/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=NARROWEST --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_5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:02:31,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:02:31,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:02:31,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:02:31,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:02:31,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:02:31,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:02:31,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:02:31,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:02:31,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:02:31,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:02:31,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:02:31,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:02:31,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:02:31,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:02:31,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:02:31,411 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:02:31,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:02:31,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:02:31,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:02:31,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:02:31,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:02:31,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:02:31,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:02:31,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:02:31,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:02:31,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:02:31,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:02:31,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:02:31,442 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:02:31,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:02:31,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:02:31,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:02:31,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:02:31,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:02:31,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:02:31,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:02:31,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:02:31,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:02:31,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:02:31,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:02:31,451 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 02:02:31,506 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:02:31,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:02:31,507 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:02:31,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:02:31,510 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:02:31,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:02:31,510 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:02:31,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:02:31,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:02:31,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:02:31,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:02:31,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:02:31,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:02:31,512 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:02:31,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:02:31,513 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:02:31,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:02:31,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:02:31,514 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:02:31,514 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:02:31,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:02:31,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:02:31,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:02:31,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:02:31,515 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:02:31,515 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:02:31,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:02:31,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:02:31,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:02:31,516 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:02:31,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:02:32,009 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:02:32,014 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:02:32,016 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:02:32,016 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:02:32,017 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_5-1.c [2020-09-25 02:02:32,089 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4224d6359/8c7b17e96f404dda8514ae78d9b27b71/FLAG1b994d4e2 [2020-09-25 02:02:32,649 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:02:32,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_5-1.c [2020-09-25 02:02:32,658 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4224d6359/8c7b17e96f404dda8514ae78d9b27b71/FLAG1b994d4e2 [2020-09-25 02:02:33,017 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4224d6359/8c7b17e96f404dda8514ae78d9b27b71 [2020-09-25 02:02:33,032 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:02:33,039 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:02:33,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:02:33,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:02:33,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:02:33,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:02:33" (1/1) ... [2020-09-25 02:02:33,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a018b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:33, skipping insertion in model container [2020-09-25 02:02:33,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:02:33" (1/1) ... [2020-09-25 02:02:33,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:02:33,087 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:02:33,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:02:33,298 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:02:33,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:02:33,337 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:02:33,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:33 WrapperNode [2020-09-25 02:02:33,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:02:33,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:02:33,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:02:33,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:02:33,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:33" (1/1) ... [2020-09-25 02:02:33,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:33" (1/1) ... [2020-09-25 02:02:33,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:33" (1/1) ... [2020-09-25 02:02:33,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:33" (1/1) ... [2020-09-25 02:02:33,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:33" (1/1) ... [2020-09-25 02:02:33,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:33" (1/1) ... [2020-09-25 02:02:33,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:33" (1/1) ... [2020-09-25 02:02:33,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:02:33,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:02:33,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:02:33,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:02:33,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:02:33,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:02:33,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:02:33,549 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 02:02:33,549 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:02:33,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:02:33,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:02:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 02:02:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:02:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:02:33,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:02:33,770 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:02:33,770 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 02:02:33,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:02:33 BoogieIcfgContainer [2020-09-25 02:02:33,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:02:33,779 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:02:33,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:02:33,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:02:33,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:02:33" (1/3) ... [2020-09-25 02:02:33,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16663208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:02:33, skipping insertion in model container [2020-09-25 02:02:33,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:33" (2/3) ... [2020-09-25 02:02:33,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16663208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:02:33, skipping insertion in model container [2020-09-25 02:02:33,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:02:33" (3/3) ... [2020-09-25 02:02:33,788 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_5-1.c [2020-09-25 02:02:33,804 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:02:33,814 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:02:33,847 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:02:33,885 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:02:33,885 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:02:33,886 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:02:33,886 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:02:33,886 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:02:33,886 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:02:33,887 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:02:33,887 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:02:33,913 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 02:02:33,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 02:02:33,923 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:33,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:02:33,925 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:33,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:33,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 02:02:33,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:33,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414216702] [2020-09-25 02:02:33,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:34,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:34,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:34,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:34,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 02:02:34,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:34,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 02:02:34,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:34,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:02:34,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:02:34,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:02:34,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:02:34,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:02:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:34,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:34,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:34,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:02:34,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:34,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:02:34,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:34,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:34,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:34,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:34,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:34,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:02:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:34,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:34,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:34,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:34,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:34,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 02:02:34,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:34,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:02:34,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:02:34,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:34,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:34,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:02:34,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414216702] [2020-09-25 02:02:34,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:02:34,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:02:34,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842898076] [2020-09-25 02:02:34,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:02:34,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:02:34,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:02:34,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:02:34,287 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 02:02:34,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:02:34,421 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 02:02:34,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:02:34,424 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 02:02:34,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:02:34,437 INFO L225 Difference]: With dead ends: 44 [2020-09-25 02:02:34,437 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 02:02:34,442 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 [2020-09-25 02:02:34,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 02:02:34,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 02:02:34,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 02:02:34,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 02:02:34,499 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 02:02:34,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:02:34,499 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 02:02:34,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:02:34,500 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 02:02:34,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 02:02:34,502 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:34,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:02:34,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:02:34,503 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:34,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:34,504 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 02:02:34,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:34,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86837431] [2020-09-25 02:02:34,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:34,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:34,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:34,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 02:02:34,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:34,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 02:02:34,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:34,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:02:34,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:02:34,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:34,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:34,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:02:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:34,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:34,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:34,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:02:34,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:34,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:02:34,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:34,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:34,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:34,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:34,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:34,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:02:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:34,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:34,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:34,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:34,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:34,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 02:02:34,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:34,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:02:34,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:02:34,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:02:34,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:34,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:02:34,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86837431] [2020-09-25 02:02:34,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:02:34,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:02:34,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308637542] [2020-09-25 02:02:34,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:02:34,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:02:34,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:02:34,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:02:34,842 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 02:02:34,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:02:34,935 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 02:02:34,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:02:34,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 02:02:34,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:02:34,938 INFO L225 Difference]: With dead ends: 36 [2020-09-25 02:02:34,938 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 02:02:34,939 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 [2020-09-25 02:02:34,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 02:02:34,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 02:02:34,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 02:02:34,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 02:02:34,949 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 02:02:34,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:02:34,949 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 02:02:34,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:02:34,950 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 02:02:34,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 02:02:34,951 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:34,952 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] [2020-09-25 02:02:34,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:02:34,952 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:34,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:34,953 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 02:02:34,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:34,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829648765] [2020-09-25 02:02:34,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:34,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:35,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:35,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:35,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:35,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 02:02:35,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:02:35,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 634 [2020-09-25 02:02:35,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:35,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:02:35,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 02:02:35,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:35,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:02:35,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:02:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:35,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:35,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:35,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:02:35,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:35,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:02:35,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:35,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:35,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:35,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:35,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:35,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:02:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:35,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:35,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:35,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 02:02:35,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:35,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 02:02:35,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:35,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:02:35,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 02:02:35,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:35,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:35,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:35,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:35,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:35,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:35,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:35,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:02:35,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:35,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:02:35,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:02:35,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:35,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:35,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 02:02:35,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:35,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:35,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:35,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:35,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:35,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:02:35,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:35,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:35,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:02:35,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:35,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:35,826 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 02:02:35,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829648765] [2020-09-25 02:02:35,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:02:35,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 02:02:35,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690707090] [2020-09-25 02:02:35,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:02:35,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:02:35,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:02:35,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:02:35,838 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-09-25 02:02:35,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:02:35,959 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2020-09-25 02:02:35,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:02:35,960 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-25 02:02:35,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:02:35,962 INFO L225 Difference]: With dead ends: 52 [2020-09-25 02:02:35,962 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 02:02:35,963 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 [2020-09-25 02:02:35,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 02:02:35,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 02:02:35,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 02:02:35,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 02:02:35,980 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 33 [2020-09-25 02:02:35,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:02:35,980 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 02:02:35,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:02:35,983 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 02:02:35,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 02:02:35,985 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:35,985 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] [2020-09-25 02:02:35,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:02:35,986 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:35,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:35,986 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-25 02:02:35,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:35,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497166682] [2020-09-25 02:02:35,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:36,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:36,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:36,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:36,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 02:02:36,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:02:36,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-09-25 02:02:36,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:36,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:02:36,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:02:36,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 02:02:36,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:36,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:02:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:36,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:36,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:36,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:02:36,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:36,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:02:36,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:36,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:36,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:36,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:36,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:36,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:02:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:36,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:36,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:36,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:36,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:02:36,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:02:36,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-09-25 02:02:36,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:36,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:02:36,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:02:36,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:02:36,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:36,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:36,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:36,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:36,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:36,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:36,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:02:36,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:36,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:02:36,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:36,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:02:36,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:36,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:02:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:36,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:36,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:36,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:36,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:36,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:02:36,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:36,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:02:36,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:36,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:02:36,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:36,939 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 02:02:36,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497166682] [2020-09-25 02:02:36,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:02:36,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:02:36,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632491610] [2020-09-25 02:02:36,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:02:36,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:02:36,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:02:36,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:02:36,947 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-09-25 02:02:37,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:02:37,053 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-09-25 02:02:37,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:02:37,054 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-25 02:02:37,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:02:37,056 INFO L225 Difference]: With dead ends: 42 [2020-09-25 02:02:37,056 INFO L226 Difference]: Without dead ends: 36 [2020-09-25 02:02:37,059 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 [2020-09-25 02:02:37,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-25 02:02:37,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-09-25 02:02:37,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 02:02:37,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-25 02:02:37,075 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 34 [2020-09-25 02:02:37,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:02:37,077 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-25 02:02:37,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:02:37,077 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-25 02:02:37,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 02:02:37,079 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:37,079 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] [2020-09-25 02:02:37,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:02:37,080 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:37,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:37,080 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 02:02:37,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:37,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644218753] [2020-09-25 02:02:37,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:37,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:37,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:37,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:37,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:37,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:37,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 02:02:37,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:02:37,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 514 [2020-09-25 02:02:37,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:37,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:02:37,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:02:37,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 02:02:37,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:37,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:02:37,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:37,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:37,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:37,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:02:37,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:37,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:02:37,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:37,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:37,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:37,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:37,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:37,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:02:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:37,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:37,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:37,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:37,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:38,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:38,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:02:38,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:02:38,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 525 [2020-09-25 02:02:38,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:38,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:02:38,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:02:38,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:02:38,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:38,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:38,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:38,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:38,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:38,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:38,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:38,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 02:02:38,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:38,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:02:38,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:38,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:02:38,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:38,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:02:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:38,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:38,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:38,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:38,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:38,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:02:38,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 02:02:38,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:38,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:02:38,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:02:38,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:02:38,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:38,301 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 02:02:38,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644218753] [2020-09-25 02:02:38,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:02:38,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 02:02:38,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211726408] [2020-09-25 02:02:38,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:02:38,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:02:38,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:02:38,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:02:38,305 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 8 states. [2020-09-25 02:02:38,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:02:38,498 INFO L93 Difference]: Finished difference Result 75 states and 95 transitions. [2020-09-25 02:02:38,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:02:38,501 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-09-25 02:02:38,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:02:38,502 INFO L225 Difference]: With dead ends: 75 [2020-09-25 02:02:38,503 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 02:02:38,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:02:38,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 02:02:38,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-25 02:02:38,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 02:02:38,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 02:02:38,528 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 35 [2020-09-25 02:02:38,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:02:38,529 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 02:02:38,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:02:38,529 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 02:02:38,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 02:02:38,537 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:38,537 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] [2020-09-25 02:02:38,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:02:38,538 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:38,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:38,538 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 2 times [2020-09-25 02:02:38,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:38,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726452665] [2020-09-25 02:02:38,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:38,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:38,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:38,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:40,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:40,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 02:02:40,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:02:40,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2112 [2020-09-25 02:02:40,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:40,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:02:40,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:02:40,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 02:02:40,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:40,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:02:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:40,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:40,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:40,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:02:40,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:40,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:02:40,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:40,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:40,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:40,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:40,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:40,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:02:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:40,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:40,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:40,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:42,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:42,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:02:42,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:02:42,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1938 [2020-09-25 02:02:42,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:42,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:02:42,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:02:42,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:02:42,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:42,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:42,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:42,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:42,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:02:42,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:42,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 02:02:42,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:42,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:02:42,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:42,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:02:42,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:42,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:42,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:42,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:42,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:42,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:42,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:02:42,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:42,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:42,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:42,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:42,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:42,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:02:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:42,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:42,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:42,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:42,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:42,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:02:42,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:42,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:42,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:42,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:42,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:42,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:02:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:42,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:42,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:42,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:42,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:42,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 02:02:42,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:42,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:02:42,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:42,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:02:42,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:42,788 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 02:02:42,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726452665] [2020-09-25 02:02:42,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:02:42,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:02:42,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657201400] [2020-09-25 02:02:42,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:02:42,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:02:42,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:02:42,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:02:42,791 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2020-09-25 02:02:42,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:02:42,931 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-09-25 02:02:42,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:02:42,932 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-25 02:02:42,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:02:42,934 INFO L225 Difference]: With dead ends: 52 [2020-09-25 02:02:42,934 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 02:02:42,935 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 [2020-09-25 02:02:42,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 02:02:42,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-25 02:02:42,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 02:02:42,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 02:02:42,943 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 52 [2020-09-25 02:02:42,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:02:42,944 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 02:02:42,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:02:42,944 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 02:02:42,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 02:02:42,945 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:42,946 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] [2020-09-25 02:02:42,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:02:42,946 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:42,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:42,947 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 3 times [2020-09-25 02:02:42,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:42,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781320648] [2020-09-25 02:02:42,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:42,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:42,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:42,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:43,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:43,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:43,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:43,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:43,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:43,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:46,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:46,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:47,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:47,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 02:02:47,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 02:02:47,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 02:02:47,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:47,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:02:47,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:02:47,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 02:02:47,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:47,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:02:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:47,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:47,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:47,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:02:47,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:47,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:02:47,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:47,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:47,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:47,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:47,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:47,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:02:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:48,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:48,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:48,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:48,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:48,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:48,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:48,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:48,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:48,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:49,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:52,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:53,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 02:02:53,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 02:02:53,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 02:02:53,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:53,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:02:53,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:02:53,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 02:02:53,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:53,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:53,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:53,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:53,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:53,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:53,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:02:53,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:02:53,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-09-25 02:02:53,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:53,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:02:53,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:53,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:02:53,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:53,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:53,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:53,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:53,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:53,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:53,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 02:02:53,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:53,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:02:53,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:53,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:02:53,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:53,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:02:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:53,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:53,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:53,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:53,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:53,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:02:53,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:53,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:02:53,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:53,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:53,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:53,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:02:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:53,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:53,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:53,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:53,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:53,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:53,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:54,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:54,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:02:54,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:02:54,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1517 [2020-09-25 02:02:54,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:54,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:02:54,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:02:54,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:02:54,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:55,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:55,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:55,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:55,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:55,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:55,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:02:55,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:02:55,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-25 02:02:55,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:55,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:02:55,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:55,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:02:55,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:55,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:55,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:55,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:55,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:55,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:55,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:02:55,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:55,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:02:55,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:55,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:02:55,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:55,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:02:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:55,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:55,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:55,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:55,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:55,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:02:55,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:55,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:02:55,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:55,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:55,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:55,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:02:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:55,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:55,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:55,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:55,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:55,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:02:55,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:55,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:02:55,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:55,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:02:55,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:55,397 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 65 proven. 76 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-09-25 02:02:55,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781320648] [2020-09-25 02:02:55,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:02:55,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 02:02:55,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983479142] [2020-09-25 02:02:55,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 02:02:55,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:02:55,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 02:02:55,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:02:55,400 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 11 states. [2020-09-25 02:02:55,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:02:55,730 INFO L93 Difference]: Finished difference Result 98 states and 133 transitions. [2020-09-25 02:02:55,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 02:02:55,731 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2020-09-25 02:02:55,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:02:55,732 INFO L225 Difference]: With dead ends: 98 [2020-09-25 02:02:55,732 INFO L226 Difference]: Without dead ends: 64 [2020-09-25 02:02:55,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-09-25 02:02:55,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-25 02:02:55,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2020-09-25 02:02:55,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 02:02:55,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2020-09-25 02:02:55,759 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 87 [2020-09-25 02:02:55,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:02:55,760 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2020-09-25 02:02:55,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 02:02:55,760 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2020-09-25 02:02:55,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 02:02:55,764 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:55,765 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] [2020-09-25 02:02:55,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:02:55,765 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:55,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:55,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 4 times [2020-09-25 02:02:55,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:55,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191592051] [2020-09-25 02:02:55,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:55,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:55,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:55,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:55,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:56,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:56,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:56,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:56,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:56,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:57,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:57,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:00,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:00,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 02:03:00,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 02:03:00,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 02:03:00,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:00,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:03:00,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:03:00,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 02:03:00,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:00,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:00,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:00,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:00,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:00,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:00,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:03:00,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:00,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:00,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:00,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:00,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:00,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:03:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:00,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:00,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:00,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:01,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:01,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:01,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:01,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:01,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:01,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:02,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:02,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:02,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:02,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:02,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:02,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:03,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:04,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:04,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:05,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:05,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 02:03:05,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 02:03:05,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 02:03:05,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:05,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 02:03:05,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:03:05,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 02:03:05,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:05,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:05,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:05,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:05,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:05,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:06,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:06,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:10,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:10,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:03:10,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:03:10,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 02:03:10,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:10,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:03:10,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:10,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 02:03:10,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:10,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:10,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:10,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:10,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:11,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:11,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:03:11,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:03:11,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-09-25 02:03:11,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:11,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:03:11,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:11,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:03:11,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:11,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:11,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:11,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:11,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:11,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:11,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 02:03:11,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:11,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:11,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:11,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:03:11,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:11,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:03:11,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:11,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:11,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:11,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:11,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:11,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:03:11,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:11,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:03:11,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:11,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:03:11,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:11,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:03:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:11,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:11,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:11,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:11,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:11,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:03:11,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:11,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:03:11,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:11,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:11,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:11,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 02:03:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:11,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:11,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:11,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:11,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:11,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:12,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:12,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:12,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:12,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:13,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:13,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:13,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:13,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:16,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:16,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 02:03:16,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 02:03:16,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 02:03:16,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:16,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:03:16,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:03:16,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 02:03:16,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:16,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:16,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:16,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:16,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:16,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:16,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:16,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:16,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:20,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:03:20,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:03:20,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3619 [2020-09-25 02:03:20,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:20,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:03:20,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:20,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 02:03:20,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:20,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:20,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:20,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:20,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:03:20,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:03:20,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-09-25 02:03:20,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:20,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:03:20,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:20,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:03:20,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:20,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:20,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:20,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:20,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:03:20,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 02:03:20,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:20,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:20,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:20,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:03:20,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:20,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:03:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:20,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:20,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:20,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:20,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:03:20,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:20,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:03:20,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:20,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:03:20,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:20,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:03:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:20,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:20,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:20,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:20,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:03:20,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:20,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:03:20,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:20,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:20,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:20,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 02:03:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:20,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:20,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:20,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:20,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:03:20,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:20,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:03:20,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:03:20,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:20,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:20,400 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 172 proven. 164 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-09-25 02:03:20,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191592051] [2020-09-25 02:03:20,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:03:20,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 02:03:20,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052872739] [2020-09-25 02:03:20,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 02:03:20,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:20,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 02:03:20,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-09-25 02:03:20,403 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand 13 states. [2020-09-25 02:03:20,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:20,835 INFO L93 Difference]: Finished difference Result 121 states and 163 transitions. [2020-09-25 02:03:20,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 02:03:20,836 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 123 [2020-09-25 02:03:20,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:20,837 INFO L225 Difference]: With dead ends: 121 [2020-09-25 02:03:20,839 INFO L226 Difference]: Without dead ends: 76 [2020-09-25 02:03:20,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2020-09-25 02:03:20,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-25 02:03:20,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2020-09-25 02:03:20,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 02:03:20,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 80 transitions. [2020-09-25 02:03:20,856 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 80 transitions. Word has length 123 [2020-09-25 02:03:20,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:20,856 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 80 transitions. [2020-09-25 02:03:20,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 02:03:20,856 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 80 transitions. [2020-09-25 02:03:20,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 02:03:20,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:20,859 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:03:20,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 02:03:20,859 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:20,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:20,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1618484333, now seen corresponding path program 5 times [2020-09-25 02:03:20,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:20,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328050366] [2020-09-25 02:03:20,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:20,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:22,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:22,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 02:03:22,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:22,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1187 [2020-09-25 02:03:22,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:22,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-25 02:03:22,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 02:03:22,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 02:03:22,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:22,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:22,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:22,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:22,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:22,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:22,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:03:22,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:22,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:22,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:22,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:22,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:22,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:03:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:22,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:23,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:23,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 02:03:23,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:23,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1035 [2020-09-25 02:03:23,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:23,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-25 02:03:23,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:23,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-09-25 02:03:23,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:23,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:23,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:23,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:23,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 02:03:23,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:23,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-09-25 02:03:23,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:23,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:03:23,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:23,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 02:03:23,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:23,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:23,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:23,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:23,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:03:23,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:23,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 02:03:23,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:23,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:03:23,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:23,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 02:03:23,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:23,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:23,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:23,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:23,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:03:23,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:23,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 02:03:23,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:23,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:03:23,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:23,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 02:03:23,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:24,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:24,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:24,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:24,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:24,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:24,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:03:24,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:24,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:03:24,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:24,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:03:24,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:24,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:03:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:24,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:24,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:24,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:24,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:24,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:03:24,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:24,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:03:24,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:24,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:03:24,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:24,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:03:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:24,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:24,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:24,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:24,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:24,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 02:03:24,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:24,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:03:24,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:24,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:24,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:24,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 02:03:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:24,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:24,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:24,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:03:24,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:24,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 02:03:24,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:24,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:03:24,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:24,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:03:24,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:24,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:24,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:24,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:24,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:24,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:24,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:03:24,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:24,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:03:24,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:24,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:03:24,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:24,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:03:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:24,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:24,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:24,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:24,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:24,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:03:24,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:24,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:03:24,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:24,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:03:24,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:24,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-25 02:03:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:24,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:24,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:24,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:03:24,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:24,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 02:03:24,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:24,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 02:03:24,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:24,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:03:24,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:24,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:24,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:24,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:24,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:24,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:03:24,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:24,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 02:03:24,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:24,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:03:24,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:24,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 02:03:24,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:24,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:24,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:24,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:24,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:24,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:24,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:03:24,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:24,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:03:24,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:24,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:03:24,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:24,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:03:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:24,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:24,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:24,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:24,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:24,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:03:24,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:24,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:03:24,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:24,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:03:24,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:24,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:03:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:24,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:24,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:24,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:24,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:24,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 02:03:24,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:24,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:03:24,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:24,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:24,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:24,659 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 4 proven. 236 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2020-09-25 02:03:24,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328050366] [2020-09-25 02:03:24,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:03:24,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 02:03:24,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215660218] [2020-09-25 02:03:24,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 02:03:24,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:24,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 02:03:24,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-09-25 02:03:24,662 INFO L87 Difference]: Start difference. First operand 70 states and 80 transitions. Second operand 17 states. [2020-09-25 02:03:25,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:25,205 INFO L93 Difference]: Finished difference Result 96 states and 116 transitions. [2020-09-25 02:03:25,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 02:03:25,206 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 140 [2020-09-25 02:03:25,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:25,208 INFO L225 Difference]: With dead ends: 96 [2020-09-25 02:03:25,209 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 02:03:25,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2020-09-25 02:03:25,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 02:03:25,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 78. [2020-09-25 02:03:25,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 02:03:25,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 95 transitions. [2020-09-25 02:03:25,221 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 95 transitions. Word has length 140 [2020-09-25 02:03:25,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:25,222 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 95 transitions. [2020-09-25 02:03:25,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 02:03:25,222 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 95 transitions. [2020-09-25 02:03:25,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 02:03:25,224 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:25,224 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:03:25,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 02:03:25,225 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:25,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:25,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1001388386, now seen corresponding path program 6 times [2020-09-25 02:03:25,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:25,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12170319] [2020-09-25 02:03:25,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:25,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:25,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:25,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:25,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:25,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:25,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:25,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:25,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:26,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:26,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:26,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:26,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:27,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:27,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking...