 05:30:54,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 05:30:54,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:55,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:30:55,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:55,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:55,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:55,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:30:55,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:55,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:30:55,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:55,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:55,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:55,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:55,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:55,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 05:30:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:55,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:55,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:55,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:55,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:55,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:30:55,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:55,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:55,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:55,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:55,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:55,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:30:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:55,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:55,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:55,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:55,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:55,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:30:55,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:55,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:55,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:55,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:55,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:55,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 05:30:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:55,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:55,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:55,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:55,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:55,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:30:55,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:55,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:55,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:55,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:55,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:55,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 05:30:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:55,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:55,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:55,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:55,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:55,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:30:55,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:55,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:55,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:55,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:55,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:55,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 05:30:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:55,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:55,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:55,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:55,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:55,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:30:55,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:55,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:55,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:55,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:55,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:55,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 05:30:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:55,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:55,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:55,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:55,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:55,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:30:55,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:55,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:55,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:55,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:55,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:55,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:30:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:55,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:55,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:55,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:55,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:55,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:30:55,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:55,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:55,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:55,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:55,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:55,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 05:30:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:55,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:55,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:55,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:55,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:55,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:30:55,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:55,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:55,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:55,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:55,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:55,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:30:55,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:55,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:55,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:55,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:55,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:55,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:30:55,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:55,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:55,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:55,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:55,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:55,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 05:30:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:55,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:55,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:55,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:55,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:55,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:30:55,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:55,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:55,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:55,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:55,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:55,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 05:30:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:55,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:55,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:55,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:55,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:55,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:30:55,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:55,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:55,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:55,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:55,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:55,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 05:30:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:55,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:55,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:55,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:30:55,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:55,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:30:55,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:55,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:30:55,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:55,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:30:55,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:55,442 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 24 proven. 156 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-13 05:30:55,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964988358] [2020-10-13 05:30:55,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:30:55,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 05:30:55,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611706244] [2020-10-13 05:30:55,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 05:30:55,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:30:55,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 05:30:55,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-13 05:30:55,445 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 18 states. [2020-10-13 05:31:00,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:00,028 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2020-10-13 05:31:00,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 05:31:00,028 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 82 [2020-10-13 05:31:00,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:00,030 INFO L225 Difference]: With dead ends: 94 [2020-10-13 05:31:00,030 INFO L226 Difference]: Without dead ends: 92 [2020-10-13 05:31:00,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-13 05:31:00,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-13 05:31:00,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-13 05:31:00,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 05:31:00,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2020-10-13 05:31:00,046 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 82 [2020-10-13 05:31:00,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:00,047 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2020-10-13 05:31:00,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 05:31:00,047 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2020-10-13 05:31:00,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 05:31:00,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:00,048 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:31:00,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 05:31:00,048 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:00,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:00,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1982248757, now seen corresponding path program 13 times [2020-10-13 05:31:00,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:00,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417517908] [2020-10-13 05:31:00,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:00,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:08,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:08,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 05:31:08,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:08,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8391 [2020-10-13 05:31:08,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:08,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 05:31:08,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 05:31:08,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 05:31:08,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:08,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:08,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:08,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:08,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:08,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:08,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:08,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:08,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:08,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:08,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:08,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:08,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 05:31:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:08,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:08,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:08,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:31:08,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:08,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:08,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:08,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:31:08,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:08,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:31:08,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:08,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:08,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:08,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:08,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:31:08,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:08,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:08,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:08,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:31:08,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:08,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:31:08,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:08,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 05:31:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:08,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:08,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:08,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:31:08,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:08,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:08,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:08,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:31:08,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:08,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:31:08,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:08,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 05:31:08,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:08,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:08,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:08,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:31:08,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:08,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:08,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:08,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:31:08,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:08,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:31:08,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:08,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 05:31:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:08,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:08,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:08,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:31:08,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:08,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:08,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:08,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:31:08,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:08,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:31:08,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:08,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 05:31:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:08,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:08,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:08,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:31:08,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:08,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:08,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:08,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:31:08,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:08,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:31:08,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:08,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:31:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:08,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:08,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:08,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:31:08,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:08,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:08,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:08,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:31:08,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:08,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:31:08,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:08,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 05:31:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:08,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:08,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:08,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:31:08,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:08,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:08,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:08,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:31:08,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:08,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:31:08,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:08,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:31:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:08,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:08,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:08,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:31:08,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:08,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:08,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:08,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:31:08,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:08,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:31:08,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:08,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 05:31:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:08,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:08,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:08,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:31:08,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:08,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:08,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:08,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:31:08,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:08,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:31:08,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:08,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 05:31:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:08,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:08,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:08,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:31:08,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:08,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:08,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:08,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:31:08,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:08,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:31:08,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:08,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 05:31:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:08,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:08,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:08,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:31:08,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:08,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:08,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:08,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:31:08,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:08,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:31:08,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:08,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 05:31:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:08,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:08,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:08,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:31:08,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:08,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:08,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:08,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:31:08,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:08,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:31:08,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:08,957 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 26 proven. 182 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-13 05:31:08,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417517908] [2020-10-13 05:31:08,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:08,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 05:31:08,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402505439] [2020-10-13 05:31:08,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 05:31:08,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:08,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 05:31:08,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-13 05:31:08,960 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 19 states. [2020-10-13 05:31:11,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:11,531 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2020-10-13 05:31:11,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 05:31:11,532 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 88 [2020-10-13 05:31:11,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:11,533 INFO L225 Difference]: With dead ends: 100 [2020-10-13 05:31:11,533 INFO L226 Difference]: Without dead ends: 98 [2020-10-13 05:31:11,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-13 05:31:11,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-13 05:31:11,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-13 05:31:11,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-13 05:31:11,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2020-10-13 05:31:11,547 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 88 [2020-10-13 05:31:11,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:11,547 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2020-10-13 05:31:11,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 05:31:11,547 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2020-10-13 05:31:11,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 05:31:11,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:11,549 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:31:11,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 05:31:11,549 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:11,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:11,549 INFO L82 PathProgramCache]: Analyzing trace with hash 74394631, now seen corresponding path program 14 times [2020-10-13 05:31:11,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:11,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708414471] [2020-10-13 05:31:11,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:11,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking...