/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --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/fibo_2calls_25-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:39:40,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:39:40,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:39:40,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:39:40,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:39:40,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:39:40,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:39:40,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:39:40,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:39:40,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:39:40,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:39:40,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:39:40,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:39:40,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:39:40,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:39:40,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:39:40,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:39:40,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:39:40,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:39:40,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:39:40,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:39:40,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:39:40,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:39:40,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:39:40,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:39:40,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:39:40,530 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:39:40,531 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:39:40,531 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:39:40,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:39:40,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:39:40,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:39:40,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:39:40,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:39:40,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:39:40,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:39:40,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:39:40,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:39:40,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:39:40,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:39:40,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:39:40,541 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 22:39:40,567 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:39:40,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:39:40,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:39:40,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:39:40,569 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:39:40,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:39:40,569 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:39:40,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:39:40,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:39:40,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:39:40,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:39:40,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:39:40,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:39:40,571 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:39:40,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:39:40,571 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:39:40,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:39:40,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:39:40,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:39:40,572 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:39:40,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:39:40,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:39:40,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:39:40,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:39:40,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:39:40,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:39:40,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:39:40,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:39:40,574 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:39:40,574 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:39:41,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:39:41,032 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:39:41,037 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:39:41,039 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:39:41,040 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:39:41,041 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_25-1.c [2020-09-24 22:39:41,136 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01920f4d7/45b90e9ffc80451b84beaf11e9d781ff/FLAGac04e62ee [2020-09-24 22:39:41,680 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:39:41,680 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_25-1.c [2020-09-24 22:39:41,688 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01920f4d7/45b90e9ffc80451b84beaf11e9d781ff/FLAGac04e62ee [2020-09-24 22:39:42,026 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01920f4d7/45b90e9ffc80451b84beaf11e9d781ff [2020-09-24 22:39:42,039 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:39:42,046 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:39:42,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:39:42,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:39:42,052 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:39:42,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:39:42" (1/1) ... [2020-09-24 22:39:42,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f0616b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:42, skipping insertion in model container [2020-09-24 22:39:42,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:39:42" (1/1) ... [2020-09-24 22:39:42,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:39:42,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:39:42,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:39:42,328 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:39:42,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:39:42,369 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:39:42,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:42 WrapperNode [2020-09-24 22:39:42,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:39:42,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:39:42,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:39:42,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:39:42,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:42" (1/1) ... [2020-09-24 22:39:42,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:42" (1/1) ... [2020-09-24 22:39:42,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:42" (1/1) ... [2020-09-24 22:39:42,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:42" (1/1) ... [2020-09-24 22:39:42,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:42" (1/1) ... [2020-09-24 22:39:42,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:42" (1/1) ... [2020-09-24 22:39:42,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:42" (1/1) ... [2020-09-24 22:39:42,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:39:42,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:39:42,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:39:42,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:39:42,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:42" (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 22:39:42,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:39:42,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:39:42,586 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-24 22:39:42,586 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-24 22:39:42,586 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:39:42,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:39:42,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:39:42,586 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-24 22:39:42,587 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-24 22:39:42,587 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:39:42,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:39:42,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:39:42,845 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:39:42,845 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 22:39:42,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:39:42 BoogieIcfgContainer [2020-09-24 22:39:42,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:39:42,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:39:42,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:39:42,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:39:42,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:39:42" (1/3) ... [2020-09-24 22:39:42,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e6465c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:39:42, skipping insertion in model container [2020-09-24 22:39:42,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:42" (2/3) ... [2020-09-24 22:39:42,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e6465c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:39:42, skipping insertion in model container [2020-09-24 22:39:42,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:39:42" (3/3) ... [2020-09-24 22:39:42,863 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_25-1.c [2020-09-24 22:39:42,879 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:39:42,890 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:39:42,916 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:39:42,951 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:39:42,952 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:39:42,952 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:39:42,952 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:39:42,953 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:39:42,953 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:39:42,953 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:39:42,953 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:39:42,979 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-24 22:39:42,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 22:39:42,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:42,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:42,989 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:42,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:42,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-24 22:39:43,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:43,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228666241] [2020-09-24 22:39:43,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:43,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:43,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:39:43,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:43,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-09-24 22:39:43,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:43,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:43,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 22:39:43,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:43,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:39:43,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:43,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:43,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:43,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:43,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:43,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:43,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:43,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:43,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:43,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:43,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:43,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:43,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:43,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:43,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:43,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 22:39:43,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:43,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:39:43,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:43,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:39:43,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:43,475 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 22:39:43,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228666241] [2020-09-24 22:39:43,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:39:43,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:39:43,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876629776] [2020-09-24 22:39:43,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:39:43,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:43,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:39:43,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:39:43,507 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-24 22:39:43,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:43,617 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-24 22:39:43,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:39:43,620 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 22:39:43,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:43,634 INFO L225 Difference]: With dead ends: 58 [2020-09-24 22:39:43,635 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 22:39:43,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:39:43,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 22:39:43,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 22:39:43,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 22:39:43,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 22:39:43,707 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-24 22:39:43,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:43,708 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 22:39:43,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:39:43,709 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 22:39:43,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 22:39:43,711 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:43,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:43,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:39:43,712 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:43,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:43,713 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-24 22:39:43,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:43,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865437218] [2020-09-24 22:39:43,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:43,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:43,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 22:39:43,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:43,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-24 22:39:43,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:43,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:43,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 22:39:43,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:43,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:43,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:43,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:43,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:43,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:43,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:39:43,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:43,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:43,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:43,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:43,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:43,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:43,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:44,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:44,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:44,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:44,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 22:39:44,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:44,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:39:44,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:44,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:44,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:44,030 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 22:39:44,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865437218] [2020-09-24 22:39:44,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:39:44,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:39:44,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055681893] [2020-09-24 22:39:44,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:39:44,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:44,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:39:44,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:39:44,034 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-24 22:39:44,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:44,074 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-24 22:39:44,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:39:44,075 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 22:39:44,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:44,077 INFO L225 Difference]: With dead ends: 50 [2020-09-24 22:39:44,077 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 22:39:44,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:39:44,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 22:39:44,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-24 22:39:44,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 22:39:44,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 22:39:44,094 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-24 22:39:44,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:44,094 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 22:39:44,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:39:44,095 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 22:39:44,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 22:39:44,098 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:44,099 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:44,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:39:44,099 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:44,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:44,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-24 22:39:44,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:44,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406075716] [2020-09-24 22:39:44,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:44,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:44,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:44,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:44,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:46,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 22:39:46,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:39:46,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1925 [2020-09-24 22:39:46,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:46,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:46,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 22:39:46,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:39:46,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:46,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:46,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:46,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:46,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:46,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:46,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:46,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:46,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:46,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:46,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:46,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:46,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:46,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 22:39:46,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:46,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-09-24 22:39:46,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:46,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:46,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:39:46,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:46,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:46,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:46,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:46,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:46,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:46,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:39:46,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:46,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:46,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:46,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:46,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:46,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:39:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:46,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:46,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:46,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:46,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:39:46,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:46,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:46,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 22:39:46,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:46,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:46,577 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 22:39:46,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406075716] [2020-09-24 22:39:46,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:46,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 22:39:46,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585299934] [2020-09-24 22:39:46,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 22:39:46,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:46,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 22:39:46,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:39:46,587 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 8 states. [2020-09-24 22:39:46,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:46,778 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2020-09-24 22:39:46,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:39:46,780 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-09-24 22:39:46,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:46,782 INFO L225 Difference]: With dead ends: 82 [2020-09-24 22:39:46,782 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 22:39:46,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:39:46,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 22:39:46,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-09-24 22:39:46,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-24 22:39:46,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-09-24 22:39:46,811 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 33 [2020-09-24 22:39:46,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:46,812 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-09-24 22:39:46,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 22:39:46,812 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-09-24 22:39:46,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 22:39:46,818 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:46,819 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:46,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:39:46,820 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:46,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:46,821 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 1 times [2020-09-24 22:39:46,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:46,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803132864] [2020-09-24 22:39:46,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:46,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:47,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 22:39:47,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:47,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1103 [2020-09-24 22:39:47,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:47,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:47,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 22:39:47,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:39:47,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:47,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:47,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:47,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:47,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:47,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:47,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:47,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:47,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:47,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:47,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:47,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:47,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:48,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:48,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:48,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:48,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 22:39:48,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:48,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:39:48,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:48,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 22:39:48,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:48,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:48,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:48,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:48,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:48,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:48,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 22:39:48,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:48,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:39:48,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:48,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:48,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:48,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:48,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:48,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:48,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:48,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:48,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:48,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 22:39:48,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:48,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:48,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:48,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:48,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:48,171 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 22:39:48,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803132864] [2020-09-24 22:39:48,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:39:48,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 22:39:48,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078816520] [2020-09-24 22:39:48,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:39:48,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:48,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:39:48,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:39:48,175 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 9 states. [2020-09-24 22:39:48,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:48,278 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-09-24 22:39:48,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 22:39:48,278 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-24 22:39:48,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:48,281 INFO L225 Difference]: With dead ends: 63 [2020-09-24 22:39:48,281 INFO L226 Difference]: Without dead ends: 57 [2020-09-24 22:39:48,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-24 22:39:48,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-24 22:39:48,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2020-09-24 22:39:48,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-24 22:39:48,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2020-09-24 22:39:48,293 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 34 [2020-09-24 22:39:48,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:48,293 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2020-09-24 22:39:48,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:39:48,294 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2020-09-24 22:39:48,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 22:39:48,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:48,296 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:48,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:39:48,296 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:48,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:48,297 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-24 22:39:48,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:48,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737798655] [2020-09-24 22:39:48,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:48,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:48,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:48,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:48,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:48,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:50,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:50,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 22:39:50,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:39:50,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1820 [2020-09-24 22:39:50,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:50,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:50,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 22:39:50,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 22:39:50,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:39:50,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:50,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:50,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:50,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:50,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:50,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:39:50,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:50,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:50,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:50,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:50,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:50,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:50,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:50,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:50,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:50,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:50,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 22:39:50,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:50,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-09-24 22:39:50,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:50,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:50,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:50,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:39:50,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:50,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:50,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:50,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:50,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:50,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:50,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 22:39:50,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:50,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:50,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:50,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:50,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:50,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:50,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:50,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:50,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:50,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:50,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:50,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:50,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 22:39:50,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:50,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:50,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:50,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:50,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:50,847 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 22:39:50,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737798655] [2020-09-24 22:39:50,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:50,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:39:50,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442055929] [2020-09-24 22:39:50,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:39:50,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:50,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:39:50,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:39:50,859 INFO L87 Difference]: Start difference. First operand 52 states and 63 transitions. Second operand 9 states. [2020-09-24 22:39:51,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:51,005 INFO L93 Difference]: Finished difference Result 100 states and 128 transitions. [2020-09-24 22:39:51,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:39:51,006 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-24 22:39:51,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:51,008 INFO L225 Difference]: With dead ends: 100 [2020-09-24 22:39:51,008 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 22:39:51,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:39:51,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 22:39:51,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-09-24 22:39:51,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-24 22:39:51,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2020-09-24 22:39:51,019 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 35 [2020-09-24 22:39:51,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:51,019 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2020-09-24 22:39:51,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:39:51,020 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2020-09-24 22:39:51,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-24 22:39:51,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:51,022 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:51,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:39:51,022 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:51,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:51,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1875452576, now seen corresponding path program 1 times [2020-09-24 22:39:51,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:51,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775168744] [2020-09-24 22:39:51,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:51,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:51,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:51,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:51,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:51,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:51,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:52,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:55,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:56,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:56,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 22:39:56,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 22:39:56,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 22:39:56,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:56,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:39:56,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 22:39:56,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 22:39:56,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:56,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:56,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:56,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:56,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:56,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:56,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:56,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:56,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:56,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:56,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:56,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:56,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:56,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:56,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:56,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:56,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:56,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:58,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:58,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 22:39:58,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:39:58,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2684 [2020-09-24 22:39:58,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:58,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:58,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 22:39:58,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:58,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:58,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:58,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:58,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:58,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 22:39:58,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:58,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 22:39:58,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:58,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:58,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:39:58,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:58,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:58,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:58,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:58,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:58,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:58,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:58,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 22:39:58,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:58,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:58,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:58,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:58,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:58,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:39:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:58,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:58,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:58,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:58,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:58,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:39:58,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:58,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:58,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 22:39:58,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:58,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:58,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 22:39:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:58,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:58,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:58,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:58,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:58,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:39:58,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:58,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:58,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 22:39:58,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:58,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:58,914 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 22:39:58,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775168744] [2020-09-24 22:39:58,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:58,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 22:39:58,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139689970] [2020-09-24 22:39:58,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 22:39:58,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:58,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 22:39:58,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:39:58,918 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 8 states. [2020-09-24 22:39:59,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:59,036 INFO L93 Difference]: Finished difference Result 100 states and 123 transitions. [2020-09-24 22:39:59,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:39:59,037 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-09-24 22:39:59,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:59,038 INFO L225 Difference]: With dead ends: 100 [2020-09-24 22:39:59,038 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 22:39:59,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:39:59,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 22:39:59,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-24 22:39:59,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 22:39:59,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2020-09-24 22:39:59,056 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 50 [2020-09-24 22:39:59,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:59,058 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2020-09-24 22:39:59,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 22:39:59,058 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2020-09-24 22:39:59,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 22:39:59,063 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:59,064 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:59,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:39:59,065 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:59,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:59,065 INFO L82 PathProgramCache]: Analyzing trace with hash 104828256, now seen corresponding path program 1 times [2020-09-24 22:39:59,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:59,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724452737] [2020-09-24 22:39:59,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:59,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:59,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:59,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:59,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:59,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:59,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:59,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:01,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:04,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:04,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 22:40:04,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 22:40:04,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 22:40:04,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:04,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:40:04,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 22:40:04,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 22:40:04,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:40:04,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:40:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:04,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:04,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:04,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:40:04,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:04,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:40:04,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:04,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:04,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:04,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:04,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:04,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:40:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:04,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:04,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:04,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:04,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:04,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:06,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:06,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 22:40:06,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:40:06,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2439 [2020-09-24 22:40:06,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:06,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:40:06,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:40:06,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 22:40:06,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:06,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:06,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:06,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:06,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:06,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:06,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:40:06,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:40:06,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-09-24 22:40:06,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:06,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:40:06,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:06,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 22:40:06,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:06,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:06,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:06,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:06,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:06,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:06,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:40:06,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 22:40:06,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:06,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:40:06,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:40:06,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:40:06,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:40:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:06,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:06,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:06,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:06,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:06,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:40:06,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:06,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:40:06,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:06,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:40:06,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:06,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:40:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:06,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:06,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:06,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:06,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:06,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:40:06,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:06,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:40:06,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:40:06,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:40:06,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:40:07,028 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 22:40:07,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724452737] [2020-09-24 22:40:07,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:40:07,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 22:40:07,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26756400] [2020-09-24 22:40:07,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 22:40:07,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:40:07,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 22:40:07,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:40:07,033 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 10 states. [2020-09-24 22:40:07,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:40:07,299 INFO L93 Difference]: Finished difference Result 102 states and 124 transitions. [2020-09-24 22:40:07,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:40:07,299 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2020-09-24 22:40:07,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:40:07,301 INFO L225 Difference]: With dead ends: 102 [2020-09-24 22:40:07,301 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 22:40:07,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-09-24 22:40:07,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 22:40:07,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-24 22:40:07,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 22:40:07,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2020-09-24 22:40:07,311 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 51 [2020-09-24 22:40:07,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:40:07,311 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2020-09-24 22:40:07,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 22:40:07,311 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2020-09-24 22:40:07,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:40:07,312 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:40:07,313 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:40:07,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 22:40:07,313 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:40:07,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:40:07,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1703786405, now seen corresponding path program 1 times [2020-09-24 22:40:07,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:40:07,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323659390] [2020-09-24 22:40:07,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:40:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:07,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:07,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:07,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:07,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:12,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:12,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 22:40:12,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:40:12,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 22:40:12,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:12,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:40:12,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 22:40:12,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 22:40:12,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:12,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:40:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:12,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:12,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:12,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:40:12,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:12,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:40:12,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:12,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:12,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:12,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:12,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:12,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:40:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:12,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:12,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:12,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:40:12,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:12,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-24 22:40:12,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:12,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 22:40:12,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:12,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 22:40:12,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:12,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:12,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:12,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:12,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:40:12,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:12,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 22:40:12,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:12,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:40:12,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:12,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 22:40:12,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:12,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:12,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:12,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:12,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:12,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:12,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:40:12,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:12,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:40:12,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:12,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:40:12,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:12,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:40:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:12,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:12,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:12,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:12,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:12,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:40:12,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:12,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:40:12,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:12,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:40:12,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:12,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:40:12,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:12,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:12,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:12,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:12,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:12,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 22:40:12,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:12,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:40:12,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:12,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:40:12,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:12,751 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-24 22:40:12,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323659390] [2020-09-24 22:40:12,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:40:12,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 22:40:12,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692349325] [2020-09-24 22:40:12,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 22:40:12,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:40:12,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 22:40:12,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:40:12,754 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 13 states. [2020-09-24 22:40:12,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:40:12,912 INFO L93 Difference]: Finished difference Result 85 states and 104 transitions. [2020-09-24 22:40:12,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 22:40:12,913 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-09-24 22:40:12,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:40:12,914 INFO L225 Difference]: With dead ends: 85 [2020-09-24 22:40:12,915 INFO L226 Difference]: Without dead ends: 79 [2020-09-24 22:40:12,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-09-24 22:40:12,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-24 22:40:12,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 66. [2020-09-24 22:40:12,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-24 22:40:12,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 83 transitions. [2020-09-24 22:40:12,926 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 83 transitions. Word has length 52 [2020-09-24 22:40:12,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:40:12,926 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 83 transitions. [2020-09-24 22:40:12,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 22:40:12,927 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 83 transitions. [2020-09-24 22:40:12,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 22:40:12,928 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:40:12,928 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:40:12,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 22:40:12,928 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:40:12,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:40:12,929 INFO L82 PathProgramCache]: Analyzing trace with hash -176890171, now seen corresponding path program 1 times [2020-09-24 22:40:12,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:40:12,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877441071] [2020-09-24 22:40:12,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:40:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:12,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:12,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:12,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:12,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:13,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:13,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:13,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:14,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:17,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:17,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 22:40:17,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 22:40:17,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 22:40:17,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:17,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:40:17,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 22:40:17,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 22:40:17,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:17,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:40:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:17,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:17,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:17,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:40:17,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:17,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:40:17,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:17,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:17,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:17,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:17,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:17,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:40:17,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:17,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:17,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:18,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:18,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:18,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:20,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:20,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 22:40:20,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:40:20,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2066 [2020-09-24 22:40:20,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:20,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:40:20,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 22:40:20,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:40:20,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:20,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:20,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:20,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:20,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:20,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 22:40:20,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:40:20,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 22:40:20,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:20,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:40:20,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:40:20,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:40:20,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:20,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:20,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:20,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:20,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:20,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:20,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 22:40:20,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:20,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:40:20,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:20,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:40:20,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:20,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:40:20,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:20,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:20,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:20,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:20,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:20,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:40:20,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:20,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:40:20,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:40:20,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:40:20,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:20,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-24 22:40:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:20,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:20,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:20,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:20,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:20,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:40:20,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:20,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:20,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 22:40:20,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:20,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:20,242 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 22:40:20,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877441071] [2020-09-24 22:40:20,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:40:20,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:40:20,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895641036] [2020-09-24 22:40:20,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:40:20,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:40:20,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:40:20,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:40:20,252 INFO L87 Difference]: Start difference. First operand 66 states and 83 transitions. Second operand 9 states. [2020-09-24 22:40:20,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:40:20,377 INFO L93 Difference]: Finished difference Result 132 states and 174 transitions. [2020-09-24 22:40:20,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:40:20,379 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-09-24 22:40:20,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:40:20,380 INFO L225 Difference]: With dead ends: 132 [2020-09-24 22:40:20,380 INFO L226 Difference]: Without dead ends: 72 [2020-09-24 22:40:20,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:40:20,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-24 22:40:20,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2020-09-24 22:40:20,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-24 22:40:20,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2020-09-24 22:40:20,396 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 82 transitions. Word has length 53 [2020-09-24 22:40:20,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:40:20,396 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 82 transitions. [2020-09-24 22:40:20,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:40:20,397 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 82 transitions. [2020-09-24 22:40:20,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 22:40:20,400 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:40:20,400 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:40:20,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 22:40:20,401 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:40:20,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:40:20,401 INFO L82 PathProgramCache]: Analyzing trace with hash 168275672, now seen corresponding path program 1 times [2020-09-24 22:40:20,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:40:20,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303681870] [2020-09-24 22:40:20,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:40:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:20,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:20,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:20,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:20,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:20,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:20,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:20,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:20,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:20,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:20,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:21,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:21,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:22,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:24,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:25,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:25,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-24 22:40:25,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-24 22:40:25,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 22:40:25,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:25,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:40:25,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-24 22:40:25,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:40:25,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:25,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:40:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:25,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:25,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:25,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:40:25,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:25,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:40:25,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:25,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:25,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:25,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:25,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:25,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:40:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:25,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:25,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:25,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:25,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:25,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:25,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:25,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:25,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:25,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:26,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:30,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:30,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 22:40:30,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 22:40:30,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 22:40:30,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:30,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:40:30,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 22:40:30,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 22:40:30,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:30,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:30,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:30,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:30,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:40:30,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:30,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:40:30,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:30,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:30,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:30,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:30,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:30,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:30,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:30,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:30,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:30,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:30,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:40:30,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:30,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:30,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:30,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:30,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:30,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:40:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:30,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:30,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:30,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:30,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:30,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:40:30,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:30,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:30,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:30,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:30,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:30,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:40:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:30,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:30,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:30,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:30,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:30,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:40:30,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:40:30,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-09-24 22:40:30,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:30,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:40:30,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:40:30,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:40:30,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:30,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:30,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:30,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:30,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:30,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:30,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:40:30,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:30,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:40:30,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:30,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:40:30,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:30,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:40:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:30,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:30,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:30,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:30,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:30,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:40:30,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:40:30,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-24 22:40:30,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:30,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:40:30,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:40:30,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:40:30,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:31,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:31,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:31,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:31,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:31,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:31,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:40:31,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 22:40:31,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:31,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:40:31,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:31,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:40:31,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:31,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:40:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:31,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:31,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:31,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:31,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:31,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:40:31,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:31,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:40:31,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:31,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:40:31,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:31,081 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 54 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-24 22:40:31,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303681870] [2020-09-24 22:40:31,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:40:31,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:40:31,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621087834] [2020-09-24 22:40:31,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:40:31,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:40:31,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:40:31,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:40:31,083 INFO L87 Difference]: Start difference. First operand 66 states and 82 transitions. Second operand 9 states. [2020-09-24 22:40:31,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:40:31,328 INFO L93 Difference]: Finished difference Result 130 states and 173 transitions. [2020-09-24 22:40:31,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 22:40:31,328 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-09-24 22:40:31,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:40:31,330 INFO L225 Difference]: With dead ends: 130 [2020-09-24 22:40:31,330 INFO L226 Difference]: Without dead ends: 68 [2020-09-24 22:40:31,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-09-24 22:40:31,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-24 22:40:31,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-24 22:40:31,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-24 22:40:31,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2020-09-24 22:40:31,338 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 87 [2020-09-24 22:40:31,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:40:31,338 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2020-09-24 22:40:31,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:40:31,339 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2020-09-24 22:40:31,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-24 22:40:31,340 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:40:31,340 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:40:31,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 22:40:31,340 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:40:31,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:40:31,341 INFO L82 PathProgramCache]: Analyzing trace with hash 589230722, now seen corresponding path program 2 times [2020-09-24 22:40:31,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:40:31,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524523351] [2020-09-24 22:40:31,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:40:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:31,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:31,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:31,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:31,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:31,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:31,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:32,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:32,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:32,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:32,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:33,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:33,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:33,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:33,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:33,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:33,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking...