/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_o200.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:32:21,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:32:21,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:32:21,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:32:21,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:32:21,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:32:21,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:32:21,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:32:21,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:32:21,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:32:21,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:32:21,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:32:21,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:32:21,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:32:21,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:32:21,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:32:21,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:32:21,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:32:21,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:32:21,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:32:21,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:32:21,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:32:21,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:32:21,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:32:21,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:32:21,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:32:21,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:32:21,516 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:32:21,517 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:32:21,518 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:32:21,518 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:32:21,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:32:21,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:32:21,520 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:32:21,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:32:21,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:32:21,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:32:21,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:32:21,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:32:21,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:32:21,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:32:21,526 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:32:21,581 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:32:21,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:32:21,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:32:21,584 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:32:21,584 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:32:21,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:32:21,585 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:32:21,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:32:21,586 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:32:21,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:32:21,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:32:21,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:32:21,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:32:21,588 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:32:21,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:32:21,588 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:32:21,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:32:21,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:32:21,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:32:21,589 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:32:21,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:32:21,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:32:21,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:32:21,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:32:21,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:32:21,590 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:32:21,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:32:21,591 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:32:21,591 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:32:21,591 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:32:22,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:32:22,109 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:32:22,114 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:32:22,116 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:32:22,116 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:32:22,118 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o200.c [2020-09-25 14:32:22,208 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28d321d3f/63ffa3480ddf4a2b93c82e21408ee9b1/FLAG73d79a179 [2020-09-25 14:32:22,732 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:32:22,733 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_o200.c [2020-09-25 14:32:22,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28d321d3f/63ffa3480ddf4a2b93c82e21408ee9b1/FLAG73d79a179 [2020-09-25 14:32:23,081 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28d321d3f/63ffa3480ddf4a2b93c82e21408ee9b1 [2020-09-25 14:32:23,095 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:32:23,101 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:32:23,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:32:23,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:32:23,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:32:23,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:32:23" (1/1) ... [2020-09-25 14:32:23,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e48a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:32:23, skipping insertion in model container [2020-09-25 14:32:23,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:32:23" (1/1) ... [2020-09-25 14:32:23,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:32:23,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:32:23,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:32:23,367 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:32:23,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:32:23,404 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:32:23,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:32:23 WrapperNode [2020-09-25 14:32:23,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:32:23,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:32:23,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:32:23,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:32:23,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:32:23" (1/1) ... [2020-09-25 14:32:23,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:32:23" (1/1) ... [2020-09-25 14:32:23,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:32:23" (1/1) ... [2020-09-25 14:32:23,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:32:23" (1/1) ... [2020-09-25 14:32:23,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:32:23" (1/1) ... [2020-09-25 14:32:23,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:32:23" (1/1) ... [2020-09-25 14:32:23,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:32:23" (1/1) ... [2020-09-25 14:32:23,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:32:23,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:32:23,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:32:23,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:32:23,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:32:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:32:23,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:32:23,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:32:23,616 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 14:32:23,616 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:32:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 14:32:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:32:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 14:32:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:32:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:32:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:32:23,800 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:32:23,801 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 14:32:23,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:32:23 BoogieIcfgContainer [2020-09-25 14:32:23,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:32:23,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:32:23,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:32:23,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:32:23,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:32:23" (1/3) ... [2020-09-25 14:32:23,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ade506e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:32:23, skipping insertion in model container [2020-09-25 14:32:23,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:32:23" (2/3) ... [2020-09-25 14:32:23,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ade506e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:32:23, skipping insertion in model container [2020-09-25 14:32:23,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:32:23" (3/3) ... [2020-09-25 14:32:23,825 INFO L109 eAbstractionObserver]: Analyzing ICFG id_o200.c [2020-09-25 14:32:23,855 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:32:23,875 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:32:23,931 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:32:23,970 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:32:23,971 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:32:23,971 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:32:23,971 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:32:23,971 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:32:23,972 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:32:23,972 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:32:23,972 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:32:23,997 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-25 14:32:24,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 14:32:24,005 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:32:24,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:32:24,007 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:32:24,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:32:24,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1651991454, now seen corresponding path program 1 times [2020-09-25 14:32:24,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:32:24,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934638090] [2020-09-25 14:32:24,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:32:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:24,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:24,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:24,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:32:24,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:24,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 14:32:24,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:24,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:24,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:32:24,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 14:32:24,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:32:24,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:32:24,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:32:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:24,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:24,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:24,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:32:24,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:24,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:32:24,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:24,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:24,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:32:24,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:24,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:32:24,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:24,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 14:32:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:24,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:24,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:24,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:32:24,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:24,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:32:24,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:24,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:24,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:32:24,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:24,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:32:24,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:24,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:32:24,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934638090] [2020-09-25 14:32:24,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:32:24,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:32:24,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972114309] [2020-09-25 14:32:24,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:32:24,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:32:24,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:32:24,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:32:24,452 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-09-25 14:32:24,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:32:24,542 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-25 14:32:24,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:32:24,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 14:32:24,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:32:24,559 INFO L225 Difference]: With dead ends: 37 [2020-09-25 14:32:24,559 INFO L226 Difference]: Without dead ends: 22 [2020-09-25 14:32:24,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:32:24,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-25 14:32:24,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-25 14:32:24,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-25 14:32:24,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-09-25 14:32:24,619 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16 [2020-09-25 14:32:24,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:32:24,620 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-09-25 14:32:24,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:32:24,620 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-09-25 14:32:24,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 14:32:24,623 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:32:24,623 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:32:24,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:32:24,623 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:32:24,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:32:24,624 INFO L82 PathProgramCache]: Analyzing trace with hash 189324707, now seen corresponding path program 1 times [2020-09-25 14:32:24,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:32:24,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236638978] [2020-09-25 14:32:24,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:32:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:24,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:24,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:24,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:32:24,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:24,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-09-25 14:32:24,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:24,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:24,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:32:24,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 14:32:24,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:32:24,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:32:24,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:32:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:24,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:24,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:24,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:32:24,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:24,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:32:24,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:24,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:24,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:32:24,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:24,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:32:24,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:24,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 14:32:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:24,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:25,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:25,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:32:25,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:25,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 14:32:25,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:25,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:25,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:32:25,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:25,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:32:25,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:25,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:25,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:25,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:25,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:32:25,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:25,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 14:32:25,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:25,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:32:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:32:25,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:25,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 14:32:25,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236638978] [2020-09-25 14:32:25,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:32:25,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:32:25,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729171156] [2020-09-25 14:32:25,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:32:25,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:32:25,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:32:25,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:32:25,196 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 7 states. [2020-09-25 14:32:25,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:32:25,267 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-09-25 14:32:25,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:32:25,268 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-25 14:32:25,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:32:25,269 INFO L225 Difference]: With dead ends: 31 [2020-09-25 14:32:25,269 INFO L226 Difference]: Without dead ends: 26 [2020-09-25 14:32:25,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:32:25,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-25 14:32:25,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-25 14:32:25,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-25 14:32:25,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-25 14:32:25,279 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 23 [2020-09-25 14:32:25,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:32:25,279 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-25 14:32:25,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:32:25,280 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-25 14:32:25,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 14:32:25,281 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:32:25,281 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:32:25,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:32:25,282 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:32:25,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:32:25,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1416732684, now seen corresponding path program 2 times [2020-09-25 14:32:25,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:32:25,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98642577] [2020-09-25 14:32:25,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:32:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:25,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:25,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:25,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 14:32:25,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:25,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-25 14:32:25,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:25,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:25,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:32:25,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 14:32:25,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:32:25,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:25,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:32:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:25,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:25,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:25,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:32:25,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:25,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:32:25,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:25,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:25,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:32:25,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:25,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:32:25,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:25,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 14:32:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:25,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:25,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:25,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 14:32:25,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:25,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 14:32:25,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:25,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:25,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:32:25,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:25,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 14:32:25,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:25,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:25,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:25,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:25,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:32:25,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:25,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 14:32:25,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:25,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:25,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:32:25,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:25,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:32:25,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:32:25,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:25,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:25,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:25,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:32:25,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:25,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 14:32:25,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:25,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:25,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:32:25,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:25,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:32:25,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:25,884 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 14:32:25,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98642577] [2020-09-25 14:32:25,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:32:25,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:32:25,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165648052] [2020-09-25 14:32:25,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:32:25,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:32:25,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:32:25,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:32:25,888 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2020-09-25 14:32:25,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:32:25,993 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-09-25 14:32:25,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:32:25,994 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-09-25 14:32:25,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:32:25,995 INFO L225 Difference]: With dead ends: 35 [2020-09-25 14:32:25,995 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 14:32:25,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:32:25,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 14:32:26,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 14:32:26,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 14:32:26,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-25 14:32:26,009 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 30 [2020-09-25 14:32:26,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:32:26,009 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-25 14:32:26,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:32:26,010 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-25 14:32:26,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 14:32:26,012 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:32:26,013 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:32:26,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:32:26,013 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:32:26,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:32:26,014 INFO L82 PathProgramCache]: Analyzing trace with hash -209476043, now seen corresponding path program 3 times [2020-09-25 14:32:26,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:32:26,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885302873] [2020-09-25 14:32:26,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:32:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:26,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:26,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:26,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 14:32:26,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:26,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-09-25 14:32:26,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:26,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:26,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:32:26,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 14:32:26,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 14:32:26,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:26,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:32:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:26,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:26,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:26,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:32:26,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:26,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:32:26,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:26,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:26,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:32:26,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:26,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:32:26,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:26,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 14:32:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:26,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:26,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:26,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 14:32:26,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:26,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-25 14:32:26,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:26,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:26,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:32:26,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:26,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 14:32:26,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:32:26,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:26,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:26,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:26,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:26,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 14:32:26,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:26,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 14:32:26,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:26,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:26,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:32:26,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:26,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 14:32:26,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:26,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:26,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:26,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:26,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:32:26,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:26,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 14:32:26,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:26,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:26,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:32:26,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:26,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:32:26,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:26,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:26,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:26,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:26,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:32:26,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:26,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:32:26,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:26,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:26,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:32:26,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:26,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:32:26,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:26,961 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 14:32:26,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885302873] [2020-09-25 14:32:26,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:32:26,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 14:32:26,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155264441] [2020-09-25 14:32:26,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 14:32:26,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:32:26,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 14:32:26,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:32:26,964 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states. [2020-09-25 14:32:27,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:32:27,119 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-25 14:32:27,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 14:32:27,120 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-09-25 14:32:27,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:32:27,122 INFO L225 Difference]: With dead ends: 39 [2020-09-25 14:32:27,122 INFO L226 Difference]: Without dead ends: 34 [2020-09-25 14:32:27,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:32:27,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-25 14:32:27,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-09-25 14:32:27,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 14:32:27,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-09-25 14:32:27,131 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 37 [2020-09-25 14:32:27,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:32:27,131 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-09-25 14:32:27,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 14:32:27,131 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-09-25 14:32:27,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 14:32:27,133 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:32:27,133 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:32:27,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:32:27,133 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:32:27,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:32:27,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1007399302, now seen corresponding path program 4 times [2020-09-25 14:32:27,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:32:27,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253957214] [2020-09-25 14:32:27,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:32:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:27,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:27,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:27,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 14:32:27,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:27,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-09-25 14:32:27,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:27,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:27,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 14:32:27,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 14:32:27,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 14:32:27,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:27,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:32:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:27,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:27,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:27,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:32:27,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:27,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:32:27,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:27,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:27,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:32:27,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:27,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:32:27,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:27,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 14:32:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:27,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:27,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:27,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 14:32:27,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:27,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-25 14:32:27,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:27,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:27,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:32:27,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:27,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 14:32:27,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:27,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:27,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:27,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:27,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 14:32:27,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:27,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-25 14:32:27,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:27,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:27,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:32:27,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:27,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 14:32:27,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:27,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:27,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:28,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:28,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 14:32:28,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:28,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 14:32:28,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:28,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:28,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:32:28,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:28,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 14:32:28,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:28,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:28,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:28,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:28,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:32:28,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:28,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 14:32:28,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:28,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:28,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:32:28,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:28,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:32:28,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:28,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:28,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:28,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:28,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:32:28,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:28,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:32:28,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:28,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:28,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:32:28,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:28,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:32:28,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:28,208 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 14:32:28,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253957214] [2020-09-25 14:32:28,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:32:28,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 14:32:28,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625502029] [2020-09-25 14:32:28,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 14:32:28,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:32:28,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 14:32:28,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:32:28,211 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 13 states. [2020-09-25 14:32:28,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:32:28,437 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-09-25 14:32:28,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 14:32:28,438 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-09-25 14:32:28,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:32:28,439 INFO L225 Difference]: With dead ends: 43 [2020-09-25 14:32:28,440 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 14:32:28,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-09-25 14:32:28,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 14:32:28,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-25 14:32:28,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 14:32:28,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-25 14:32:28,448 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 44 [2020-09-25 14:32:28,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:32:28,448 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-25 14:32:28,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 14:32:28,449 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-25 14:32:28,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 14:32:28,450 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:32:28,450 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:32:28,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:32:28,450 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:32:28,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:32:28,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1787659065, now seen corresponding path program 5 times [2020-09-25 14:32:28,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:32:28,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385268614] [2020-09-25 14:32:28,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:32:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:28,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:28,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:28,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 14:32:28,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:28,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-09-25 14:32:28,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:28,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:28,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 14:32:28,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 14:32:28,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 14:32:28,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:28,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:32:28,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:28,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:28,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:28,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:32:28,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:28,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:32:28,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:28,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:28,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:32:28,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:28,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:32:28,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:28,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 14:32:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:28,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:29,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:29,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 14:32:29,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:29,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-09-25 14:32:29,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:29,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:29,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:32:29,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:29,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 14:32:29,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:29,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:29,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:29,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:29,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 14:32:29,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:29,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-09-25 14:32:29,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:29,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:29,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:32:29,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:29,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 14:32:29,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:29,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:29,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:29,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:29,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 14:32:29,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:29,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-25 14:32:29,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:29,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:29,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:32:29,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:29,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 14:32:29,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:29,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:29,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:29,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:29,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:29,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 14:32:29,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:29,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 14:32:29,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:29,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:29,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:32:29,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:29,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 14:32:29,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:29,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:29,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:30,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:30,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:32:30,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:30,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 14:32:30,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:30,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:30,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:32:30,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:30,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:32:30,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:30,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:30,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:30,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:30,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:30,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:32:30,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:30,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:32:30,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:30,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:30,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:32:30,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:30,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:32:30,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:30,134 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 14:32:30,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385268614] [2020-09-25 14:32:30,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:32:30,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 14:32:30,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812251032] [2020-09-25 14:32:30,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 14:32:30,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:32:30,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 14:32:30,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:32:30,137 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 15 states. [2020-09-25 14:32:30,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:32:30,407 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-09-25 14:32:30,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 14:32:30,407 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-09-25 14:32:30,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:32:30,409 INFO L225 Difference]: With dead ends: 47 [2020-09-25 14:32:30,409 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 14:32:30,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-09-25 14:32:30,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 14:32:30,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 14:32:30,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 14:32:30,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-09-25 14:32:30,421 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 51 [2020-09-25 14:32:30,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:32:30,422 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-09-25 14:32:30,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 14:32:30,424 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-09-25 14:32:30,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 14:32:30,426 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:32:30,426 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:32:30,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:32:30,428 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:32:30,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:32:30,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1360883432, now seen corresponding path program 6 times [2020-09-25 14:32:30,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:32:30,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638263778] [2020-09-25 14:32:30,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:32:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:30,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:31,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:31,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 14:32:31,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:31,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 637 [2020-09-25 14:32:31,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:31,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:31,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 14:32:31,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 14:32:31,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:32:31,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:31,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:32:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:31,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:31,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:31,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:32:31,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:31,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:32:31,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:31,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:31,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:32:31,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:31,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:32:31,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:31,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 14:32:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:31,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:31,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:31,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 14:32:31,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:31,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-09-25 14:32:31,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:31,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:31,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:32:31,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:31,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 14:32:31,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:31,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:31,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:31,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:31,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 14:32:31,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:31,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-09-25 14:32:31,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:31,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:31,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:32:31,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:31,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 14:32:31,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:32,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:32,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:32,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:32,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 14:32:32,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:32,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-25 14:32:32,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:32,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:32,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:32:32,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:32,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 14:32:32,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:32,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:32,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:32,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:32,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 14:32:32,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:32,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 14:32:32,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:32,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:32,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:32:32,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:32,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 14:32:32,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:32,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:32,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:32,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:32,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 14:32:32,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:32,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 14:32:32,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:32,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:32,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:32:32,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:32,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 14:32:32,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:32,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:32,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:32,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:32,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:32:32,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:32,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 14:32:32,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:32,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:32,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:32:32,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:32,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:32:32,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:32,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:32,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:32,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:32,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:32:32,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:32,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:32:32,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:32,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:32,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:32:32,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:32,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:32:32,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:32,772 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-25 14:32:32,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638263778] [2020-09-25 14:32:32,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:32:32,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 14:32:32,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151496268] [2020-09-25 14:32:32,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 14:32:32,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:32:32,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 14:32:32,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-25 14:32:32,776 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 17 states. [2020-09-25 14:32:33,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:32:33,060 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-25 14:32:33,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 14:32:33,061 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-09-25 14:32:33,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:32:33,063 INFO L225 Difference]: With dead ends: 51 [2020-09-25 14:32:33,063 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 14:32:33,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2020-09-25 14:32:33,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 14:32:33,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-09-25 14:32:33,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-25 14:32:33,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-09-25 14:32:33,076 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 58 [2020-09-25 14:32:33,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:32:33,077 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-09-25 14:32:33,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 14:32:33,077 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-09-25 14:32:33,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 14:32:33,078 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:32:33,078 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:32:33,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:32:33,079 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:32:33,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:32:33,079 INFO L82 PathProgramCache]: Analyzing trace with hash -807968423, now seen corresponding path program 7 times [2020-09-25 14:32:33,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:32:33,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115900717] [2020-09-25 14:32:33,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:32:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:33,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:33,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:33,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 14:32:33,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:33,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 660 [2020-09-25 14:32:33,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:33,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:33,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 14:32:33,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 14:32:33,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 14:32:33,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:33,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:32:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:33,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:33,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:33,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:32:33,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:33,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:32:33,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:33,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:33,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:32:33,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:33,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:32:33,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:33,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 14:32:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:33,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:34,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:34,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 14:32:34,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:34,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 607 [2020-09-25 14:32:34,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:34,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:34,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 14:32:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 14:32:34,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:34,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:34,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:34,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:34,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 14:32:34,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:34,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-09-25 14:32:34,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:34,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:34,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:32:34,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:34,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 14:32:34,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:34,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:35,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:35,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:35,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 14:32:35,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:35,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-09-25 14:32:35,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:35,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:35,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:32:35,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:35,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 14:32:35,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:35,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:35,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:35,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:35,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 14:32:35,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:35,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-25 14:32:35,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:35,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:35,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:32:35,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:35,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 14:32:35,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:35,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:35,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:35,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:35,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 14:32:35,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:35,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-25 14:32:35,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:35,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:35,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:32:35,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:35,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 14:32:35,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:32:35,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:35,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:35,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:35,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 14:32:35,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:35,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 14:32:35,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:35,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:35,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:32:35,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:35,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 14:32:35,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:32:35,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:35,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:36,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:36,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:32:36,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:36,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 14:32:36,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:36,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:36,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:32:36,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:36,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:32:36,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:32:36,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:36,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:36,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:36,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:32:36,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:36,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:32:36,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:36,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:36,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:32:36,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:36,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:32:36,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:36,158 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-25 14:32:36,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115900717] [2020-09-25 14:32:36,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:32:36,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 14:32:36,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807601271] [2020-09-25 14:32:36,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 14:32:36,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:32:36,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 14:32:36,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-09-25 14:32:36,162 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 19 states. [2020-09-25 14:32:36,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:32:36,524 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-09-25 14:32:36,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 14:32:36,525 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-09-25 14:32:36,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:32:36,526 INFO L225 Difference]: With dead ends: 55 [2020-09-25 14:32:36,527 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 14:32:36,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2020-09-25 14:32:36,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 14:32:36,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-25 14:32:36,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 14:32:36,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-25 14:32:36,543 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 65 [2020-09-25 14:32:36,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:32:36,546 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-25 14:32:36,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 14:32:36,546 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-25 14:32:36,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 14:32:36,549 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:32:36,549 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:32:36,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 14:32:36,550 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:32:36,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:32:36,551 INFO L82 PathProgramCache]: Analyzing trace with hash -705364310, now seen corresponding path program 8 times [2020-09-25 14:32:36,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:32:36,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763613502] [2020-09-25 14:32:36,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:32:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:36,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:37,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:37,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 14:32:37,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:37,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 860 [2020-09-25 14:32:37,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:37,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:37,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 14:32:37,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 14:32:37,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 14:32:37,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:37,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:32:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:37,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:37,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:37,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:32:37,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:37,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:32:37,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:37,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:37,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:32:37,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:37,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:32:37,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:37,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 14:32:37,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:37,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:38,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:38,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 14:32:38,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:38,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 671 [2020-09-25 14:32:38,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:38,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:38,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 14:32:38,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:38,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 14:32:38,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:38,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:38,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:38,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:38,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 14:32:38,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:38,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-09-25 14:32:38,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:38,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:38,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 14:32:38,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:38,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 14:32:38,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:38,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:38,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:39,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:39,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 14:32:39,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:39,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-09-25 14:32:39,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:39,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:39,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:32:39,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:39,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 14:32:39,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:39,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:39,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:39,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:39,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 14:32:39,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:39,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-09-25 14:32:39,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:39,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:39,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:32:39,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:39,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 14:32:39,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:39,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:39,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:39,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:39,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 14:32:39,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:39,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-25 14:32:39,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:39,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:39,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:32:39,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:39,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 14:32:39,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:39,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:39,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:39,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:39,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 14:32:39,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:39,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 14:32:39,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:39,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:39,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:32:39,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:39,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 14:32:39,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:39,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:39,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:40,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:40,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 14:32:40,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:40,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 14:32:40,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:40,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:40,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:32:40,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:40,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 14:32:40,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:40,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:40,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:40,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:40,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:32:40,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:40,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 14:32:40,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:40,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:40,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:32:40,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:40,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:32:40,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:40,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:40,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:40,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:40,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:32:40,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:40,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:32:40,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:40,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:40,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:32:40,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:40,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:32:40,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:40,300 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-25 14:32:40,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763613502] [2020-09-25 14:32:40,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:32:40,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 14:32:40,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839248438] [2020-09-25 14:32:40,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 14:32:40,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:32:40,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 14:32:40,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-09-25 14:32:40,308 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 21 states. [2020-09-25 14:32:40,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:32:40,782 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-25 14:32:40,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 14:32:40,782 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-09-25 14:32:40,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:32:40,784 INFO L225 Difference]: With dead ends: 59 [2020-09-25 14:32:40,784 INFO L226 Difference]: Without dead ends: 54 [2020-09-25 14:32:40,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2020-09-25 14:32:40,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-25 14:32:40,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-25 14:32:40,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 14:32:40,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-09-25 14:32:40,801 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 72 [2020-09-25 14:32:40,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:32:40,801 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-09-25 14:32:40,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 14:32:40,802 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-09-25 14:32:40,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 14:32:40,803 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:32:40,803 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:32:40,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 14:32:40,803 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:32:40,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:32:40,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1418439701, now seen corresponding path program 9 times [2020-09-25 14:32:40,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:32:40,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069237143] [2020-09-25 14:32:40,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:32:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:40,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:41,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:41,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 14:32:41,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:41,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 912 [2020-09-25 14:32:41,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:41,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:41,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 14:32:41,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-25 14:32:41,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 14:32:41,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:41,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:32:41,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:41,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:41,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:41,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:32:41,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:41,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:32:41,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:41,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:41,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:32:41,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:41,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:32:41,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:41,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 14:32:41,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:41,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:42,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:42,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 14:32:42,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:42,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 792 [2020-09-25 14:32:42,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:42,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:42,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 14:32:42,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:42,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 14:32:42,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:42,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:42,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:43,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:43,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 14:32:43,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:43,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 589 [2020-09-25 14:32:43,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:43,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:43,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 14:32:43,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:43,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 14:32:43,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:43,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:43,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:43,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:43,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 14:32:43,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:43,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-09-25 14:32:43,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:43,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:43,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 14:32:43,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:43,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 14:32:43,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:43,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:43,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:44,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:44,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 14:32:44,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:44,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-09-25 14:32:44,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:44,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:44,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:32:44,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:44,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 14:32:44,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:44,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:44,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:44,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:44,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 14:32:44,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:44,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-09-25 14:32:44,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:44,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:44,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:32:44,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:44,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 14:32:44,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:44,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:44,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:44,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:44,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 14:32:44,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:44,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-09-25 14:32:44,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:44,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:44,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:32:44,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:44,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 14:32:44,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:44,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:44,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:44,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:44,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 14:32:44,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:44,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 14:32:44,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:44,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:44,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:32:44,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:44,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 14:32:44,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:45,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:45,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:45,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:45,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 14:32:45,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:45,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 14:32:45,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:45,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:45,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:32:45,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:45,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 14:32:45,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:45,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:45,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:45,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:45,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:32:45,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:45,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 14:32:45,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:45,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:45,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:32:45,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:45,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:32:45,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:45,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:45,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:45,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:45,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:32:45,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:45,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:32:45,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:45,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:45,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:32:45,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:45,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:32:45,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:45,335 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-25 14:32:45,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069237143] [2020-09-25 14:32:45,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:32:45,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 14:32:45,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500012011] [2020-09-25 14:32:45,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 14:32:45,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:32:45,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 14:32:45,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-09-25 14:32:45,338 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 23 states. [2020-09-25 14:32:45,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:32:45,874 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2020-09-25 14:32:45,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-25 14:32:45,875 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 79 [2020-09-25 14:32:45,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:32:45,876 INFO L225 Difference]: With dead ends: 63 [2020-09-25 14:32:45,876 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 14:32:45,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=973, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 14:32:45,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 14:32:45,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-25 14:32:45,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 14:32:45,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-25 14:32:45,891 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 79 [2020-09-25 14:32:45,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:32:45,892 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-25 14:32:45,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 14:32:45,892 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-25 14:32:45,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 14:32:45,896 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:32:45,896 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:32:45,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 14:32:45,897 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:32:45,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:32:45,897 INFO L82 PathProgramCache]: Analyzing trace with hash -182126020, now seen corresponding path program 10 times [2020-09-25 14:32:45,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:32:45,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010135390] [2020-09-25 14:32:45,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:32:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:45,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:46,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:46,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 14:32:46,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:46,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1045 [2020-09-25 14:32:46,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:46,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:46,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 14:32:46,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 14:32:46,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 14:32:46,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:47,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:32:47,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:47,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:47,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:47,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:32:47,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:47,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:32:47,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:47,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:47,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:32:47,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:47,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:32:47,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:47,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 14:32:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:47,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:47,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:47,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 14:32:47,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:47,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 811 [2020-09-25 14:32:47,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:47,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:47,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 14:32:47,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:47,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 14:32:47,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:47,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:47,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:48,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:48,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 14:32:48,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:48,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 617 [2020-09-25 14:32:48,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:48,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:48,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 14:32:48,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:48,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 14:32:48,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:48,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:48,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:48,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:49,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:49,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 14:32:49,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:49,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 468 [2020-09-25 14:32:49,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:49,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:49,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 14:32:49,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:49,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 14:32:49,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:49,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:49,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:49,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:49,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 14:32:49,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:49,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-09-25 14:32:49,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:49,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:49,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 14:32:49,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:49,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 14:32:49,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:49,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:49,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:49,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:49,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 14:32:49,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:49,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-09-25 14:32:49,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:49,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:49,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:32:49,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:49,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 14:32:49,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:50,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:50,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:50,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:50,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 14:32:50,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:50,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-09-25 14:32:50,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:50,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:50,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:32:50,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:50,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 14:32:50,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:50,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:50,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:50,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:50,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 14:32:50,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:50,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 14:32:50,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:50,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:50,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:32:50,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:50,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 14:32:50,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:50,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:50,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:50,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:50,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 14:32:50,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:50,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 14:32:50,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:50,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:50,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:32:50,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:50,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 14:32:50,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:50,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:50,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:50,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:50,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 14:32:50,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:50,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 14:32:50,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:50,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:50,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:32:50,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:50,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 14:32:50,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:50,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:50,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:50,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:50,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:32:50,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:50,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 14:32:50,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:50,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:50,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:32:50,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:50,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:32:50,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:50,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:50,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:50,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:50,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:32:50,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:50,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:32:50,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:50,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:50,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:32:50,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:50,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:32:50,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:50,981 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-25 14:32:50,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010135390] [2020-09-25 14:32:50,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:32:50,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 14:32:50,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912083291] [2020-09-25 14:32:50,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 14:32:50,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:32:50,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 14:32:50,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-09-25 14:32:50,984 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 25 states. [2020-09-25 14:32:51,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:32:51,702 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-09-25 14:32:51,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-25 14:32:51,702 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-09-25 14:32:51,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:32:51,703 INFO L225 Difference]: With dead ends: 67 [2020-09-25 14:32:51,704 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 14:32:51,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=1169, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 14:32:51,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 14:32:51,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-09-25 14:32:51,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 14:32:51,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2020-09-25 14:32:51,712 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 86 [2020-09-25 14:32:51,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:32:51,713 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2020-09-25 14:32:51,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 14:32:51,713 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2020-09-25 14:32:51,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-25 14:32:51,714 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:32:51,714 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:32:51,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 14:32:51,715 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:32:51,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:32:51,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1527469181, now seen corresponding path program 11 times [2020-09-25 14:32:51,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:32:51,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073550619] [2020-09-25 14:32:51,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:32:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:51,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:52,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:52,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-25 14:32:52,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:52,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-09-25 14:32:52,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:52,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:52,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 14:32:52,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 14:32:52,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 14:32:52,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:52,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:32:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:52,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:52,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:52,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:32:52,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:52,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:32:52,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:52,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:52,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:32:52,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:52,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:32:52,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:52,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 14:32:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:52,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:53,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:53,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 14:32:53,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:53,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 907 [2020-09-25 14:32:53,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:53,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:53,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 14:32:53,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:53,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 14:32:53,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:53,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:53,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:54,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:54,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 14:32:54,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:54,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 755 [2020-09-25 14:32:54,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:54,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:54,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 14:32:54,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:54,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 14:32:54,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:54,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:54,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:55,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:55,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 14:32:55,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:55,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 593 [2020-09-25 14:32:55,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:55,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:55,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 14:32:55,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:55,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 14:32:55,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:55,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:55,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:55,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:55,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:55,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 14:32:55,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:55,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 472 [2020-09-25 14:32:55,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:55,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:55,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 14:32:55,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:55,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 14:32:55,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:55,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:55,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:56,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:56,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 14:32:56,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:56,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-09-25 14:32:56,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:56,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:56,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 14:32:56,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:56,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 14:32:56,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:56,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:56,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:56,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:56,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 14:32:56,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:56,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-09-25 14:32:56,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:56,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:56,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:32:56,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:56,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 14:32:56,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:56,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:56,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:56,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:56,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 14:32:56,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:56,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-25 14:32:56,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:56,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:56,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:32:56,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:56,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 14:32:56,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:56,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:56,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:56,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:56,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 14:32:56,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:56,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 14:32:56,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:56,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:56,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:32:56,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:56,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 14:32:56,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:57,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:57,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:57,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:57,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 14:32:57,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:57,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 14:32:57,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:57,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:57,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:32:57,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:57,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 14:32:57,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:57,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:57,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:57,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:57,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 14:32:57,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:57,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 14:32:57,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:57,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:57,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:32:57,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:57,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 14:32:57,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:57,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:57,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:57,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:57,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:32:57,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:57,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 14:32:57,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:57,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:57,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:32:57,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:57,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:32:57,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:57,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:57,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:57,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:57,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:32:57,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:57,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:32:57,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:57,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:57,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:32:57,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:57,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:32:57,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:57,562 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-09-25 14:32:57,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073550619] [2020-09-25 14:32:57,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:32:57,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 14:32:57,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123462972] [2020-09-25 14:32:57,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 14:32:57,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:32:57,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 14:32:57,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-09-25 14:32:57,565 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 27 states. [2020-09-25 14:32:58,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:32:58,396 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-25 14:32:58,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-25 14:32:58,397 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 93 [2020-09-25 14:32:58,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:32:58,399 INFO L225 Difference]: With dead ends: 71 [2020-09-25 14:32:58,399 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 14:32:58,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=99, Invalid=1383, Unknown=0, NotChecked=0, Total=1482 [2020-09-25 14:32:58,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 14:32:58,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-25 14:32:58,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 14:32:58,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-09-25 14:32:58,407 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 93 [2020-09-25 14:32:58,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:32:58,408 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-09-25 14:32:58,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 14:32:58,408 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-09-25 14:32:58,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-25 14:32:58,409 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:32:58,410 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:32:58,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 14:32:58,410 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:32:58,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:32:58,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1034648626, now seen corresponding path program 12 times [2020-09-25 14:32:58,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:32:58,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075880777] [2020-09-25 14:32:58,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:32:58,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:58,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:59,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:59,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 14:32:59,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:59,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1250 [2020-09-25 14:32:59,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:59,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:59,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 14:32:59,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-25 14:32:59,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 14:32:59,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:59,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:32:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:59,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:59,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:59,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:32:59,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:59,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:32:59,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:59,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:59,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:32:59,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:59,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:32:59,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:59,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 14:32:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:59,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:00,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:00,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 14:33:00,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:00,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1083 [2020-09-25 14:33:00,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:00,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:00,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 14:33:00,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:00,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 14:33:00,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:00,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:33:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:00,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:01,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:01,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 14:33:01,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:01,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 964 [2020-09-25 14:33:01,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:01,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:01,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 14:33:01,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:01,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 14:33:01,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:01,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:33:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:01,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:02,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:02,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 14:33:02,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:02,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 759 [2020-09-25 14:33:02,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:02,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:02,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 14:33:02,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:02,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 14:33:02,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:02,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:33:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:02,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:03,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:03,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 14:33:03,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:03,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 635 [2020-09-25 14:33:03,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:03,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:03,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 14:33:03,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:03,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 14:33:03,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:03,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:33:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:03,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:03,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:03,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 14:33:03,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:03,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-09-25 14:33:03,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:03,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:03,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 14:33:03,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:03,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 14:33:03,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:03,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:33:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:04,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:04,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:04,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 14:33:04,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:04,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-09-25 14:33:04,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:04,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:04,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 14:33:04,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:04,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 14:33:04,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:04,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:33:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:04,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:04,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:04,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 14:33:04,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:04,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-09-25 14:33:04,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:04,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:04,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:33:04,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:04,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 14:33:04,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:04,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:33:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:04,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:05,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:05,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 14:33:05,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:05,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-25 14:33:05,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:05,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:05,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:33:05,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:05,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 14:33:05,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:05,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:33:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:05,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:05,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:05,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 14:33:05,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:05,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 14:33:05,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:05,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:05,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:33:05,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:05,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 14:33:05,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:05,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:33:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:05,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:05,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:05,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 14:33:05,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:05,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 14:33:05,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:05,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:05,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:33:05,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:05,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 14:33:05,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:05,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:33:05,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:05,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:05,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:05,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 14:33:05,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:05,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 14:33:05,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:05,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:05,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:33:05,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:05,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 14:33:05,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:05,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:33:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:05,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:05,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:05,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:33:05,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:05,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:33:05,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:05,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:05,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:33:05,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:05,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:33:05,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:05,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:33:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:05,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:05,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:05,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:33:05,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:05,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:33:05,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:05,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:05,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:33:05,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:05,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:33:05,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:05,916 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-09-25 14:33:05,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075880777] [2020-09-25 14:33:05,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:33:05,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-25 14:33:05,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844310196] [2020-09-25 14:33:05,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-25 14:33:05,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:05,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-25 14:33:05,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-09-25 14:33:05,920 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 29 states. [2020-09-25 14:33:06,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:06,875 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2020-09-25 14:33:06,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-25 14:33:06,876 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 100 [2020-09-25 14:33:06,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:06,877 INFO L225 Difference]: With dead ends: 75 [2020-09-25 14:33:06,877 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 14:33:06,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=107, Invalid=1615, Unknown=0, NotChecked=0, Total=1722 [2020-09-25 14:33:06,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 14:33:06,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-25 14:33:06,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 14:33:06,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-25 14:33:06,895 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 100 [2020-09-25 14:33:06,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:06,896 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-25 14:33:06,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-25 14:33:06,896 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-25 14:33:06,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 14:33:06,899 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:06,899 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:06,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 14:33:06,899 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:06,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:06,900 INFO L82 PathProgramCache]: Analyzing trace with hash 996041487, now seen corresponding path program 13 times [2020-09-25 14:33:06,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:06,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604160677] [2020-09-25 14:33:06,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:06,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:08,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:08,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 14:33:08,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:08,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1468 [2020-09-25 14:33:08,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:08,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:08,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-25 14:33:08,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-25 14:33:08,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 14:33:08,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:08,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:08,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:08,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:08,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:08,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:08,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:08,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:33:08,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:08,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:08,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:08,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:08,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:08,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:08,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 14:33:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:08,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:09,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:09,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 14:33:09,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:09,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1323 [2020-09-25 14:33:09,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:09,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:09,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-25 14:33:09,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:09,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 14:33:09,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:09,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:33:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:09,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:10,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:10,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 14:33:10,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:10,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1099 [2020-09-25 14:33:10,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:10,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:10,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 14:33:10,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:10,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 14:33:10,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:10,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:33:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:11,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:11,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:11,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 14:33:11,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:11,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 965 [2020-09-25 14:33:11,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:11,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:11,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 14:33:11,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:11,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 14:33:11,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:12,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:33:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:12,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:12,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:12,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 14:33:12,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:12,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 737 [2020-09-25 14:33:12,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:12,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:12,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 14:33:12,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:12,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 14:33:12,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:12,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:33:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:12,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:13,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:13,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 14:33:13,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:13,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 579 [2020-09-25 14:33:13,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:13,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:13,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 14:33:13,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:13,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 14:33:13,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:13,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:33:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:13,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:13,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:13,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 14:33:13,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:13,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-09-25 14:33:13,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:13,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:13,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 14:33:13,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:13,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 14:33:13,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:14,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:33:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:14,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:14,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:14,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 14:33:14,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:14,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-09-25 14:33:14,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:14,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:14,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 14:33:14,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:14,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 14:33:14,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:14,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:33:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:14,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:14,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:14,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 14:33:14,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:14,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-09-25 14:33:14,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:14,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:14,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:33:14,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:14,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 14:33:14,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:14,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:33:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:14,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:14,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:14,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 14:33:14,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:14,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-25 14:33:14,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:14,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:14,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:33:14,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:14,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 14:33:14,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:15,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:33:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:15,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:15,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:15,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 14:33:15,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:15,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 14:33:15,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:15,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:15,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:33:15,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:15,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 14:33:15,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:15,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:33:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:15,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:15,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:15,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 14:33:15,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:15,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 14:33:15,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:15,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:15,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:33:15,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:15,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 14:33:15,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:15,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:33:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:15,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:15,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:15,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 14:33:15,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:15,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 14:33:15,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:15,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:15,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:33:15,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:15,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 14:33:15,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:15,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:33:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:15,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:15,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:15,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:33:15,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:15,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 14:33:15,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:15,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:15,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:33:15,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:15,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:33:15,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:15,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:33:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:15,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:15,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:15,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:33:15,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:15,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:33:15,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:15,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:15,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:33:15,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:15,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:33:15,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:15,792 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-09-25 14:33:15,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604160677] [2020-09-25 14:33:15,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:33:15,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-09-25 14:33:15,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636496089] [2020-09-25 14:33:15,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-25 14:33:15,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:15,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-25 14:33:15,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2020-09-25 14:33:15,794 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 31 states. [2020-09-25 14:33:16,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:16,843 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-09-25 14:33:16,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-09-25 14:33:16,844 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 107 [2020-09-25 14:33:16,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:16,845 INFO L225 Difference]: With dead ends: 79 [2020-09-25 14:33:16,845 INFO L226 Difference]: Without dead ends: 74 [2020-09-25 14:33:16,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=115, Invalid=1865, Unknown=0, NotChecked=0, Total=1980 [2020-09-25 14:33:16,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-25 14:33:16,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-09-25 14:33:16,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-25 14:33:16,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2020-09-25 14:33:16,853 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 107 [2020-09-25 14:33:16,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:16,854 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2020-09-25 14:33:16,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-25 14:33:16,854 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2020-09-25 14:33:16,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-25 14:33:16,855 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:16,856 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:16,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 14:33:16,856 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:16,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:16,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1701157728, now seen corresponding path program 14 times [2020-09-25 14:33:16,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:16,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362411112] [2020-09-25 14:33:16,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:16,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking...