/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_15x0-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:05:26,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:05:26,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:05:26,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:05:26,390 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:05:26,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:05:26,400 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:05:26,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:05:26,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:05:26,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:05:26,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:05:26,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:05:26,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:05:26,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:05:26,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:05:26,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:05:26,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:05:26,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:05:26,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:05:26,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:05:26,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:05:26,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:05:26,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:05:26,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:05:26,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:05:26,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:05:26,449 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:05:26,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:05:26,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:05:26,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:05:26,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:05:26,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:05:26,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:05:26,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:05:26,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:05:26,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:05:26,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:05:26,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:05:26,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:05:26,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:05:26,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:05:26,458 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 [2020-09-24 17:05:26,483 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:05:26,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:05:26,485 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:05:26,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:05:26,485 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:05:26,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:05:26,486 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:05:26,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:05:26,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:05:26,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:05:26,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:05:26,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:05:26,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:05:26,487 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:05:26,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:05:26,488 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:05:26,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:05:26,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:05:26,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:05:26,489 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:05:26,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:05:26,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:05:26,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:05:26,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:05:26,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:05:26,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:05:26,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:05:26,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:05:26,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:05:26,491 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;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;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;log-additional-information=true; [2020-09-24 17:05:26,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:05:26,978 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:05:26,984 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:05:26,987 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:05:26,988 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:05:26,990 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_15x0-2.c [2020-09-24 17:05:27,066 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/683a97949/06249d3f91d14e75be11499ba7d6539a/FLAG07215e8d6 [2020-09-24 17:05:27,595 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:05:27,596 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_15x0-2.c [2020-09-24 17:05:27,604 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/683a97949/06249d3f91d14e75be11499ba7d6539a/FLAG07215e8d6 [2020-09-24 17:05:27,936 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/683a97949/06249d3f91d14e75be11499ba7d6539a [2020-09-24 17:05:27,950 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:05:27,955 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:05:27,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:05:27,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:05:27,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:05:27,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:05:27" (1/1) ... [2020-09-24 17:05:27,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21af3704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:27, skipping insertion in model container [2020-09-24 17:05:27,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:05:27" (1/1) ... [2020-09-24 17:05:27,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:05:28,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:05:28,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:05:28,228 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:05:28,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:05:28,261 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:05:28,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:28 WrapperNode [2020-09-24 17:05:28,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:05:28,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:05:28,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:05:28,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:05:28,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:28" (1/1) ... [2020-09-24 17:05:28,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:28" (1/1) ... [2020-09-24 17:05:28,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:28" (1/1) ... [2020-09-24 17:05:28,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:28" (1/1) ... [2020-09-24 17:05:28,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:28" (1/1) ... [2020-09-24 17:05:28,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:28" (1/1) ... [2020-09-24 17:05:28,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:28" (1/1) ... [2020-09-24 17:05:28,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:05:28,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:05:28,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:05:28,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:05:28,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:28" (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 [2020-09-24 17:05:28,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:05:28,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:05:28,451 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-09-24 17:05:28,451 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:05:28,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:05:28,451 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-09-24 17:05:28,451 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:05:28,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:05:28,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:05:28,654 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:05:28,655 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 17:05:28,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:05:28 BoogieIcfgContainer [2020-09-24 17:05:28,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:05:28,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:05:28,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:05:28,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:05:28,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:05:27" (1/3) ... [2020-09-24 17:05:28,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32016bee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:05:28, skipping insertion in model container [2020-09-24 17:05:28,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:28" (2/3) ... [2020-09-24 17:05:28,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32016bee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:05:28, skipping insertion in model container [2020-09-24 17:05:28,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:05:28" (3/3) ... [2020-09-24 17:05:28,669 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_15x0-2.c [2020-09-24 17:05:28,678 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:05:28,688 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:05:28,709 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:05:28,737 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:05:28,737 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:05:28,737 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:05:28,737 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:05:28,738 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:05:28,738 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:05:28,738 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:05:28,738 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:05:28,757 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-24 17:05:28,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-24 17:05:28,764 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:28,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:28,765 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:28,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:28,772 INFO L82 PathProgramCache]: Analyzing trace with hash 989240825, now seen corresponding path program 1 times [2020-09-24 17:05:28,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:28,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372804935] [2020-09-24 17:05:28,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:28,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:29,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:29,176 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:29,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 17:05:29,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:05:29,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-09-24 17:05:29,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:29,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:05:29,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:05:29,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:05:29,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:05:29,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:29,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:29,270 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:29,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:29,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:29,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:05:29,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:29,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:29,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:29,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:29,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 17:05:29,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:29,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:29,329 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:29,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:05:29,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:29,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 17:05:29,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:29,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:05:29,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:05:29,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:05:29,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:29,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:05:29,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372804935] [2020-09-24 17:05:29,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:05:29,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 17:05:29,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366873490] [2020-09-24 17:05:29,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 17:05:29,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:29,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 17:05:29,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:05:29,400 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-09-24 17:05:29,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:29,508 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-09-24 17:05:29,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 17:05:29,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-24 17:05:29,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:29,527 INFO L225 Difference]: With dead ends: 39 [2020-09-24 17:05:29,527 INFO L226 Difference]: Without dead ends: 25 [2020-09-24 17:05:29,532 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 [2020-09-24 17:05:29,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-24 17:05:29,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-24 17:05:29,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-24 17:05:29,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-09-24 17:05:29,595 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2020-09-24 17:05:29,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:29,596 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-09-24 17:05:29,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 17:05:29,596 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-09-24 17:05:29,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 17:05:29,599 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:29,599 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:29,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:05:29,600 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:29,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:29,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1852726759, now seen corresponding path program 1 times [2020-09-24 17:05:29,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:29,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108616807] [2020-09-24 17:05:29,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:29,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:29,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:30,140 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:30,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 17:05:30,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:05:30,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-09-24 17:05:30,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:30,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 17:05:30,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:05:30,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 17:05:30,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:30,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:30,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:30,253 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:30,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:30,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:30,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:05:30,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:30,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:30,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:30,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:30,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:30,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:30,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:30,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:30,538 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:30,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 17:05:30,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:05:30,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-09-24 17:05:30,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:30,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:30,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:30,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:05:30,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:30,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:05:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:30,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:30,611 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:30,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:05:30,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:30,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 17:05:30,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:30,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:30,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:30,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:05:30,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:30,652 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 17:05:30,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108616807] [2020-09-24 17:05:30,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:30,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 17:05:30,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323324599] [2020-09-24 17:05:30,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 17:05:30,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:30,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 17:05:30,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-24 17:05:30,658 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 10 states. [2020-09-24 17:05:30,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:30,820 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-09-24 17:05:30,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 17:05:30,820 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-09-24 17:05:30,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:30,822 INFO L225 Difference]: With dead ends: 36 [2020-09-24 17:05:30,822 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 17:05:30,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-09-24 17:05:30,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 17:05:30,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-24 17:05:30,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 17:05:30,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-24 17:05:30,831 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 27 [2020-09-24 17:05:30,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:30,832 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-24 17:05:30,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 17:05:30,832 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-24 17:05:30,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 17:05:30,834 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:30,834 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:30,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:05:30,835 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:30,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:30,835 INFO L82 PathProgramCache]: Analyzing trace with hash -175020829, now seen corresponding path program 2 times [2020-09-24 17:05:30,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:30,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31262877] [2020-09-24 17:05:30,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:30,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:30,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:31,383 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:31,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 17:05:31,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:05:31,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 536 [2020-09-24 17:05:31,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:31,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 17:05:31,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:05:31,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:05:31,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:31,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:31,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:31,405 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:31,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:31,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:31,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:31,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:31,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:31,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:31,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:31,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:31,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:31,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:31,503 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:31,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 17:05:31,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:31,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-24 17:05:31,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:31,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 17:05:31,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:05:31,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 17:05:31,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:31,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:05:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:31,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:31,589 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:31,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 17:05:31,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:31,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 17:05:31,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:31,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:31,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:31,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:05:31,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:31,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:05:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:31,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:31,634 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:31,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:05:31,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:31,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 17:05:31,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:31,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:31,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:31,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:05:31,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:31,657 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 17:05:31,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31262877] [2020-09-24 17:05:31,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:31,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 17:05:31,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592096427] [2020-09-24 17:05:31,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 17:05:31,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:31,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 17:05:31,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 17:05:31,660 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 8 states. [2020-09-24 17:05:31,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:31,750 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-09-24 17:05:31,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 17:05:31,751 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-09-24 17:05:31,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:31,753 INFO L225 Difference]: With dead ends: 41 [2020-09-24 17:05:31,753 INFO L226 Difference]: Without dead ends: 35 [2020-09-24 17:05:31,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 17:05:31,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-24 17:05:31,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-24 17:05:31,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-24 17:05:31,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-09-24 17:05:31,761 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 36 [2020-09-24 17:05:31,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:31,762 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-09-24 17:05:31,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 17:05:31,762 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-09-24 17:05:31,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-24 17:05:31,764 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:31,765 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:31,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:05:31,765 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:31,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:31,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1021564803, now seen corresponding path program 3 times [2020-09-24 17:05:31,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:31,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20579309] [2020-09-24 17:05:31,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:31,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:31,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:32,609 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:32,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 17:05:32,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:05:32,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 828 [2020-09-24 17:05:32,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:32,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 17:05:32,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:05:32,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 17:05:32,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:32,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:32,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:32,629 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:32,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:32,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:32,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:32,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:32,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:32,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:32,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:32,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:32,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:32,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:32,798 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:32,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 17:05:32,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:32,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-24 17:05:32,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:32,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 17:05:32,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:05:32,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 17:05:32,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:32,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:05:32,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:32,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:32,925 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:32,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 17:05:32,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:32,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-24 17:05:32,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:32,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:32,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:32,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 17:05:32,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:32,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:05:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:32,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:33,028 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:33,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 17:05:33,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:33,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 17:05:33,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:33,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:33,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:33,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:05:33,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:33,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:05:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:33,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:33,065 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:33,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:05:33,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:33,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 17:05:33,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:33,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:33,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:33,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:05:33,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:33,089 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 17:05:33,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20579309] [2020-09-24 17:05:33,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:33,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 17:05:33,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849611587] [2020-09-24 17:05:33,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 17:05:33,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:33,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 17:05:33,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:05:33,092 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 9 states. [2020-09-24 17:05:33,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:33,183 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-09-24 17:05:33,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 17:05:33,184 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-09-24 17:05:33,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:33,186 INFO L225 Difference]: With dead ends: 46 [2020-09-24 17:05:33,186 INFO L226 Difference]: Without dead ends: 40 [2020-09-24 17:05:33,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-09-24 17:05:33,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-24 17:05:33,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-24 17:05:33,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-24 17:05:33,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-09-24 17:05:33,195 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 45 [2020-09-24 17:05:33,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:33,195 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-09-24 17:05:33,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 17:05:33,196 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-09-24 17:05:33,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 17:05:33,197 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:33,197 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:33,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:05:33,198 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:33,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:33,198 INFO L82 PathProgramCache]: Analyzing trace with hash -263249715, now seen corresponding path program 4 times [2020-09-24 17:05:33,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:33,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393599419] [2020-09-24 17:05:33,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:33,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:33,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:35,235 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:35,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 17:05:35,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:05:35,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2022 [2020-09-24 17:05:35,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:35,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 17:05:35,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:05:35,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 17:05:35,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:35,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:35,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:35,263 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:35,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:35,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:35,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:05:35,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:35,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:35,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:35,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:35,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:05:35,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:35,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:35,534 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:35,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:05:35,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:35,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-09-24 17:05:35,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:35,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 17:05:35,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:05:35,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 17:05:35,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:35,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:05:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:35,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:35,769 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:35,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 17:05:35,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:35,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-24 17:05:35,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:35,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:35,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:35,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:05:35,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:35,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:05:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:35,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:35,920 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:35,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 17:05:35,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:35,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-24 17:05:35,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:35,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:35,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:35,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 17:05:35,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:35,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:05:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:35,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:35,995 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:35,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 17:05:35,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:35,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 17:05:35,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:35,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:35,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:35,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:05:35,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:36,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:05:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:36,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:36,053 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:36,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:05:36,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:36,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 17:05:36,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:36,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:36,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:36,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:05:36,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:36,094 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-24 17:05:36,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393599419] [2020-09-24 17:05:36,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:36,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 17:05:36,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562908014] [2020-09-24 17:05:36,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 17:05:36,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:36,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 17:05:36,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:05:36,098 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 9 states. [2020-09-24 17:05:36,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:36,215 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-24 17:05:36,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 17:05:36,216 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-09-24 17:05:36,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:36,220 INFO L225 Difference]: With dead ends: 51 [2020-09-24 17:05:36,220 INFO L226 Difference]: Without dead ends: 45 [2020-09-24 17:05:36,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-09-24 17:05:36,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-24 17:05:36,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-24 17:05:36,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-24 17:05:36,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-09-24 17:05:36,232 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 54 [2020-09-24 17:05:36,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:36,236 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-09-24 17:05:36,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 17:05:36,236 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-09-24 17:05:36,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-24 17:05:36,237 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:36,238 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:36,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 17:05:36,239 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:36,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:36,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1884999187, now seen corresponding path program 5 times [2020-09-24 17:05:36,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:36,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999216766] [2020-09-24 17:05:36,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:36,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:36,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:40,065 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:40,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 17:05:40,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:05:40,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3810 [2020-09-24 17:05:40,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:40,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 17:05:40,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:05:40,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 17:05:40,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:40,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:40,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:40,088 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:40,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:40,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:40,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:40,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:40,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:40,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:40,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:40,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:40,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:40,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:40,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:40,391 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:40,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 17:05:40,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:40,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-09-24 17:05:40,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:40,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 17:05:40,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:05:40,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-24 17:05:40,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:40,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:05:40,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:40,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:40,677 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:40,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:05:40,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:40,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-09-24 17:05:40,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:40,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:40,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:40,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 17:05:40,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:40,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:05:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:40,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:40,872 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:40,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 17:05:40,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:40,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-24 17:05:40,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:40,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:40,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:40,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:05:40,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:40,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:05:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:40,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:40,969 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:40,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 17:05:40,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:40,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 17:05:40,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:40,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:40,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:40,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 17:05:40,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:40,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:05:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:40,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:41,038 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:41,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 17:05:41,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:41,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 17:05:41,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:41,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:41,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:41,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:05:41,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:41,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:05:41,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:41,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:41,075 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:41,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:05:41,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:41,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 17:05:41,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:41,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:41,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:41,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:05:41,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:41,109 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 8 proven. 72 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-24 17:05:41,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999216766] [2020-09-24 17:05:41,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:41,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 17:05:41,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291498134] [2020-09-24 17:05:41,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 17:05:41,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:41,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 17:05:41,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 17:05:41,113 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 11 states. [2020-09-24 17:05:41,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:41,227 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2020-09-24 17:05:41,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 17:05:41,228 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2020-09-24 17:05:41,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:41,229 INFO L225 Difference]: With dead ends: 56 [2020-09-24 17:05:41,230 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 17:05:41,230 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 [2020-09-24 17:05:41,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 17:05:41,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-24 17:05:41,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 17:05:41,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-24 17:05:41,238 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 63 [2020-09-24 17:05:41,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:41,238 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-24 17:05:41,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 17:05:41,239 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-24 17:05:41,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 17:05:41,240 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:41,240 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:41,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 17:05:41,241 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:41,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:41,241 INFO L82 PathProgramCache]: Analyzing trace with hash -441437769, now seen corresponding path program 6 times [2020-09-24 17:05:41,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:41,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687819920] [2020-09-24 17:05:41,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:41,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:41,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:45,111 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:45,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-24 17:05:45,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:05:45,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3858 [2020-09-24 17:05:45,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:45,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-24 17:05:45,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:05:45,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 17:05:45,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:45,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:45,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:45,161 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:45,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:45,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:45,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:45,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:45,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:45,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:45,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:45,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:45,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:45,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:45,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:45,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:48,128 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:48,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 17:05:48,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:05:48,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2942 [2020-09-24 17:05:48,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:48,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-24 17:05:48,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:48,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 17:05:48,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:48,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:05:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:48,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:48,792 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:48,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 17:05:48,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:48,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 579 [2020-09-24 17:05:48,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:48,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 17:05:48,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:48,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 17:05:48,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:48,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:05:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:48,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:49,271 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:49,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:05:49,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:49,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-09-24 17:05:49,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:49,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 17:05:49,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:49,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 17:05:49,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:49,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:05:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:49,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:49,577 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:49,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 17:05:49,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:49,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-09-24 17:05:49,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:49,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:05:49,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:49,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:05:49,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:49,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:05:49,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:49,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:49,807 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:49,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 17:05:49,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:49,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-24 17:05:49,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:49,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:05:49,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:49,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 17:05:49,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:49,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:05:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:49,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:49,949 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:49,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 17:05:49,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:49,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 17:05:49,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:49,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:49,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:49,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:05:49,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:50,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:05:50,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:50,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:50,029 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:50,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:05:50,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:50,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 17:05:50,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:50,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:50,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:50,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:05:50,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:50,110 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 6 proven. 101 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-09-24 17:05:50,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687819920] [2020-09-24 17:05:50,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:50,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 17:05:50,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186592310] [2020-09-24 17:05:50,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 17:05:50,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:50,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 17:05:50,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2020-09-24 17:05:50,113 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 21 states. [2020-09-24 17:05:50,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:50,617 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-09-24 17:05:50,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 17:05:50,618 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-09-24 17:05:50,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:50,619 INFO L225 Difference]: With dead ends: 61 [2020-09-24 17:05:50,619 INFO L226 Difference]: Without dead ends: 55 [2020-09-24 17:05:50,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=358, Invalid=1534, Unknown=0, NotChecked=0, Total=1892 [2020-09-24 17:05:50,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-24 17:05:50,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-24 17:05:50,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 17:05:50,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-09-24 17:05:50,628 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 72 [2020-09-24 17:05:50,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:50,629 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-09-24 17:05:50,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 17:05:50,629 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-09-24 17:05:50,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-24 17:05:50,630 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:50,630 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:50,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 17:05:50,631 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:50,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:50,631 INFO L82 PathProgramCache]: Analyzing trace with hash 999943849, now seen corresponding path program 7 times [2020-09-24 17:05:50,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:50,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308934582] [2020-09-24 17:05:50,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:50,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:50,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:55,546 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:55,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 17:05:55,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:05:55,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4903 [2020-09-24 17:05:55,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:55,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 17:05:55,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:05:55,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 17:05:55,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:55,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:55,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:55,567 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:55,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:55,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:55,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:55,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:55,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:55,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:55,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:55,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:55,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:55,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:55,946 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:55,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 17:05:55,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:55,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-09-24 17:05:55,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:55,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 17:05:55,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:05:55,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-24 17:05:55,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:56,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:05:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:56,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:56,341 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:56,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 17:05:56,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:56,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-09-24 17:05:56,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:56,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 17:05:56,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:56,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 17:05:56,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:56,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:05:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:56,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:56,629 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:56,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 17:05:56,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:56,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-09-24 17:05:56,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:56,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:05:56,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:56,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 17:05:56,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:56,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:05:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:56,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:56,865 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:56,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:05:56,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:56,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-24 17:05:56,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:56,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:56,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:56,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 17:05:56,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:56,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:05:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:56,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:57,005 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:57,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 17:05:57,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:57,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-24 17:05:57,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:57,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:57,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:57,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:05:57,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:57,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:05:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:57,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:57,107 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:57,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 17:05:57,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:57,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 17:05:57,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:57,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:57,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:57,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 17:05:57,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:57,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:05:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:57,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:57,183 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:57,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 17:05:57,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:57,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 17:05:57,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:57,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:57,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:57,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:05:57,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:57,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:05:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:57,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:57,227 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:57,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:05:57,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:57,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 17:05:57,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:57,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:57,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:57,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:05:57,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:57,279 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 15 proven. 149 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-24 17:05:57,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308934582] [2020-09-24 17:05:57,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:57,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 17:05:57,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569561613] [2020-09-24 17:05:57,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 17:05:57,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:57,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 17:05:57,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-09-24 17:05:57,282 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 14 states. [2020-09-24 17:05:57,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:57,442 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2020-09-24 17:05:57,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 17:05:57,443 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 81 [2020-09-24 17:05:57,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:57,444 INFO L225 Difference]: With dead ends: 66 [2020-09-24 17:05:57,445 INFO L226 Difference]: Without dead ends: 60 [2020-09-24 17:05:57,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=303, Unknown=0, NotChecked=0, Total=462 [2020-09-24 17:05:57,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-24 17:05:57,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-24 17:05:57,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 17:05:57,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-09-24 17:05:57,453 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 81 [2020-09-24 17:05:57,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:57,453 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-09-24 17:05:57,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 17:05:57,454 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-09-24 17:05:57,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-24 17:05:57,455 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:57,455 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:57,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 17:05:57,456 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:57,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:57,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1356134305, now seen corresponding path program 8 times [2020-09-24 17:05:57,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:57,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878350019] [2020-09-24 17:05:57,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:57,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:57,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:03,647 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:03,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-24 17:06:03,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:06:03,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6176 [2020-09-24 17:06:03,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:03,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-09-24 17:06:03,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:06:03,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 17:06:03,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:03,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:03,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:03,685 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:03,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:03,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:03,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:06:03,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:03,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:03,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:03,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:03,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:03,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:06:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:03,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:03,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:08,705 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:08,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-24 17:06:08,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:06:08,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 17:06:08,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:08,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-09-24 17:06:08,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:08,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-24 17:06:08,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:08,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:06:08,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:08,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:09,513 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:09,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 17:06:09,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:09,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 744 [2020-09-24 17:06:09,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:09,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-09-24 17:06:09,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:09,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 17:06:09,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:09,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:06:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:09,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:10,154 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:10,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 17:06:10,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:10,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 571 [2020-09-24 17:06:10,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:10,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-24 17:06:10,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:10,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 17:06:10,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:10,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:06:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:10,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:10,673 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:10,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 17:06:10,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:10,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 461 [2020-09-24 17:06:10,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 17:06:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 17:06:10,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:10,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:06:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:10,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:11,030 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:11,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:06:11,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:11,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-09-24 17:06:11,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:11,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 17:06:11,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:11,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 17:06:11,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:11,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:06:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:11,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:11,279 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:11,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 17:06:11,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:11,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-24 17:06:11,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:11,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:06:11,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:11,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:06:11,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:11,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:06:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:11,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:11,476 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:11,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 17:06:11,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:11,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-24 17:06:11,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:11,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:06:11,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:11,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 17:06:11,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:11,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:06:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:11,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:11,611 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:11,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 17:06:11,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:11,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 17:06:11,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:11,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:06:11,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:11,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:06:11,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:11,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:06:11,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:11,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:11,691 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:11,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:06:11,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:11,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 17:06:11,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:11,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:06:11,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:11,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:06:11,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:11,803 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 15 proven. 176 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-09-24 17:06:11,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878350019] [2020-09-24 17:06:11,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:06:11,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-24 17:06:11,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222251574] [2020-09-24 17:06:11,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-24 17:06:11,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:11,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-24 17:06:11,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2020-09-24 17:06:11,807 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 25 states. [2020-09-24 17:06:12,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:12,575 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-24 17:06:12,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-24 17:06:12,575 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 90 [2020-09-24 17:06:12,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:12,577 INFO L225 Difference]: With dead ends: 71 [2020-09-24 17:06:12,577 INFO L226 Difference]: Without dead ends: 65 [2020-09-24 17:06:12,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 758 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=547, Invalid=2209, Unknown=0, NotChecked=0, Total=2756 [2020-09-24 17:06:12,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-24 17:06:12,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-24 17:06:12,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-24 17:06:12,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2020-09-24 17:06:12,586 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 90 [2020-09-24 17:06:12,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:12,587 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2020-09-24 17:06:12,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-24 17:06:12,587 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2020-09-24 17:06:12,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-24 17:06:12,588 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:12,588 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:12,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 17:06:12,589 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:12,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:12,589 INFO L82 PathProgramCache]: Analyzing trace with hash -928437697, now seen corresponding path program 9 times [2020-09-24 17:06:12,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:12,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708062810] [2020-09-24 17:06:12,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:12,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:12,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:12,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:20,758 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:20,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-24 17:06:20,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:06:20,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8151 [2020-09-24 17:06:20,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:20,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 17:06:20,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:06:20,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 17:06:20,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:20,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:20,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:20,783 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:20,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:20,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:20,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:06:20,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:20,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:20,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:20,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:20,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:20,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:06:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:20,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:21,320 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:21,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 17:06:21,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:21,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-09-24 17:06:21,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:21,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 17:06:21,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:06:21,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-24 17:06:21,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:21,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:06:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:21,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:21,831 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:21,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-24 17:06:21,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:21,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-09-24 17:06:21,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:21,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 17:06:21,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:21,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-24 17:06:21,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:21,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:06:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:21,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:22,253 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:22,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 17:06:22,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:22,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-09-24 17:06:22,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:22,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:06:22,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:22,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 17:06:22,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:22,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:06:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:22,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:22,563 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:22,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 17:06:22,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:22,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-09-24 17:06:22,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:22,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 17:06:22,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:22,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 17:06:22,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:22,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:06:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:22,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:22,801 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:22,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 17:06:22,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:22,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-09-24 17:06:22,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:22,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:06:22,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:22,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 17:06:22,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:22,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:06:22,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:22,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:22,983 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:22,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:06:22,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:22,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-24 17:06:22,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:06:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 17:06:22,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:23,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:06:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:23,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:23,124 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:23,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 17:06:23,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:23,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-24 17:06:23,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:23,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:06:23,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:23,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:06:23,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:23,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:06:23,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:23,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:23,223 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:23,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 17:06:23,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:23,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 17:06:23,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:23,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:06:23,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:23,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 17:06:23,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:23,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:06:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:23,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:23,283 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:23,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 17:06:23,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:23,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 17:06:23,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:23,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:06:23,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:23,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:06:23,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:23,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:06:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:23,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:23,322 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:23,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:06:23,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:23,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 17:06:23,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:23,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:06:23,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:23,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:06:23,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:23,391 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 40 proven. 204 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-09-24 17:06:23,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708062810] [2020-09-24 17:06:23,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:06:23,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 17:06:23,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551999225] [2020-09-24 17:06:23,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 17:06:23,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:23,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 17:06:23,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-24 17:06:23,393 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 15 states.