/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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_i20_o20-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:24:02,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:24:02,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:24:02,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:24:02,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:24:02,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:24:02,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:24:02,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:24:02,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:24:02,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:24:02,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:24:02,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:24:02,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:24:02,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:24:02,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:24:02,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:24:02,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:24:02,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:24:02,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:24:02,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:24:02,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:24:02,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:24:02,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:24:02,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:24:02,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:24:02,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:24:02,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:24:02,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:24:02,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:24:02,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:24:02,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:24:02,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:24:02,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:24:02,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:24:02,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:24:02,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:24:02,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:24:02,507 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:24:02,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:24:02,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:24:02,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:24:02,510 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 [2020-09-21 12:24:02,552 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:24:02,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:24:02,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:24:02,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:24:02,554 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:24:02,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:24:02,555 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:24:02,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:24:02,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:24:02,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:24:02,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:24:02,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:24:02,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:24:02,556 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:24:02,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:24:02,557 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:24:02,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:24:02,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:24:02,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:24:02,557 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:24:02,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:24:02,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:24:02,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:24:02,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:24:02,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:24:02,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:24:02,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:24:02,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:24:02,559 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:24:02,559 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.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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:24:03,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:24:03,091 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:24:03,096 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:24:03,101 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:24:03,102 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:24:03,104 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i20_o20-2.c [2020-09-21 12:24:03,201 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f71870e5b/b764273d65e14765a549a312e674527b/FLAG8fb52ddd6 [2020-09-21 12:24:03,729 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:24:03,730 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_i20_o20-2.c [2020-09-21 12:24:03,738 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f71870e5b/b764273d65e14765a549a312e674527b/FLAG8fb52ddd6 [2020-09-21 12:24:04,069 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f71870e5b/b764273d65e14765a549a312e674527b [2020-09-21 12:24:04,082 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:24:04,087 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:24:04,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:24:04,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:24:04,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:24:04,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:24:04" (1/1) ... [2020-09-21 12:24:04,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd8ad23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:04, skipping insertion in model container [2020-09-21 12:24:04,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:24:04" (1/1) ... [2020-09-21 12:24:04,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:24:04,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:24:04,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:24:04,371 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:24:04,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:24:04,402 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:24:04,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:04 WrapperNode [2020-09-21 12:24:04,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:24:04,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:24:04,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:24:04,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:24:04,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:04" (1/1) ... [2020-09-21 12:24:04,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:04" (1/1) ... [2020-09-21 12:24:04,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:04" (1/1) ... [2020-09-21 12:24:04,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:04" (1/1) ... [2020-09-21 12:24:04,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:04" (1/1) ... [2020-09-21 12:24:04,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:04" (1/1) ... [2020-09-21 12:24:04,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:04" (1/1) ... [2020-09-21 12:24:04,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:24:04,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:24:04,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:24:04,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:24:04,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:04" (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 [2020-09-21 12:24:04,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:24:04,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:24:04,601 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-21 12:24:04,601 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:24:04,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:24:04,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:24:04,601 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-21 12:24:04,601 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:24:04,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:24:04,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:24:04,786 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:24:04,786 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 12:24:04,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:24:04 BoogieIcfgContainer [2020-09-21 12:24:04,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:24:04,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:24:04,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:24:04,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:24:04,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:24:04" (1/3) ... [2020-09-21 12:24:04,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e3b609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:24:04, skipping insertion in model container [2020-09-21 12:24:04,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:04" (2/3) ... [2020-09-21 12:24:04,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e3b609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:24:04, skipping insertion in model container [2020-09-21 12:24:04,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:24:04" (3/3) ... [2020-09-21 12:24:04,801 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i20_o20-2.c [2020-09-21 12:24:04,813 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:24:04,823 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:24:04,846 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:24:04,882 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:24:04,882 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:24:04,882 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:24:04,882 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:24:04,882 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:24:04,883 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:24:04,883 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:24:04,883 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:24:04,901 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-09-21 12:24:04,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 12:24:04,908 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:04,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:04,910 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:04,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:04,916 INFO L82 PathProgramCache]: Analyzing trace with hash -872342019, now seen corresponding path program 1 times [2020-09-21 12:24:04,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:04,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509561441] [2020-09-21 12:24:04,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:05,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:05,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:05,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:05,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 12:24:05,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:05,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-21 12:24:05,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:05,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:24:05,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:24:05,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:24:05,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:24:05,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:05,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:05,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:05,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:05,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:05,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:24:05,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:05,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:05,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:05,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:05,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:24:05,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:05,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:05,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:05,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:05,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:05,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:05,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-21 12:24:05,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:05,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:24:05,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:24:05,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:24:05,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:05,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:24:05,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509561441] [2020-09-21 12:24:05,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:24:05,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:24:05,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536396779] [2020-09-21 12:24:05,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:24:05,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:05,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:24:05,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:24:05,443 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2020-09-21 12:24:05,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:05,529 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-09-21 12:24:05,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:24:05,531 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-21 12:24:05,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:05,545 INFO L225 Difference]: With dead ends: 30 [2020-09-21 12:24:05,545 INFO L226 Difference]: Without dead ends: 18 [2020-09-21 12:24:05,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:24:05,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-09-21 12:24:05,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-09-21 12:24:05,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-09-21 12:24:05,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-09-21 12:24:05,596 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2020-09-21 12:24:05,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:05,597 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-09-21 12:24:05,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:24:05,597 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-09-21 12:24:05,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 12:24:05,599 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:05,600 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:05,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:24:05,600 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:05,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:05,601 INFO L82 PathProgramCache]: Analyzing trace with hash -953570577, now seen corresponding path program 1 times [2020-09-21 12:24:05,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:05,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179151591] [2020-09-21 12:24:05,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:05,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:05,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:06,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:06,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 12:24:06,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:06,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 576 [2020-09-21 12:24:06,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:06,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:24:06,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-21 12:24:06,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:24:06,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:06,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:06,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:06,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:06,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:06,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:06,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:24:06,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:06,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:06,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:06,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:06,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:06,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:06,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:06,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:06,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:24:06,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:06,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-21 12:24:06,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:06,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:24:06,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:06,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:24:06,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:06,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:06,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:06,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:06,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:06,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:06,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:24:06,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:06,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:24:06,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:06,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:24:06,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:06,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 12:24:06,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179151591] [2020-09-21 12:24:06,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:24:06,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:24:06,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784482302] [2020-09-21 12:24:06,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:24:06,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:06,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:24:06,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:24:06,370 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 7 states. [2020-09-21 12:24:06,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:06,403 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-09-21 12:24:06,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:24:06,404 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-21 12:24:06,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:06,405 INFO L225 Difference]: With dead ends: 25 [2020-09-21 12:24:06,405 INFO L226 Difference]: Without dead ends: 21 [2020-09-21 12:24:06,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:24:06,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-09-21 12:24:06,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-09-21 12:24:06,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-09-21 12:24:06,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-09-21 12:24:06,413 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2020-09-21 12:24:06,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:06,414 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-09-21 12:24:06,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:24:06,414 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-09-21 12:24:06,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 12:24:06,415 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:06,416 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:06,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:24:06,416 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:06,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:06,417 INFO L82 PathProgramCache]: Analyzing trace with hash 397359997, now seen corresponding path program 2 times [2020-09-21 12:24:06,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:06,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855373490] [2020-09-21 12:24:06,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:06,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:06,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:07,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:07,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 12:24:07,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:07,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 759 [2020-09-21 12:24:07,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:07,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:24:07,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-21 12:24:07,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 12:24:07,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:07,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:07,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:07,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:07,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:07,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:07,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:24:07,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:07,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:07,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:07,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:07,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:07,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:07,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:07,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:07,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:24:07,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:07,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-21 12:24:07,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:07,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:24:07,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:07,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:24:07,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:07,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:07,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:07,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:07,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:24:07,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:07,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-21 12:24:07,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:07,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:24:07,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:07,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:24:07,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:07,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:07,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:07,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:07,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:07,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:07,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:24:07,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:07,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:24:07,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:07,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:24:07,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:07,486 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-21 12:24:07,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855373490] [2020-09-21 12:24:07,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:24:07,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 12:24:07,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735475441] [2020-09-21 12:24:07,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:24:07,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:07,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:24:07,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:24:07,497 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 9 states. [2020-09-21 12:24:07,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:07,559 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-09-21 12:24:07,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:24:07,561 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-21 12:24:07,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:07,563 INFO L225 Difference]: With dead ends: 28 [2020-09-21 12:24:07,563 INFO L226 Difference]: Without dead ends: 24 [2020-09-21 12:24:07,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:24:07,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-21 12:24:07,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-09-21 12:24:07,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-21 12:24:07,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-09-21 12:24:07,583 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 25 [2020-09-21 12:24:07,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:07,584 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-09-21 12:24:07,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:24:07,584 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-09-21 12:24:07,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-21 12:24:07,586 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:07,586 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:07,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:24:07,588 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:07,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:07,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1198310127, now seen corresponding path program 3 times [2020-09-21 12:24:07,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:07,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893447197] [2020-09-21 12:24:07,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:07,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:07,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:08,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:08,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:24:08,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:08,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 859 [2020-09-21 12:24:08,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:08,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 12:24:08,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:24:08,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:24:08,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:08,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:08,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:08,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:08,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:08,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:08,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:24:08,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:08,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:08,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:08,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:08,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:08,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:08,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:08,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:08,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:24:08,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:08,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-21 12:24:08,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:08,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 12:24:08,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:24:08,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-21 12:24:08,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:08,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:08,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:08,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:08,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:24:08,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:08,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-21 12:24:08,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:08,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:24:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:24:08,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:08,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:08,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:08,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:08,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:24:08,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:08,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-21 12:24:08,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:08,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:24:08,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:08,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:24:08,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:08,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:08,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:08,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:08,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:08,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:08,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:24:08,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:08,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:24:08,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:08,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:24:08,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:08,984 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-21 12:24:08,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893447197] [2020-09-21 12:24:08,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:24:08,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 12:24:08,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655293554] [2020-09-21 12:24:08,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 12:24:08,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:08,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 12:24:08,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:24:08,990 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 10 states. [2020-09-21 12:24:09,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:09,108 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-09-21 12:24:09,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:24:09,109 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-09-21 12:24:09,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:09,110 INFO L225 Difference]: With dead ends: 31 [2020-09-21 12:24:09,110 INFO L226 Difference]: Without dead ends: 27 [2020-09-21 12:24:09,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:24:09,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-09-21 12:24:09,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-09-21 12:24:09,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-21 12:24:09,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-09-21 12:24:09,133 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 31 [2020-09-21 12:24:09,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:09,134 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-09-21 12:24:09,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 12:24:09,134 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-09-21 12:24:09,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-21 12:24:09,136 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:09,138 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:09,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:24:09,138 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:09,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:09,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1080764669, now seen corresponding path program 4 times [2020-09-21 12:24:09,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:09,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265348538] [2020-09-21 12:24:09,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:09,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:09,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:09,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:10,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:10,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-21 12:24:10,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:10,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-21 12:24:10,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:10,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-21 12:24:10,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-21 12:24:10,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 12:24:10,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:10,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:10,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:10,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:10,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:10,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:10,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:24:10,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:10,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:10,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:10,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:10,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:10,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:10,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:10,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:10,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:24:10,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:10,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-21 12:24:10,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:10,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:24:10,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:10,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-21 12:24:10,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:10,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:10,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:10,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:10,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:24:10,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:10,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-21 12:24:10,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:10,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:24:10,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:10,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-21 12:24:10,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:10,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:10,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:10,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:10,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:24:10,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:10,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-21 12:24:10,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:10,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:24:10,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:10,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:24:10,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:10,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:10,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:10,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:10,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:24:10,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:10,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-21 12:24:10,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:10,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:24:10,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:10,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:24:10,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:10,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:10,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:10,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:10,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:10,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:10,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:24:10,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:10,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:24:10,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:10,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:24:10,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:10,835 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-21 12:24:10,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265348538] [2020-09-21 12:24:10,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:24:10,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-21 12:24:10,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836733872] [2020-09-21 12:24:10,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-21 12:24:10,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:10,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-21 12:24:10,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-21 12:24:10,839 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 13 states. [2020-09-21 12:24:10,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:10,892 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-09-21 12:24:10,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 12:24:10,892 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2020-09-21 12:24:10,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:10,894 INFO L225 Difference]: With dead ends: 34 [2020-09-21 12:24:10,894 INFO L226 Difference]: Without dead ends: 30 [2020-09-21 12:24:10,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-21 12:24:10,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-21 12:24:10,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-21 12:24:10,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-21 12:24:10,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-21 12:24:10,904 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 37 [2020-09-21 12:24:10,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:10,904 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-21 12:24:10,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-21 12:24:10,904 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-21 12:24:10,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-21 12:24:10,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:10,906 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:10,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:24:10,907 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:10,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:10,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1752970513, now seen corresponding path program 5 times [2020-09-21 12:24:10,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:10,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204655816] [2020-09-21 12:24:10,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:10,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:11,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:11,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:11,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-21 12:24:11,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:11,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-21 12:24:11,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:11,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 12:24:11,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:24:11,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:24:11,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:11,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:11,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:11,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:11,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:11,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:11,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:24:11,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:11,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:11,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:11,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:11,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:11,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:11,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:12,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:12,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:24:12,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:12,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-09-21 12:24:12,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:12,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 12:24:12,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:24:12,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-21 12:24:12,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:12,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:12,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:12,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:12,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:24:12,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:12,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-09-21 12:24:12,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:12,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:24:12,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:12,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:24:12,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:12,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:12,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:12,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:12,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:24:12,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:12,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-21 12:24:12,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:12,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:24:12,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:12,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:24:12,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:12,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:12,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:12,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:12,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:12,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:24:12,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:12,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-21 12:24:12,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:12,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:24:12,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:12,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:24:12,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:12,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:12,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:12,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:12,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:24:12,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:12,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-21 12:24:12,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:12,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:24:12,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:12,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:24:12,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:12,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:12,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:12,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:12,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:12,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:12,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:24:12,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:12,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:24:12,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:12,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:24:12,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:12,923 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 2 proven. 52 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-21 12:24:12,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204655816] [2020-09-21 12:24:12,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:24:12,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-21 12:24:12,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654961382] [2020-09-21 12:24:12,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 12:24:12,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:12,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 12:24:12,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:24:12,926 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states. [2020-09-21 12:24:13,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:13,056 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-09-21 12:24:13,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:24:13,057 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-09-21 12:24:13,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:13,058 INFO L225 Difference]: With dead ends: 37 [2020-09-21 12:24:13,059 INFO L226 Difference]: Without dead ends: 33 [2020-09-21 12:24:13,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-09-21 12:24:13,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-21 12:24:13,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-21 12:24:13,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-21 12:24:13,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-09-21 12:24:13,067 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 43 [2020-09-21 12:24:13,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:13,068 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-09-21 12:24:13,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 12:24:13,068 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-09-21 12:24:13,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-21 12:24:13,070 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:13,070 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:13,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:24:13,071 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:13,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:13,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1590630787, now seen corresponding path program 6 times [2020-09-21 12:24:13,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:13,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730095410] [2020-09-21 12:24:13,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:13,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:13,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:14,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:14,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-21 12:24:14,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:14,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-21 12:24:14,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:14,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-21 12:24:14,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:24:14,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-21 12:24:14,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:14,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:14,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:14,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:14,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:14,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:14,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:24:14,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:14,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:14,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:14,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:14,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:14,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:14,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:14,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:14,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:24:14,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:14,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-09-21 12:24:14,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:14,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-21 12:24:14,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:24:14,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-21 12:24:14,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:14,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:14,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:14,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:14,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:24:14,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:14,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-09-21 12:24:14,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:14,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:24:14,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:14,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-21 12:24:14,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:14,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:14,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:14,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:14,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:24:14,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:14,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-21 12:24:14,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:14,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:24:14,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:14,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:24:14,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:14,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:14,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:15,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:15,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:24:15,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:15,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-21 12:24:15,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:15,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:24:15,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:15,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:24:15,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:15,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:15,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:15,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:15,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:24:15,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:15,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-21 12:24:15,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:15,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:24:15,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:15,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:24:15,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:15,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:15,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:15,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:15,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:24:15,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:15,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-21 12:24:15,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:15,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:24:15,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:15,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:24:15,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:15,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:15,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:15,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:15,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:15,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:15,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:24:15,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:15,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:24:15,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:15,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:24:15,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:15,331 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 6 proven. 72 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-21 12:24:15,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730095410] [2020-09-21 12:24:15,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:24:15,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-21 12:24:15,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485160485] [2020-09-21 12:24:15,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 12:24:15,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:15,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 12:24:15,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:24:15,334 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 12 states. [2020-09-21 12:24:15,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:15,487 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-09-21 12:24:15,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:24:15,487 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-09-21 12:24:15,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:15,489 INFO L225 Difference]: With dead ends: 40 [2020-09-21 12:24:15,489 INFO L226 Difference]: Without dead ends: 36 [2020-09-21 12:24:15,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-09-21 12:24:15,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-21 12:24:15,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-21 12:24:15,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-21 12:24:15,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-09-21 12:24:15,503 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 49 [2020-09-21 12:24:15,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:15,505 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-09-21 12:24:15,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 12:24:15,505 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-09-21 12:24:15,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-21 12:24:15,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:15,508 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:15,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:24:15,509 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:15,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:15,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1532150511, now seen corresponding path program 7 times [2020-09-21 12:24:15,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:15,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248435306] [2020-09-21 12:24:15,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:15,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:15,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:16,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:16,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 12:24:16,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:16,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:24:16,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:16,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 12:24:16,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-21 12:24:16,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 12:24:16,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:16,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:16,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:16,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:16,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:16,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:16,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:24:16,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:16,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:16,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:16,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:16,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:16,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:16,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:16,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:16,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 12:24:16,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:16,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-09-21 12:24:16,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:16,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:24:16,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:16,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-21 12:24:16,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:17,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:17,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:17,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:17,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:24:17,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:17,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-09-21 12:24:17,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:17,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:24:17,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 12:24:17,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:17,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:17,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:17,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:17,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:24:17,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:17,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-09-21 12:24:17,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:17,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:24:17,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:17,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-21 12:24:17,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:17,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:17,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:17,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:17,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:24:17,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:17,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-21 12:24:17,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:17,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:24:17,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:17,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-21 12:24:17,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:17,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:17,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:17,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:17,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:24:17,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:17,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-21 12:24:17,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:17,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:24:17,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:17,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-21 12:24:17,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:17,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:17,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:18,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:18,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:24:18,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:18,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-21 12:24:18,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:24:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:18,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:24:18,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:18,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:18,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:18,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:18,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:24:18,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:18,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-21 12:24:18,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:18,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:24:18,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:18,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:24:18,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:18,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:18,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:18,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:18,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:18,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:18,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:24:18,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:24:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:24:18,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:18,222 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-21 12:24:18,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248435306] [2020-09-21 12:24:18,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:24:18,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-21 12:24:18,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595532445] [2020-09-21 12:24:18,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-21 12:24:18,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:18,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-21 12:24:18,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-21 12:24:18,225 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 19 states. [2020-09-21 12:24:18,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:18,279 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-09-21 12:24:18,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-21 12:24:18,280 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 55 [2020-09-21 12:24:18,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:18,281 INFO L225 Difference]: With dead ends: 43 [2020-09-21 12:24:18,281 INFO L226 Difference]: Without dead ends: 39 [2020-09-21 12:24:18,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-21 12:24:18,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-21 12:24:18,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-09-21 12:24:18,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-21 12:24:18,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-09-21 12:24:18,289 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 55 [2020-09-21 12:24:18,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:18,290 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-09-21 12:24:18,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-21 12:24:18,290 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-09-21 12:24:18,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-21 12:24:18,291 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:18,291 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:18,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:24:18,292 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:18,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:18,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1140618237, now seen corresponding path program 8 times [2020-09-21 12:24:18,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:18,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779757537] [2020-09-21 12:24:18,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:18,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:18,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:19,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:19,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-21 12:24:19,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:19,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-21 12:24:19,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:19,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-21 12:24:19,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:24:19,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-21 12:24:19,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:19,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:19,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:19,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:19,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:19,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:19,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:24:19,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:19,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:19,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:19,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:19,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:19,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:19,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:19,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:19,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 12:24:19,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:19,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 478 [2020-09-21 12:24:19,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:19,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-21 12:24:19,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:24:19,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-21 12:24:19,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:19,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:19,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:20,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:20,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 12:24:20,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:20,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-09-21 12:24:20,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:20,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-21 12:24:20,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:20,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-21 12:24:20,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:20,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:20,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:20,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:20,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:24:20,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:20,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-09-21 12:24:20,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:20,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:24:20,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:20,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-21 12:24:20,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:20,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:20,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:20,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:20,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:24:20,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:20,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-21 12:24:20,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:20,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:24:20,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:20,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-21 12:24:20,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:20,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:20,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:21,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:21,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:24:21,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:21,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-21 12:24:21,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:21,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:24:21,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:21,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:24:21,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:21,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:21,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:21,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:21,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:24:21,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:21,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-21 12:24:21,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:21,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:24:21,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:21,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:24:21,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:21,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:21,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:21,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:21,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:24:21,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:21,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-21 12:24:21,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:24:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:21,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:24:21,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:21,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:21,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:21,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:21,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:24:21,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:21,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-21 12:24:21,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:21,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:24:21,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:21,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:24:21,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:21,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:21,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:21,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:21,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:21,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:21,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:21,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:24:21,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:21,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:24:21,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:21,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:24:21,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:21,461 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 12 proven. 128 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-21 12:24:21,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779757537] [2020-09-21 12:24:21,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:24:21,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-21 12:24:21,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441432143] [2020-09-21 12:24:21,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-21 12:24:21,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:21,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-21 12:24:21,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:24:21,464 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 15 states. [2020-09-21 12:24:21,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:21,617 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-09-21 12:24:21,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 12:24:21,618 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 61 [2020-09-21 12:24:21,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:21,619 INFO L225 Difference]: With dead ends: 46 [2020-09-21 12:24:21,619 INFO L226 Difference]: Without dead ends: 42 [2020-09-21 12:24:21,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=194, Invalid=358, Unknown=0, NotChecked=0, Total=552 [2020-09-21 12:24:21,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-21 12:24:21,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-21 12:24:21,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-21 12:24:21,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-09-21 12:24:21,627 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 61 [2020-09-21 12:24:21,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:21,627 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-09-21 12:24:21,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-21 12:24:21,627 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-09-21 12:24:21,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-21 12:24:21,628 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:21,629 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:21,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:24:21,629 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:21,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:21,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1749177617, now seen corresponding path program 9 times [2020-09-21 12:24:21,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:21,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986109449] [2020-09-21 12:24:21,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:21,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:21,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:22,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:22,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-21 12:24:22,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:22,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-21 12:24:22,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:22,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-21 12:24:22,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:24:22,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-21 12:24:22,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:22,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:22,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:22,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:22,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:22,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:22,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:24:22,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:22,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:22,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:22,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:22,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:22,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:22,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:23,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:23,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:24:23,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:23,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-09-21 12:24:23,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:23,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-21 12:24:23,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:24:23,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-21 12:24:23,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:23,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:23,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:23,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:23,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 12:24:23,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:23,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 494 [2020-09-21 12:24:23,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:23,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-21 12:24:23,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:23,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-21 12:24:23,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:23,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:23,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:24,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:24,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 12:24:24,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:24,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-09-21 12:24:24,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:24,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-21 12:24:24,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:24,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-21 12:24:24,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:24,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:24,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:24,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:24,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:24:24,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:24,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-09-21 12:24:24,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:24,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:24:24,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:24,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-21 12:24:24,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:24,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:24,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:24,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:24,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:24:24,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:24,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-09-21 12:24:24,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:24,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:24:24,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:24,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-21 12:24:24,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:24,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:24,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:24,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:24,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:24:24,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:24,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-21 12:24:24,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:24,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:24:24,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:24,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:24:24,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:24,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:24,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:25,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:25,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:24:25,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:25,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-21 12:24:25,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:25,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:24:25,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:25,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:24:25,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:25,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:25,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:25,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:25,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:24:25,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:25,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-21 12:24:25,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:25,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:24:25,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:25,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:24:25,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:25,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:25,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:25,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:25,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:24:25,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:25,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-21 12:24:25,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:25,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:24:25,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:25,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:24:25,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:25,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:25,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:25,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:25,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:25,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:25,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:24:25,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:25,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:24:25,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:25,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:24:25,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:25,394 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 30 proven. 148 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-21 12:24:25,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986109449] [2020-09-21 12:24:25,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:24:25,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-21 12:24:25,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317797460] [2020-09-21 12:24:25,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-21 12:24:25,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:25,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-21 12:24:25,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2020-09-21 12:24:25,397 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 16 states. [2020-09-21 12:24:25,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:25,580 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-09-21 12:24:25,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 12:24:25,581 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 67 [2020-09-21 12:24:25,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:25,582 INFO L225 Difference]: With dead ends: 49 [2020-09-21 12:24:25,582 INFO L226 Difference]: Without dead ends: 45 [2020-09-21 12:24:25,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=226, Invalid=424, Unknown=0, NotChecked=0, Total=650 [2020-09-21 12:24:25,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-21 12:24:25,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-21 12:24:25,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-21 12:24:25,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-09-21 12:24:25,598 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 67 [2020-09-21 12:24:25,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:25,599 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-09-21 12:24:25,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-21 12:24:25,599 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-09-21 12:24:25,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-21 12:24:25,600 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:25,600 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:25,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:24:25,601 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:25,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:25,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1580609155, now seen corresponding path program 10 times [2020-09-21 12:24:25,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:25,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131512329] [2020-09-21 12:24:25,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:25,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:25,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:26,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:26,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-21 12:24:26,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:26,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-21 12:24:26,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:26,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-21 12:24:26,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-21 12:24:26,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 12:24:26,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:26,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:26,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:26,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:26,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:26,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:26,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:24:26,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:26,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:26,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:26,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:26,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:26,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:26,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:27,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:27,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-21 12:24:27,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:27,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569 [2020-09-21 12:24:27,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:27,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-21 12:24:27,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:27,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-21 12:24:27,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:27,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:27,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:27,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:27,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:24:27,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:27,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-09-21 12:24:27,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:27,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-21 12:24:27,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:27,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-21 12:24:27,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:27,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:27,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:28,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:28,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 12:24:28,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:28,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 379 [2020-09-21 12:24:28,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:28,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-21 12:24:28,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:28,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-21 12:24:28,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:28,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:28,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:28,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:28,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 12:24:28,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:28,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-09-21 12:24:28,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:28,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:24:28,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:28,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-21 12:24:28,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:28,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:28,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:28,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:28,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:24:28,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:28,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-09-21 12:24:28,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:28,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:24:28,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:28,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 12:24:28,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:28,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:28,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:28,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:29,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:29,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:24:29,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:29,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-21 12:24:29,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:29,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:24:29,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:29,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-21 12:24:29,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:29,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:29,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:29,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:29,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:24:29,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:29,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-21 12:24:29,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:29,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:24:29,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:29,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-21 12:24:29,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:29,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:29,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:29,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:29,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:24:29,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:29,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-21 12:24:29,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:29,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:24:29,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:29,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-21 12:24:29,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:29,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:29,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:29,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:29,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:24:29,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:29,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-21 12:24:29,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:29,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:24:29,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:29,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:24:29,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:29,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:29,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:29,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:29,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:24:29,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:29,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 12:24:29,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:29,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:24:29,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:29,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:24:29,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:29,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:29,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:29,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:29,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:29,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:29,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:24:29,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:29,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:24:29,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:29,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:24:29,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:29,594 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-21 12:24:29,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131512329] [2020-09-21 12:24:29,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:24:29,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-21 12:24:29,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711542402] [2020-09-21 12:24:29,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-21 12:24:29,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:29,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-21 12:24:29,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-09-21 12:24:29,597 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 25 states. [2020-09-21 12:24:29,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:29,659 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-09-21 12:24:29,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-21 12:24:29,659 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 73 [2020-09-21 12:24:29,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:29,660 INFO L225 Difference]: With dead ends: 52 [2020-09-21 12:24:29,660 INFO L226 Difference]: Without dead ends: 48 [2020-09-21 12:24:29,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-09-21 12:24:29,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-21 12:24:29,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-21 12:24:29,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-21 12:24:29,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-09-21 12:24:29,667 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 73 [2020-09-21 12:24:29,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:29,668 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-09-21 12:24:29,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-21 12:24:29,668 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-09-21 12:24:29,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-21 12:24:29,669 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:29,669 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:29,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 12:24:29,670 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:29,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:29,670 INFO L82 PathProgramCache]: Analyzing trace with hash -223837457, now seen corresponding path program 11 times [2020-09-21 12:24:29,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:29,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463134184] [2020-09-21 12:24:29,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:29,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:29,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:30,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:30,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:30,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-21 12:24:30,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:30,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-21 12:24:30,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:30,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-21 12:24:30,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-21 12:24:30,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-21 12:24:30,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:30,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:30,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:30,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:30,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:30,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:30,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:24:30,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:30,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:30,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:30,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:30,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:30,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:30,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:30,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:31,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:31,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-21 12:24:31,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:31,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 608 [2020-09-21 12:24:31,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:31,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-21 12:24:31,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:31,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-21 12:24:31,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:31,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:31,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:31,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:31,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-21 12:24:31,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:31,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 496 [2020-09-21 12:24:31,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:31,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-21 12:24:31,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:31,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-21 12:24:31,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:31,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:31,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:32,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:32,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:24:32,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:32,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-09-21 12:24:32,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:32,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-21 12:24:32,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:32,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-21 12:24:32,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:32,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:32,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:32,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:32,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 12:24:32,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:32,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-09-21 12:24:32,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:32,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-21 12:24:32,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:32,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-21 12:24:32,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:32,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:32,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:33,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:33,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 12:24:33,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:33,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-09-21 12:24:33,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:33,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:24:33,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:33,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-21 12:24:33,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:33,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:33,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:33,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:33,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:24:33,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:33,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-21 12:24:33,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:33,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:24:33,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:33,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 12:24:33,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:33,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:33,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:33,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:33,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:33,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:24:33,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:33,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-21 12:24:33,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:33,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:24:33,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:33,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-21 12:24:33,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:33,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:33,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:33,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:33,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:24:33,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:33,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-21 12:24:33,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:33,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:24:33,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:33,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-21 12:24:33,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:33,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:33,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:33,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:33,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:24:33,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:33,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-21 12:24:33,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:33,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:24:33,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:33,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-21 12:24:33,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:33,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:33,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:33,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:33,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:24:33,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:33,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-21 12:24:33,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:33,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:24:33,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:33,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:24:33,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:34,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:34,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:34,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:34,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:24:34,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:34,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 12:24:34,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:34,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:24:34,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:34,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:24:34,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:34,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:34,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:34,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:34,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:34,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:34,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:24:34,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:34,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:24:34,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:34,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:24:34,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:34,174 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-09-21 12:24:34,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463134184] [2020-09-21 12:24:34,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:24:34,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-21 12:24:34,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194654967] [2020-09-21 12:24:34,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-21 12:24:34,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:34,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-21 12:24:34,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2020-09-21 12:24:34,177 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 27 states. [2020-09-21 12:24:34,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:34,258 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-09-21 12:24:34,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-21 12:24:34,258 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 79 [2020-09-21 12:24:34,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:34,260 INFO L225 Difference]: With dead ends: 55 [2020-09-21 12:24:34,264 INFO L226 Difference]: Without dead ends: 51 [2020-09-21 12:24:34,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2020-09-21 12:24:34,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-21 12:24:34,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-09-21 12:24:34,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-21 12:24:34,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2020-09-21 12:24:34,275 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 79 [2020-09-21 12:24:34,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:34,276 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2020-09-21 12:24:34,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-21 12:24:34,276 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2020-09-21 12:24:34,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-21 12:24:34,280 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:34,280 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:34,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 12:24:34,280 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:34,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:34,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1653931773, now seen corresponding path program 12 times [2020-09-21 12:24:34,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:34,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843018025] [2020-09-21 12:24:34,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:34,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:34,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:35,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:35,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-21 12:24:35,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:35,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-21 12:24:35,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:35,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-21 12:24:35,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:24:35,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-21 12:24:35,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:35,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:35,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:35,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:35,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:35,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:35,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:24:35,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:35,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:35,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:35,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:35,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:35,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:35,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:36,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:36,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-21 12:24:36,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:36,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 704 [2020-09-21 12:24:36,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:36,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-21 12:24:36,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:24:36,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-21 12:24:36,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:36,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:36,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:36,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:36,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-21 12:24:36,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:36,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 641 [2020-09-21 12:24:36,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:36,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-21 12:24:36,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:36,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-21 12:24:36,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:36,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:36,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:37,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:37,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-21 12:24:37,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:37,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-09-21 12:24:37,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:37,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-21 12:24:37,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:37,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-21 12:24:37,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:37,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:37,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:37,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:37,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:24:37,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:37,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 428 [2020-09-21 12:24:37,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:37,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-21 12:24:37,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:37,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-21 12:24:37,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:37,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:37,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:38,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:38,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 12:24:38,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:38,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-09-21 12:24:38,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:38,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-21 12:24:38,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:38,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-21 12:24:38,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:38,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:38,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:38,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:38,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:38,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 12:24:38,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:38,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-09-21 12:24:38,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:38,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-21 12:24:38,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:38,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-21 12:24:38,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:38,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:38,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:38,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:38,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:24:38,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:38,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-09-21 12:24:38,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:38,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:24:38,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:38,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-21 12:24:38,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:38,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:38,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:39,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:39,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:24:39,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:39,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-21 12:24:39,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:39,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:24:39,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:39,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-21 12:24:39,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:39,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:39,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:39,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:39,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:24:39,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:39,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-21 12:24:39,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:39,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:24:39,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:39,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:24:39,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:39,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:39,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:39,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:39,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:24:39,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:39,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-21 12:24:39,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:39,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:24:39,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:39,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:24:39,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:39,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:39,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:39,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:39,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:24:39,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:39,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-21 12:24:39,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:39,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:24:39,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:39,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:24:39,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:39,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:39,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:39,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:39,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:24:39,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:39,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 12:24:39,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:39,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:24:39,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:39,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:24:39,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:39,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:39,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:39,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:39,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:39,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:39,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:24:39,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:39,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:24:39,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:39,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:24:39,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:39,507 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 42 proven. 255 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-09-21 12:24:39,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843018025] [2020-09-21 12:24:39,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:24:39,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-21 12:24:39,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857898572] [2020-09-21 12:24:39,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-21 12:24:39,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:39,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-21 12:24:39,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2020-09-21 12:24:39,510 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 18 states. [2020-09-21 12:24:39,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:39,778 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2020-09-21 12:24:39,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-21 12:24:39,779 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 85 [2020-09-21 12:24:39,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:39,780 INFO L225 Difference]: With dead ends: 58 [2020-09-21 12:24:39,780 INFO L226 Difference]: Without dead ends: 54 [2020-09-21 12:24:39,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=333, Invalid=597, Unknown=0, NotChecked=0, Total=930 [2020-09-21 12:24:39,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-21 12:24:39,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-21 12:24:39,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-21 12:24:39,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-09-21 12:24:39,787 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 85 [2020-09-21 12:24:39,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:39,787 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-09-21 12:24:39,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-21 12:24:39,788 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-09-21 12:24:39,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-21 12:24:39,789 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:39,789 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:39,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 12:24:39,789 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:39,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:39,790 INFO L82 PathProgramCache]: Analyzing trace with hash -218674449, now seen corresponding path program 13 times [2020-09-21 12:24:39,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:39,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294081567] [2020-09-21 12:24:39,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:39,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:39,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:40,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:40,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-21 12:24:40,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:40,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:24:40,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:40,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-21 12:24:40,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-21 12:24:40,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 12:24:40,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:40,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:40,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:40,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:40,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:40,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:40,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:24:40,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:40,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:40,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:40,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:40,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:40,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:40,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:41,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:41,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-21 12:24:41,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:41,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 898 [2020-09-21 12:24:41,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:41,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-21 12:24:41,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:41,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-21 12:24:41,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:41,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:41,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:41,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:42,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:42,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-21 12:24:42,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:42,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 742 [2020-09-21 12:24:42,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:42,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-21 12:24:42,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:42,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-21 12:24:42,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:42,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:42,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:43,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:43,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-21 12:24:43,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:43,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 587 [2020-09-21 12:24:43,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:43,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-21 12:24:43,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:43,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-21 12:24:43,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:43,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:43,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:43,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:43,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-21 12:24:43,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:43,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 506 [2020-09-21 12:24:43,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:43,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-21 12:24:43,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:43,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-21 12:24:43,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:43,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:43,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:43,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:44,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:44,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:24:44,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:44,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-09-21 12:24:44,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:44,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-21 12:24:44,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:44,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-21 12:24:44,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:44,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:44,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:44,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:44,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 12:24:44,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:44,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-09-21 12:24:44,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:44,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-21 12:24:44,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:44,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-21 12:24:44,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:44,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:44,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:44,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:44,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 12:24:44,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:44,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-09-21 12:24:44,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:44,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:24:44,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:44,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-21 12:24:44,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:44,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:44,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:45,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:45,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:24:45,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:45,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-09-21 12:24:45,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:45,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:24:45,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:45,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 12:24:45,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:45,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:45,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:45,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:45,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:24:45,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:45,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-21 12:24:45,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:45,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:24:45,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:45,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-21 12:24:45,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:45,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:45,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:45,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:45,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:24:45,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:45,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-21 12:24:45,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:45,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:24:45,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:45,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-21 12:24:45,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:45,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:45,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:45,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:45,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:24:45,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:45,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-21 12:24:45,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:45,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:24:45,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:45,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-21 12:24:45,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:45,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:45,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:45,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:45,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:24:45,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:45,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-21 12:24:45,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:45,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:24:45,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:45,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:24:45,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:46,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:46,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:46,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:46,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:24:46,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:46,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 12:24:46,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:46,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:24:46,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:46,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:24:46,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:46,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:46,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:46,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:46,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:46,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:46,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:46,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:24:46,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:46,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:24:46,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:46,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:24:46,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:46,225 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-09-21 12:24:46,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294081567] [2020-09-21 12:24:46,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:24:46,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-09-21 12:24:46,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427781625] [2020-09-21 12:24:46,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-21 12:24:46,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:46,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-21 12:24:46,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2020-09-21 12:24:46,227 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 31 states. [2020-09-21 12:24:46,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:46,321 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-09-21 12:24:46,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-21 12:24:46,323 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 91 [2020-09-21 12:24:46,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:46,324 INFO L225 Difference]: With dead ends: 61 [2020-09-21 12:24:46,324 INFO L226 Difference]: Without dead ends: 57 [2020-09-21 12:24:46,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2020-09-21 12:24:46,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-21 12:24:46,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-09-21 12:24:46,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-21 12:24:46,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2020-09-21 12:24:46,331 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 91 [2020-09-21 12:24:46,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:46,332 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2020-09-21 12:24:46,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-21 12:24:46,332 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2020-09-21 12:24:46,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-09-21 12:24:46,333 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:46,333 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:46,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 12:24:46,333 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:46,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:46,334 INFO L82 PathProgramCache]: Analyzing trace with hash 492436605, now seen corresponding path program 14 times [2020-09-21 12:24:46,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:46,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192706338] [2020-09-21 12:24:46,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:46,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:46,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:47,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:47,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-21 12:24:47,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:47,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-21 12:24:47,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:47,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-21 12:24:47,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-09-21 12:24:47,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-21 12:24:47,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:47,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:47,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:47,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:47,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:47,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:47,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:24:47,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:47,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:47,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:47,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:47,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:47,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:47,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:48,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:48,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-21 12:24:48,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:48,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 955 [2020-09-21 12:24:48,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:48,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-21 12:24:48,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:48,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-21 12:24:48,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:48,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:48,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:49,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:49,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-21 12:24:49,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:49,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:24:49,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:49,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-21 12:24:49,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:49,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-21 12:24:49,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:49,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:49,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:50,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:50,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-21 12:24:50,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:50,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 951 [2020-09-21 12:24:50,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:50,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-21 12:24:50,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:50,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-21 12:24:50,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:50,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:50,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:51,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:51,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-21 12:24:51,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:51,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 636 [2020-09-21 12:24:51,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:51,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-21 12:24:51,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:51,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-21 12:24:51,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:51,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:51,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:51,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:51,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-21 12:24:51,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:51,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 503 [2020-09-21 12:24:51,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:51,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-21 12:24:51,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:51,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-21 12:24:51,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:51,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:51,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:51,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:52,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:52,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:24:52,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:52,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446 [2020-09-21 12:24:52,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:52,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-21 12:24:52,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:52,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-21 12:24:52,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:52,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:52,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:52,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:52,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 12:24:52,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:52,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 407 [2020-09-21 12:24:52,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:52,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-21 12:24:52,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:52,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-21 12:24:52,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:52,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:52,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:52,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:52,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 12:24:52,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:52,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-09-21 12:24:52,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:52,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:24:52,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:52,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-21 12:24:52,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:53,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:53,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:53,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:53,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:53,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:24:53,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:53,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-21 12:24:53,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:53,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:24:53,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:53,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 12:24:53,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:53,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:53,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:53,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:53,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:24:53,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:53,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-21 12:24:53,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:53,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:24:53,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:53,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-21 12:24:53,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:53,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:53,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:53,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:53,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:24:53,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:53,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-21 12:24:53,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:53,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:24:53,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:53,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-21 12:24:53,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:53,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:53,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:53,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:53,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:24:53,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:53,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-21 12:24:53,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:53,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:24:53,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:53,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-21 12:24:53,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:53,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:53,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:53,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:53,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:24:53,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:53,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-21 12:24:53,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:53,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:24:53,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:53,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:24:53,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:53,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:53,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:53,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:53,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:24:53,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:53,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 12:24:53,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:53,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:24:53,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:53,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:24:53,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:53,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:54,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:54,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:54,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:54,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:54,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:24:54,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:54,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:24:54,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:54,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:24:54,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:54,090 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-09-21 12:24:54,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192706338] [2020-09-21 12:24:54,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:24:54,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-09-21 12:24:54,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906992519] [2020-09-21 12:24:54,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-09-21 12:24:54,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:54,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-09-21 12:24:54,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2020-09-21 12:24:54,092 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 33 states. [2020-09-21 12:24:54,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:54,190 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-09-21 12:24:54,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-21 12:24:54,191 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 97 [2020-09-21 12:24:54,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:54,192 INFO L225 Difference]: With dead ends: 64 [2020-09-21 12:24:54,192 INFO L226 Difference]: Without dead ends: 60 [2020-09-21 12:24:54,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2020-09-21 12:24:54,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-21 12:24:54,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-21 12:24:54,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-21 12:24:54,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-09-21 12:24:54,199 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 97 [2020-09-21 12:24:54,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:54,200 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-09-21 12:24:54,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-09-21 12:24:54,200 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-09-21 12:24:54,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-21 12:24:54,201 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:54,201 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:54,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-21 12:24:54,202 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:54,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:54,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1083048687, now seen corresponding path program 15 times [2020-09-21 12:24:54,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:54,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268934266] [2020-09-21 12:24:54,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:54,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:54,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:55,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:55,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-21 12:24:55,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:55,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:24:55,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:55,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-21 12:24:55,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:24:55,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-21 12:24:55,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:55,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:55,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:55,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:55,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:55,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:55,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:24:55,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:55,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:55,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:55,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:55,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:55,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:55,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:55,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking...