/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_10-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:38:41,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:38:41,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:38:41,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:38:41,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:38:41,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:38:41,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:38:41,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:38:41,333 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:38:41,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:38:41,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:38:41,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:38:41,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:38:41,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:38:41,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:38:41,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:38:41,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:38:41,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:38:41,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:38:41,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:38:41,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:38:41,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:38:41,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:38:41,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:38:41,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:38:41,377 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:38:41,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:38:41,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:38:41,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:38:41,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:38:41,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:38:41,389 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:38:41,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:38:41,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:38:41,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:38:41,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:38:41,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:38:41,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:38:41,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:38:41,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:38:41,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:38:41,398 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 22:38:41,440 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:38:41,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:38:41,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:38:41,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:38:41,444 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:38:41,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:38:41,444 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:38:41,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:38:41,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:38:41,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:38:41,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:38:41,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:38:41,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:38:41,447 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:38:41,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:38:41,447 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:38:41,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:38:41,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:38:41,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:38:41,448 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:38:41,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:38:41,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:38:41,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:38:41,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:38:41,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:38:41,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:38:41,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:38:41,450 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:38:41,450 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:38:41,450 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 22:38:41,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:38:41,919 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:38:41,926 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:38:41,928 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:38:41,929 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:38:41,930 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_10-2.c [2020-09-24 22:38:42,023 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad91316ed/00165864580f46f4b99b98b8be8fa00b/FLAG0fb2ef17d [2020-09-24 22:38:42,600 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:38:42,601 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_10-2.c [2020-09-24 22:38:42,610 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad91316ed/00165864580f46f4b99b98b8be8fa00b/FLAG0fb2ef17d [2020-09-24 22:38:42,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad91316ed/00165864580f46f4b99b98b8be8fa00b [2020-09-24 22:38:42,961 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:38:42,967 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:38:42,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:38:42,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:38:42,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:38:42,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:38:42" (1/1) ... [2020-09-24 22:38:42,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a530f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:42, skipping insertion in model container [2020-09-24 22:38:42,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:38:42" (1/1) ... [2020-09-24 22:38:42,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:38:43,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:38:43,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:38:43,233 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:38:43,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:38:43,272 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:38:43,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:43 WrapperNode [2020-09-24 22:38:43,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:38:43,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:38:43,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:38:43,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:38:43,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:43" (1/1) ... [2020-09-24 22:38:43,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:43" (1/1) ... [2020-09-24 22:38:43,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:43" (1/1) ... [2020-09-24 22:38:43,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:43" (1/1) ... [2020-09-24 22:38:43,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:43" (1/1) ... [2020-09-24 22:38:43,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:43" (1/1) ... [2020-09-24 22:38:43,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:43" (1/1) ... [2020-09-24 22:38:43,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:38:43,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:38:43,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:38:43,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:38:43,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:43" (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 22:38:43,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:38:43,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:38:43,453 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-24 22:38:43,453 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:38:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:38:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:38:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-24 22:38:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:38:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:38:43,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:38:43,677 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:38:43,677 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 22:38:43,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:38:43 BoogieIcfgContainer [2020-09-24 22:38:43,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:38:43,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:38:43,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:38:43,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:38:43,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:38:42" (1/3) ... [2020-09-24 22:38:43,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31fae1e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:38:43, skipping insertion in model container [2020-09-24 22:38:43,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:43" (2/3) ... [2020-09-24 22:38:43,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31fae1e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:38:43, skipping insertion in model container [2020-09-24 22:38:43,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:38:43" (3/3) ... [2020-09-24 22:38:43,692 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_10-2.c [2020-09-24 22:38:43,704 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:38:43,715 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:38:43,738 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:38:43,765 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:38:43,765 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:38:43,765 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:38:43,765 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:38:43,766 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:38:43,766 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:38:43,766 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:38:43,766 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:38:43,786 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 22:38:43,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 22:38:43,794 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:43,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:38:43,796 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:43,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:43,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-24 22:38:43,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:43,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637788072] [2020-09-24 22:38:43,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:43,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:43,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:43,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:43,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:38:43,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:43,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 22:38:43,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:43,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:43,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:38:43,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:38:43,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:38:44,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:44,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:44,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:44,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:44,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:44,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:38:44,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:44,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:44,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:44,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:44,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:44,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:44,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:44,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:44,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:38:44,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:44,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 22:38:44,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:44,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:44,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:38:44,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:44,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:44,189 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 22:38:44,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637788072] [2020-09-24 22:38:44,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:38:44,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:38:44,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558607793] [2020-09-24 22:38:44,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:38:44,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:44,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:38:44,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:38:44,221 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 22:38:44,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:44,331 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 22:38:44,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:38:44,335 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 22:38:44,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:44,348 INFO L225 Difference]: With dead ends: 44 [2020-09-24 22:38:44,349 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 22:38:44,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:38:44,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 22:38:44,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 22:38:44,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 22:38:44,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 22:38:44,408 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 22:38:44,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:44,408 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 22:38:44,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:38:44,409 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 22:38:44,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 22:38:44,411 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:44,411 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 22:38:44,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:38:44,412 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:44,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:44,413 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-24 22:38:44,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:44,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530721873] [2020-09-24 22:38:44,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:44,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:44,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:44,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 22:38:44,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:44,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-24 22:38:44,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:44,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:44,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:38:44,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:44,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:38:44,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:44,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:44,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:44,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:44,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:44,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:38:44,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:44,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:44,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:44,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:44,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:44,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:44,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:44,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:44,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:44,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:44,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 22:38:44,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:44,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:44,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:38:44,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:38:44,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:44,660 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 22:38:44,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530721873] [2020-09-24 22:38:44,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:38:44,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:38:44,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800580452] [2020-09-24 22:38:44,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:38:44,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:44,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:38:44,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:38:44,665 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 22:38:44,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:44,732 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 22:38:44,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:38:44,733 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 22:38:44,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:44,735 INFO L225 Difference]: With dead ends: 36 [2020-09-24 22:38:44,735 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 22:38:44,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:38:44,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 22:38:44,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 22:38:44,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 22:38:44,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 22:38:44,745 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 22:38:44,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:44,746 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 22:38:44,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:38:44,746 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 22:38:44,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 22:38:44,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:44,748 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-24 22:38:44,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:38:44,749 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:44,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:44,749 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-24 22:38:44,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:44,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745777577] [2020-09-24 22:38:44,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:44,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:44,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:44,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:45,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:45,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 22:38:45,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:38:45,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 641 [2020-09-24 22:38:45,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:45,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:38:45,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 22:38:45,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:45,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:45,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:45,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:45,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:45,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:45,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:45,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:38:45,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:45,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:45,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:45,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:45,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:45,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:45,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:45,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:45,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 22:38:45,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:45,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 22:38:45,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:45,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:38:45,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:38:45,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:45,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:45,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:38:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:45,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:45,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:45,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:38:45,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:45,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:38:45,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:45,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:45,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:38:45,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:45,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:45,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:38:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:45,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:45,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:45,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:38:45,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:45,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:38:45,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:45,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:45,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 22:38:45,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:45,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:45,571 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 22:38:45,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745777577] [2020-09-24 22:38:45,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:38:45,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 22:38:45,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580976231] [2020-09-24 22:38:45,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:38:45,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:45,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:38:45,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:38:45,574 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-09-24 22:38:45,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:45,675 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2020-09-24 22:38:45,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:38:45,676 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-24 22:38:45,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:45,677 INFO L225 Difference]: With dead ends: 52 [2020-09-24 22:38:45,677 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 22:38:45,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:38:45,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 22:38:45,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-24 22:38:45,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 22:38:45,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-24 22:38:45,687 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 33 [2020-09-24 22:38:45,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:45,688 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-24 22:38:45,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:38:45,688 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-24 22:38:45,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 22:38:45,690 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:45,690 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-24 22:38:45,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:38:45,691 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:45,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:45,691 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-24 22:38:45,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:45,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235787680] [2020-09-24 22:38:45,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:45,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:45,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:46,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:46,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 22:38:46,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:38:46,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-09-24 22:38:46,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:46,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:38:46,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:38:46,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:38:46,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:46,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:46,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:46,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:46,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:46,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:46,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:38:46,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:46,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:46,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:46,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:46,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:46,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:46,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:46,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:46,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:46,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:38:46,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:38:46,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-09-24 22:38:46,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:46,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:38:46,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:38:46,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:38:46,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:46,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:38:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:46,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:46,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:46,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:46,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:46,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:38:46,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:46,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:38:46,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:46,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:38:46,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:46,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:38:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:46,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:46,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:46,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:38:46,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:46,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:38:46,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:46,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:38:46,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:46,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:38:46,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:46,543 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 22:38:46,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235787680] [2020-09-24 22:38:46,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:38:46,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 22:38:46,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790424097] [2020-09-24 22:38:46,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:38:46,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:46,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:38:46,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:38:46,547 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-09-24 22:38:46,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:46,648 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-09-24 22:38:46,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:38:46,649 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-24 22:38:46,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:46,651 INFO L225 Difference]: With dead ends: 42 [2020-09-24 22:38:46,651 INFO L226 Difference]: Without dead ends: 36 [2020-09-24 22:38:46,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:38:46,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-24 22:38:46,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-09-24 22:38:46,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-24 22:38:46,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-24 22:38:46,660 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 34 [2020-09-24 22:38:46,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:46,661 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-24 22:38:46,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:38:46,661 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-24 22:38:46,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 22:38:46,663 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:46,663 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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 22:38:46,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:38:46,664 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:46,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:46,664 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-24 22:38:46,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:46,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487359769] [2020-09-24 22:38:46,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:46,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:46,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:46,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:46,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:47,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:47,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 22:38:47,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:38:47,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 524 [2020-09-24 22:38:47,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:47,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:38:47,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:38:47,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:38:47,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:47,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:47,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:47,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:47,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:47,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:47,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:38:47,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:47,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:47,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:47,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:47,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:47,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:47,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:47,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:47,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:47,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 22:38:47,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:38:47,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-24 22:38:47,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:47,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:38:47,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:38:47,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:38:47,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:47,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:38:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:47,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:47,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:47,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:47,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:47,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 22:38:47,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:47,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:47,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:47,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:38:47,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:47,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:38:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:47,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:47,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:47,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:47,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:47,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:38:47,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 22:38:47,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:47,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:47,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:38:47,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:38:47,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:47,492 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 22:38:47,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487359769] [2020-09-24 22:38:47,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:38:47,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:38:47,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7171409] [2020-09-24 22:38:47,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:38:47,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:47,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:38:47,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:38:47,495 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2020-09-24 22:38:47,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:47,614 INFO L93 Difference]: Finished difference Result 78 states and 102 transitions. [2020-09-24 22:38:47,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:38:47,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-09-24 22:38:47,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:47,618 INFO L225 Difference]: With dead ends: 78 [2020-09-24 22:38:47,618 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 22:38:47,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:38:47,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 22:38:47,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2020-09-24 22:38:47,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 22:38:47,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2020-09-24 22:38:47,654 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 35 [2020-09-24 22:38:47,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:47,655 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2020-09-24 22:38:47,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:38:47,655 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2020-09-24 22:38:47,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:38:47,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:47,658 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 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] [2020-09-24 22:38:47,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:38:47,658 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:47,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:47,662 INFO L82 PathProgramCache]: Analyzing trace with hash -154171110, now seen corresponding path program 2 times [2020-09-24 22:38:47,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:47,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104576604] [2020-09-24 22:38:47,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:47,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:47,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:47,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:48,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:48,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:48,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:51,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:51,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 22:38:51,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:38:51,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3744 [2020-09-24 22:38:51,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:51,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:38:51,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:38:51,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:38:51,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:51,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:51,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:51,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:51,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:51,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:51,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:38:51,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:51,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:51,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:51,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:51,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:51,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:51,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:51,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:51,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:51,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:51,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:38:51,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:38:51,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-09-24 22:38:51,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:51,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:38:51,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:38:51,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:38:51,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:51,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:38:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:51,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:51,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:51,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:51,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:51,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 22:38:51,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:51,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:51,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:51,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:38:51,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:51,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:38:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:51,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:51,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:51,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:51,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:51,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:38:51,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:38:51,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-24 22:38:51,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:51,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:38:51,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:38:51,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:38:51,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:51,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:38:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:52,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:52,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:52,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:38:52,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 22:38:52,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:52,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:38:52,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:52,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:38:52,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:52,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:38:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:52,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:52,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:38:52,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:52,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:38:52,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:52,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:38:52,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:52,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:52,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:52,086 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 23 proven. 18 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 22:38:52,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104576604] [2020-09-24 22:38:52,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:38:52,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 22:38:52,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539779144] [2020-09-24 22:38:52,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 22:38:52,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:52,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 22:38:52,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:38:52,093 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 8 states. [2020-09-24 22:38:52,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:52,321 INFO L93 Difference]: Finished difference Result 78 states and 103 transitions. [2020-09-24 22:38:52,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:38:52,322 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-09-24 22:38:52,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:52,326 INFO L225 Difference]: With dead ends: 78 [2020-09-24 22:38:52,327 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 22:38:52,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-24 22:38:52,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 22:38:52,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-24 22:38:52,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-24 22:38:52,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-24 22:38:52,346 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 52 [2020-09-24 22:38:52,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:52,347 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-24 22:38:52,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 22:38:52,347 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-24 22:38:52,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:38:52,356 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:52,356 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 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] [2020-09-24 22:38:52,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:38:52,357 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:52,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:52,357 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 3 times [2020-09-24 22:38:52,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:52,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973501307] [2020-09-24 22:38:52,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:52,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:54,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:54,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 22:38:54,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:38:54,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1730 [2020-09-24 22:38:54,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:54,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:38:54,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:38:54,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 22:38:54,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:54,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:54,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:54,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:54,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:54,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:54,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:38:54,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:54,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:54,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:54,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:54,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:54,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:54,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:54,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:54,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:55,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:55,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:38:55,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:38:55,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1745 [2020-09-24 22:38:55,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:55,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:38:55,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:38:55,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 22:38:55,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:55,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:38:55,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:55,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:55,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:55,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:38:55,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:55,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 22:38:55,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:55,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:38:55,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:55,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:38:55,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:55,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:38:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:55,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:55,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:55,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:55,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:55,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:38:55,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:55,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:55,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:55,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:55,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:55,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:38:55,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:55,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:55,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:55,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:38:55,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:55,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:38:55,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:55,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:55,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:55,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:55,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:55,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:38:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:55,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:55,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:55,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:55,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:55,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 22:38:55,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:55,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:38:55,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:55,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:38:55,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:56,036 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-24 22:38:56,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973501307] [2020-09-24 22:38:56,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:38:56,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 22:38:56,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905363439] [2020-09-24 22:38:56,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:38:56,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:56,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:38:56,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:38:56,039 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2020-09-24 22:38:56,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:56,160 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-09-24 22:38:56,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:38:56,161 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-24 22:38:56,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:56,163 INFO L225 Difference]: With dead ends: 52 [2020-09-24 22:38:56,163 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 22:38:56,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:38:56,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 22:38:56,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-24 22:38:56,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-24 22:38:56,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-24 22:38:56,171 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 52 [2020-09-24 22:38:56,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:56,172 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-24 22:38:56,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:38:56,172 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-24 22:38:56,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 22:38:56,174 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:56,174 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:38:56,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 22:38:56,175 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:56,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:56,175 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 4 times [2020-09-24 22:38:56,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:56,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481394042] [2020-09-24 22:38:56,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:56,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:56,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:59,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:59,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:01,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:01,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-24 22:39:01,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 22:39:01,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 22:39:01,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:01,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:39:01,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:39:01,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 22:39:01,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:01,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:01,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:01,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:01,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:01,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:01,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:01,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:01,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:01,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:01,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:01,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:01,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:01,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:01,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:01,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:01,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:01,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:01,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:01,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:01,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:04,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:04,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:06,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:06,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 22:39:06,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 22:39:06,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 22:39:06,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:06,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:39:06,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:06,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 22:39:06,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:06,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:06,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:06,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:06,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:06,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:06,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:06,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-24 22:39:06,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:06,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:06,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:06,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 22:39:06,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:06,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:06,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:06,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:06,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:06,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:06,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:39:06,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:06,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:06,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:06,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:06,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:06,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:06,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:06,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:06,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:06,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:06,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:39:06,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:06,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:06,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:06,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:06,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:06,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:06,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:06,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:06,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:06,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:06,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:06,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:09,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:09,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:39:09,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:39:09,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3090 [2020-09-24 22:39:09,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:09,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:09,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:09,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 22:39:09,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:09,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:09,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:09,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:09,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:09,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:09,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 22:39:09,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:09,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:09,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:09,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:09,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:09,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:09,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:09,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:09,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:09,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:09,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:39:09,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:09,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:09,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:09,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:09,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:09,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:09,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:09,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:09,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:09,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:09,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:09,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:09,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:09,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:09,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:09,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:09,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:09,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:09,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:09,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:09,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:09,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 22:39:09,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:09,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:09,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:09,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:09,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:09,802 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 82 proven. 62 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-24 22:39:09,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481394042] [2020-09-24 22:39:09,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:09,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 22:39:09,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070126252] [2020-09-24 22:39:09,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 22:39:09,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:09,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 22:39:09,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:39:09,807 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 10 states. [2020-09-24 22:39:10,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:10,065 INFO L93 Difference]: Finished difference Result 106 states and 152 transitions. [2020-09-24 22:39:10,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 22:39:10,066 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-09-24 22:39:10,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:10,068 INFO L225 Difference]: With dead ends: 106 [2020-09-24 22:39:10,068 INFO L226 Difference]: Without dead ends: 72 [2020-09-24 22:39:10,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-24 22:39:10,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-24 22:39:10,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 64. [2020-09-24 22:39:10,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-24 22:39:10,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 85 transitions. [2020-09-24 22:39:10,081 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 85 transitions. Word has length 87 [2020-09-24 22:39:10,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:10,082 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 85 transitions. [2020-09-24 22:39:10,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 22:39:10,082 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 85 transitions. [2020-09-24 22:39:10,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 22:39:10,083 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:10,083 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:10,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 22:39:10,084 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:10,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:10,084 INFO L82 PathProgramCache]: Analyzing trace with hash -758395752, now seen corresponding path program 5 times [2020-09-24 22:39:10,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:10,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870545519] [2020-09-24 22:39:10,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:10,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:10,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:10,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:10,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:10,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:10,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:10,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:10,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:11,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:12,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:12,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:14,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:14,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:14,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:15,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 22:39:15,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 22:39:15,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 22:39:15,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:15,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:39:15,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:39:15,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 22:39:15,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:15,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:15,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:15,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:15,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:15,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:15,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:15,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:15,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:15,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:15,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:15,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:15,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:20,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:20,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 22:39:20,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:39:20,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 22:39:20,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:20,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:39:20,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:20,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 22:39:20,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:20,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:20,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:20,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:20,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:20,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:20,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:20,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-24 22:39:20,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:20,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:20,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:20,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 22:39:20,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:20,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:20,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:20,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:20,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:20,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:20,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:39:20,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:20,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:20,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:20,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:20,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:20,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:20,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:20,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:20,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:20,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:20,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:39:20,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:20,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:20,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:20,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:20,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:20,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:20,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:20,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:20,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:20,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:20,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:20,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:20,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-24 22:39:20,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:20,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:20,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:20,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:20,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:20,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:20,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:20,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:20,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:20,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:20,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 22:39:20,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:20,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:20,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:20,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:20,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:20,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:20,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:20,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:20,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:20,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:20,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:39:20,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:20,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:20,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:20,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:20,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:20,725 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 52 proven. 37 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-24 22:39:20,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870545519] [2020-09-24 22:39:20,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:20,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 22:39:20,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142634255] [2020-09-24 22:39:20,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 22:39:20,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:20,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 22:39:20,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:39:20,733 INFO L87 Difference]: Start difference. First operand 64 states and 85 transitions. Second operand 10 states. [2020-09-24 22:39:20,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:20,924 INFO L93 Difference]: Finished difference Result 114 states and 158 transitions. [2020-09-24 22:39:20,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 22:39:20,925 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-09-24 22:39:20,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:20,926 INFO L225 Difference]: With dead ends: 114 [2020-09-24 22:39:20,926 INFO L226 Difference]: Without dead ends: 53 [2020-09-24 22:39:20,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-09-24 22:39:20,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-24 22:39:20,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-24 22:39:20,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 22:39:20,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2020-09-24 22:39:20,934 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 69 [2020-09-24 22:39:20,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:20,934 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2020-09-24 22:39:20,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 22:39:20,934 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2020-09-24 22:39:20,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-24 22:39:20,935 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:20,936 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:20,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 22:39:20,936 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:20,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:20,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 6 times [2020-09-24 22:39:20,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:20,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996812869] [2020-09-24 22:39:20,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:20,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:20,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:22,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:22,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:23,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:25,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:25,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-24 22:39:25,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 22:39:25,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 22:39:25,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:25,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 22:39:25,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:39:25,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 22:39:25,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:25,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:25,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:25,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:25,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:25,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:25,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:25,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:25,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:25,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:25,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:25,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:25,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:26,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:26,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:26,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:26,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:26,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:26,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:28,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:30,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:30,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:30,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 22:39:30,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-24 22:39:30,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 22:39:30,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:30,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:30,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-24 22:39:30,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 22:39:30,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:31,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:31,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:31,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:31,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:39:31,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:31,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:39:31,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:31,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:31,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:31,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:31,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:31,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:31,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:31,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:31,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:31,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:31,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:39:31,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:31,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:31,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:31,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:31,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:31,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:31,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:31,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:31,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:31,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:31,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:39:31,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:31,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:31,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:31,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:31,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:31,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:31,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:31,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:31,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:31,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:31,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:31,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:31,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:31,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:31,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:31,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:31,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:31,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:31,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:31,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:31,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:31,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:31,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:31,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:31,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:31,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:31,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:31,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 22:39:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:31,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:31,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:31,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:31,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:31,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:34,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:34,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 22:39:34,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:39:34,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2962 [2020-09-24 22:39:34,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:34,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:34,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:34,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 22:39:34,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:34,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:34,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:34,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:34,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:34,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:34,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:35,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:35,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:39:35,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:39:35,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1207 [2020-09-24 22:39:35,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:35,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:35,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:35,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 22:39:35,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:35,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:35,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:35,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:35,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:35,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:35,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 22:39:35,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:35,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:35,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:35,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:35,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:35,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:35,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:35,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:35,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:35,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:35,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:35,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:35,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:35,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:35,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:35,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:35,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:35,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:35,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:35,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:35,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:35,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:35,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:35,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:35,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:35,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:35,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:35,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:35,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:35,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:35,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:35,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:35,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:35,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 22:39:35,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:35,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:35,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:35,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:35,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:35,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 22:39:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:35,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:35,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:35,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:35,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:35,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:39:35,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:35,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:35,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:35,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:35,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:35,417 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 215 proven. 12 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2020-09-24 22:39:35,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996812869] [2020-09-24 22:39:35,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:35,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 22:39:35,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228766667] [2020-09-24 22:39:35,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:39:35,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:35,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:39:35,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:39:35,420 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand 7 states. [2020-09-24 22:39:35,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:35,545 INFO L93 Difference]: Finished difference Result 106 states and 129 transitions. [2020-09-24 22:39:35,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 22:39:35,551 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-09-24 22:39:35,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:35,552 INFO L225 Difference]: With dead ends: 106 [2020-09-24 22:39:35,552 INFO L226 Difference]: Without dead ends: 59 [2020-09-24 22:39:35,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:39:35,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-24 22:39:35,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2020-09-24 22:39:35,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 22:39:35,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2020-09-24 22:39:35,564 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 123 [2020-09-24 22:39:35,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:35,564 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2020-09-24 22:39:35,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:39:35,565 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2020-09-24 22:39:35,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-24 22:39:35,565 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:35,566 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:35,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 22:39:35,566 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:35,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:35,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1885389560, now seen corresponding path program 7 times [2020-09-24 22:39:35,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:35,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100586009] [2020-09-24 22:39:35,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:35,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:35,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:35,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:35,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:35,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking...