/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_25x0-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:24:54,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:24:54,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:24:54,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:24:54,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:24:54,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:24:54,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:24:54,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:24:54,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:24:54,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:24:54,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:24:54,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:24:54,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:24:54,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:24:54,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:24:54,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:24:54,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:24:54,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:24:54,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:24:54,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:24:54,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:24:54,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:24:54,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:24:54,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:24:54,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:24:54,461 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:24:54,461 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:24:54,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:24:54,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:24:54,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:24:54,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:24:54,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:24:54,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:24:54,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:24:54,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:24:54,480 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:24:54,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:24:54,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:24:54,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:24:54,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:24:54,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:24:54,487 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 12:24:54,531 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:24:54,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:24:54,533 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:24:54,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:24:54,533 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:24:54,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:24:54,534 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:24:54,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:24:54,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:24:54,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:24:54,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:24:54,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:24:54,536 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:24:54,536 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:24:54,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:24:54,537 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:24:54,537 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:24:54,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:24:54,537 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:24:54,537 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:24:54,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:24:54,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:24:54,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:24:54,538 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:24:54,538 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:24:54,539 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:24:54,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:24:54,539 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:24:54,539 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:24:54,539 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:24:55,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:24:55,041 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:24:55,046 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:24:55,048 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:24:55,048 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:24:55,049 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_25x0-1.c [2020-09-21 12:24:55,129 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3830dc70/a052a21bf61f4bebbc875ae174a7e355/FLAG8435cd1c0 [2020-09-21 12:24:55,671 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:24:55,672 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_25x0-1.c [2020-09-21 12:24:55,680 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3830dc70/a052a21bf61f4bebbc875ae174a7e355/FLAG8435cd1c0 [2020-09-21 12:24:56,041 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3830dc70/a052a21bf61f4bebbc875ae174a7e355 [2020-09-21 12:24:56,055 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:24:56,062 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:24:56,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:24:56,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:24:56,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:24:56,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:24:56" (1/1) ... [2020-09-21 12:24:56,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4184b862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:56, skipping insertion in model container [2020-09-21 12:24:56,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:24:56" (1/1) ... [2020-09-21 12:24:56,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:24:56,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:24:56,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:24:56,321 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:24:56,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:24:56,356 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:24:56,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:56 WrapperNode [2020-09-21 12:24:56,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:24:56,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:24:56,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:24:56,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:24:56,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:56" (1/1) ... [2020-09-21 12:24:56,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:56" (1/1) ... [2020-09-21 12:24:56,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:56" (1/1) ... [2020-09-21 12:24:56,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:56" (1/1) ... [2020-09-21 12:24:56,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:56" (1/1) ... [2020-09-21 12:24:56,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:56" (1/1) ... [2020-09-21 12:24:56,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:56" (1/1) ... [2020-09-21 12:24:56,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:24:56,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:24:56,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:24:56,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:24:56,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:24:56,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:24:56,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:24:56,537 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-09-21 12:24:56,537 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:24:56,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:24:56,538 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-09-21 12:24:56,538 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:24:56,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:24:56,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:24:56,726 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:24:56,727 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 12:24:56,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:24:56 BoogieIcfgContainer [2020-09-21 12:24:56,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:24:56,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:24:56,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:24:56,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:24:56,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:24:56" (1/3) ... [2020-09-21 12:24:56,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2acbb003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:24:56, skipping insertion in model container [2020-09-21 12:24:56,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:56" (2/3) ... [2020-09-21 12:24:56,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2acbb003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:24:56, skipping insertion in model container [2020-09-21 12:24:56,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:24:56" (3/3) ... [2020-09-21 12:24:56,747 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_25x0-1.c [2020-09-21 12:24:56,760 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:24:56,774 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:24:56,804 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:24:56,842 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:24:56,843 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:24:56,843 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:24:56,843 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:24:56,844 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:24:56,844 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:24:56,844 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:24:56,844 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:24:56,873 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-09-21 12:24:56,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 12:24:56,883 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:56,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:56,885 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:56,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:56,894 INFO L82 PathProgramCache]: Analyzing trace with hash 2001781660, now seen corresponding path program 1 times [2020-09-21 12:24:56,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:56,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130906232] [2020-09-21 12:24:56,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:57,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:57,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:57,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:57,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 12:24:57,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:57,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-21 12:24:57,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:57,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:24:57,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:24:57,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:24:57,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:24:57,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:57,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:57,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:57,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:57,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:57,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:24:57,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:57,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:57,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:57,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:57,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:57,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:57,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:57,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:57,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:57,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:57,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 12:24:57,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:57,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:24:57,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:24:57,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:24:57,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:57,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:24:57,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130906232] [2020-09-21 12:24:57,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:24:57,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:24:57,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341871424] [2020-09-21 12:24:57,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:24:57,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:57,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:24:57,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:24:57,340 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2020-09-21 12:24:57,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:57,453 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-09-21 12:24:57,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:24:57,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-21 12:24:57,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:57,468 INFO L225 Difference]: With dead ends: 30 [2020-09-21 12:24:57,468 INFO L226 Difference]: Without dead ends: 18 [2020-09-21 12:24:57,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:24:57,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-09-21 12:24:57,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-09-21 12:24:57,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-09-21 12:24:57,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-09-21 12:24:57,527 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2020-09-21 12:24:57,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:57,527 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-09-21 12:24:57,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:24:57,528 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-09-21 12:24:57,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 12:24:57,530 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:57,530 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:57,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:24:57,531 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:57,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:57,531 INFO L82 PathProgramCache]: Analyzing trace with hash -118151420, now seen corresponding path program 1 times [2020-09-21 12:24:57,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:57,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833166468] [2020-09-21 12:24:57,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:57,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:57,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:57,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:57,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 12:24:57,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:57,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-09-21 12:24:57,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:57,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:24:57,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:24:57,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 12:24:57,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:57,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:57,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:57,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:57,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:57,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:57,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:24:57,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:57,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:57,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:57,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:57,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:57,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:57,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:57,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:57,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:24:57,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:57,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-21 12:24:57,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:57,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:24:57,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:24:57,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:24:57,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:57,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:57,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:57,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:58,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:58,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:58,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:58,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-21 12:24:58,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:58,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:24:58,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:58,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:24:58,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:58,047 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 12:24:58,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833166468] [2020-09-21 12:24:58,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:24:58,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 12:24:58,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938572321] [2020-09-21 12:24:58,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:24:58,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:58,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:24:58,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:24:58,055 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2020-09-21 12:24:58,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:58,127 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-09-21 12:24:58,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 12:24:58,128 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-09-21 12:24:58,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:58,130 INFO L225 Difference]: With dead ends: 25 [2020-09-21 12:24:58,130 INFO L226 Difference]: Without dead ends: 21 [2020-09-21 12:24:58,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:24:58,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-09-21 12:24:58,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-09-21 12:24:58,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-09-21 12:24:58,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-09-21 12:24:58,148 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2020-09-21 12:24:58,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:58,149 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-09-21 12:24:58,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:24:58,149 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-09-21 12:24:58,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 12:24:58,153 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:58,154 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:58,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:24:58,154 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:58,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:58,155 INFO L82 PathProgramCache]: Analyzing trace with hash 764931548, now seen corresponding path program 2 times [2020-09-21 12:24:58,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:58,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217649956] [2020-09-21 12:24:58,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:58,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:58,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:58,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:58,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 12:24:58,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:58,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-21 12:24:58,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:58,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:24:58,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:24:58,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:24:58,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:58,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:58,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:58,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:58,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:58,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:58,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:24:58,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:58,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:58,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:58,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:58,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:58,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:58,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:58,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:58,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:24:58,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:58,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-21 12:24:58,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:58,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:24:58,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:24:58,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-21 12:24:58,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:58,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:58,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:58,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:58,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:24:58,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:58,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-21 12:24:58,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:58,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:24:58,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:58,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:24:58,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:58,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:58,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:58,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:58,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:58,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:58,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 12:24:58,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:58,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:24:58,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:58,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:24:58,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:58,645 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-21 12:24:58,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217649956] [2020-09-21 12:24:58,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:24:58,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 12:24:58,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460247299] [2020-09-21 12:24:58,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:24:58,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:58,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:24:58,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:24:58,648 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 8 states. [2020-09-21 12:24:58,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:58,811 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-09-21 12:24:58,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:24:58,811 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-09-21 12:24:58,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:58,813 INFO L225 Difference]: With dead ends: 28 [2020-09-21 12:24:58,813 INFO L226 Difference]: Without dead ends: 24 [2020-09-21 12:24:58,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:24:58,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-21 12:24:58,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-09-21 12:24:58,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-21 12:24:58,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-09-21 12:24:58,821 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 25 [2020-09-21 12:24:58,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:58,822 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-09-21 12:24:58,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:24:58,822 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-09-21 12:24:58,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-21 12:24:58,824 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:58,824 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:58,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:24:58,825 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:58,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:58,825 INFO L82 PathProgramCache]: Analyzing trace with hash 601942852, now seen corresponding path program 3 times [2020-09-21 12:24:58,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:58,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356290367] [2020-09-21 12:24:58,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:58,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:58,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:59,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:59,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:24:59,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:59,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-09-21 12:24:59,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:59,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 12:24:59,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:24:59,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:24:59,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:59,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:59,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:59,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:59,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:59,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:59,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:24:59,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:59,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:59,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:59,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:59,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:59,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:59,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:59,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:59,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:24:59,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:59,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-21 12:24:59,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:59,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 12:24:59,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:24:59,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-21 12:24:59,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:59,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:59,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:59,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:59,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:24:59,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:59,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-21 12:24:59,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:59,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:24:59,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:59,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:24:59,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:59,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:59,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:59,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:59,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:24:59,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:59,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-21 12:24:59,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:59,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:24:59,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:59,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:24:59,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:59,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:59,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:59,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:59,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:59,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:59,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:24:59,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:59,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:24:59,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:59,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:24:59,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:59,413 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-21 12:24:59,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356290367] [2020-09-21 12:24:59,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:24:59,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 12:24:59,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481024274] [2020-09-21 12:24:59,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 12:24:59,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:59,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 12:24:59,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:24:59,417 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 10 states. [2020-09-21 12:24:59,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:59,517 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-09-21 12:24:59,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:24:59,518 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-09-21 12:24:59,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:59,519 INFO L225 Difference]: With dead ends: 31 [2020-09-21 12:24:59,519 INFO L226 Difference]: Without dead ends: 27 [2020-09-21 12:24:59,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:24:59,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-09-21 12:24:59,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-09-21 12:24:59,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-21 12:24:59,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-09-21 12:24:59,527 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 31 [2020-09-21 12:24:59,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:59,527 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-09-21 12:24:59,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 12:24:59,528 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-09-21 12:24:59,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-21 12:24:59,529 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:59,529 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:59,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:24:59,530 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:59,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:59,530 INFO L82 PathProgramCache]: Analyzing trace with hash -183109604, now seen corresponding path program 4 times [2020-09-21 12:24:59,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:59,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347384717] [2020-09-21 12:24:59,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:59,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:59,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:59,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:59,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-21 12:24:59,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:59,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-09-21 12:24:59,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:59,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-21 12:24:59,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:24:59,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 12:24:59,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:59,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:59,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:59,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:59,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:59,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:59,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:24:59,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:59,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:59,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:59,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:59,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:59,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:59,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:59,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:59,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:24:59,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:59,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-21 12:24:59,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:59,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-21 12:24:59,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:24:59,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-21 12:24:59,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:00,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:00,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:00,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:00,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:25:00,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:00,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-21 12:25:00,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:00,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:25:00,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:00,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:25:00,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:00,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:00,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:00,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:00,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:25:00,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:00,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-21 12:25:00,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:00,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:25:00,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:00,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:25:00,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:00,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:00,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:00,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:00,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:25:00,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:00,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-21 12:25:00,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:00,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:25:00,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:00,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:25:00,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:00,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:00,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:00,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:00,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:25:00,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:00,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-21 12:25:00,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:00,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:25:00,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:00,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:25:00,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:00,306 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 28 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-21 12:25:00,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347384717] [2020-09-21 12:25:00,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:25:00,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 12:25:00,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137758761] [2020-09-21 12:25:00,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 12:25:00,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:00,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 12:25:00,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:25:00,309 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 10 states. [2020-09-21 12:25:00,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:00,407 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-09-21 12:25:00,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:25:00,408 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2020-09-21 12:25:00,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:00,409 INFO L225 Difference]: With dead ends: 34 [2020-09-21 12:25:00,409 INFO L226 Difference]: Without dead ends: 30 [2020-09-21 12:25:00,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:25:00,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-21 12:25:00,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-21 12:25:00,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-21 12:25:00,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-21 12:25:00,417 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 37 [2020-09-21 12:25:00,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:00,417 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-21 12:25:00,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 12:25:00,418 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-21 12:25:00,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-21 12:25:00,435 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:00,435 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:00,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:25:00,435 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:00,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:00,436 INFO L82 PathProgramCache]: Analyzing trace with hash -155447420, now seen corresponding path program 5 times [2020-09-21 12:25:00,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:00,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909932587] [2020-09-21 12:25:00,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:00,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:00,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:01,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:01,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-21 12:25:01,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:01,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 815 [2020-09-21 12:25:01,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:01,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 12:25:01,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:25:01,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:25:01,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:01,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:01,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:01,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:01,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:01,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:01,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:25:01,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:01,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:01,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:01,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:01,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:25:01,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:25:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:01,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:01,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:01,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:25:01,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:01,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-21 12:25:01,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:01,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 12:25:01,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:25:01,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-21 12:25:01,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:01,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:01,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:01,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:01,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:25:01,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:01,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-21 12:25:01,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:25:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:25:01,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:01,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:01,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:01,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:01,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:25:01,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:01,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-21 12:25:01,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:01,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:25:01,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:01,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:25:01,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:01,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:01,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:01,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:01,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:25:01,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:01,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-21 12:25:01,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:01,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:25:01,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:01,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:25:01,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:01,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:01,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:01,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:01,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:25:01,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:01,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-21 12:25:01,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:01,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:25:01,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:01,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:25:01,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:01,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:01,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:01,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:01,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:25:01,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:01,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:25:01,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:01,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:25:01,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:01,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:25:01,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:01,823 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 6 proven. 48 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-21 12:25:01,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909932587] [2020-09-21 12:25:01,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:25:01,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-21 12:25:01,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066727801] [2020-09-21 12:25:01,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 12:25:01,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:01,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 12:25:01,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:25:01,827 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states. [2020-09-21 12:25:01,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:01,956 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-09-21 12:25:01,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:25:01,957 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-09-21 12:25:01,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:01,958 INFO L225 Difference]: With dead ends: 37 [2020-09-21 12:25:01,958 INFO L226 Difference]: Without dead ends: 33 [2020-09-21 12:25:01,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-09-21 12:25:01,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-21 12:25:01,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-21 12:25:01,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-21 12:25:01,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-09-21 12:25:01,973 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 43 [2020-09-21 12:25:01,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:01,974 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-09-21 12:25:01,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 12:25:01,974 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-09-21 12:25:01,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-21 12:25:01,979 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:01,979 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:01,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:25:01,980 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:01,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:01,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1716183644, now seen corresponding path program 6 times [2020-09-21 12:25:01,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:01,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491095156] [2020-09-21 12:25:01,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:02,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:02,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:03,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:03,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-21 12:25:03,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:03,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-21 12:25:03,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:03,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-21 12:25:03,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:25:03,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-21 12:25:03,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:03,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:03,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:03,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:03,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:03,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:03,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:03,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:03,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:03,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:03,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:03,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:03,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:25:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:03,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:03,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:03,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:25:03,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:03,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-09-21 12:25:03,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:03,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-21 12:25:03,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:25:03,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-21 12:25:03,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:03,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:03,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:03,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:03,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:03,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:25:03,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:03,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-21 12:25:03,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:03,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:25:03,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:03,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-21 12:25:03,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:03,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:03,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:03,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:03,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:25:03,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:03,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-21 12:25:03,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:03,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:25:03,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:03,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:25:03,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:03,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:03,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:03,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:03,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:25:03,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:03,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-21 12:25:03,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:03,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:25:03,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:03,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:25:03,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:03,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:03,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:03,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:03,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:25:03,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:03,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-21 12:25:03,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:03,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:25:03,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:03,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:25:03,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:03,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:03,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:03,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:03,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:25:03,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:03,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 12:25:03,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:03,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:25:03,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:03,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:25:03,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:03,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:03,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:03,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:03,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:25:03,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:03,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:25:03,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:03,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:25:03,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:03,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:25:03,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:03,834 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-21 12:25:03,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491095156] [2020-09-21 12:25:03,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:25:03,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-21 12:25:03,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235091077] [2020-09-21 12:25:03,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 12:25:03,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:03,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 12:25:03,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:25:03,837 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 11 states. [2020-09-21 12:25:03,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:03,968 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-09-21 12:25:03,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:25:03,969 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-09-21 12:25:03,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:03,970 INFO L225 Difference]: With dead ends: 40 [2020-09-21 12:25:03,970 INFO L226 Difference]: Without dead ends: 36 [2020-09-21 12:25:03,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-09-21 12:25:03,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-21 12:25:03,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-21 12:25:03,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-21 12:25:03,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-09-21 12:25:03,977 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 49 [2020-09-21 12:25:03,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:03,977 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-09-21 12:25:03,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 12:25:03,977 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-09-21 12:25:03,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-21 12:25:03,978 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:03,979 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:03,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:25:03,979 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:03,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:03,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1079602236, now seen corresponding path program 7 times [2020-09-21 12:25:03,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:03,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045138862] [2020-09-21 12:25:03,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:04,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:04,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:04,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:04,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 12:25:04,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:04,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 510 [2020-09-21 12:25:04,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:04,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 12:25:04,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:25:04,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-21 12:25:04,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:04,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:04,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:04,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:04,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:04,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:04,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:04,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:04,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:04,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:04,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:04,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:04,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:25:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:04,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:04,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:04,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 12:25:04,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:04,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-21 12:25:04,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:04,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 12:25:04,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:25:04,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-21 12:25:04,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:04,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:04,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:04,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:04,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:25:04,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:04,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-21 12:25:04,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:04,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:25:04,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:04,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-21 12:25:04,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:04,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:04,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:04,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:04,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:25:04,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:04,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-21 12:25:04,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:04,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:25:04,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:04,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-21 12:25:04,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:05,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:05,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:05,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:05,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:25:05,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:05,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-21 12:25:05,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:05,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:25:05,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:05,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:25:05,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:05,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:05,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:05,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:05,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:25:05,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:05,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-21 12:25:05,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:05,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:25:05,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:05,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:25:05,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:05,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:05,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:05,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:05,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:25:05,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:05,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-21 12:25:05,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:05,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:25:05,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:05,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:25:05,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:05,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:05,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:05,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:05,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:25:05,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:05,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 12:25:05,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:05,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:25:05,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:05,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:25:05,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:05,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:05,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:05,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:05,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:25:05,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:05,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:25:05,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:05,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:25:05,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:05,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:25:05,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:05,525 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 10 proven. 89 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-09-21 12:25:05,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045138862] [2020-09-21 12:25:05,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:25:05,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-21 12:25:05,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760473978] [2020-09-21 12:25:05,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-21 12:25:05,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:05,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-21 12:25:05,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-21 12:25:05,530 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 13 states. [2020-09-21 12:25:05,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:05,691 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-09-21 12:25:05,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:25:05,692 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-09-21 12:25:05,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:05,693 INFO L225 Difference]: With dead ends: 43 [2020-09-21 12:25:05,693 INFO L226 Difference]: Without dead ends: 39 [2020-09-21 12:25:05,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2020-09-21 12:25:05,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-21 12:25:05,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-09-21 12:25:05,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-21 12:25:05,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-09-21 12:25:05,708 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 55 [2020-09-21 12:25:05,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:05,709 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-09-21 12:25:05,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-21 12:25:05,709 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-09-21 12:25:05,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-21 12:25:05,712 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:05,712 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:05,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:25:05,713 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:05,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:05,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1035381916, now seen corresponding path program 8 times [2020-09-21 12:25:05,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:05,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537952907] [2020-09-21 12:25:05,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:05,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:06,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:06,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:06,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-21 12:25:06,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:06,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 754 [2020-09-21 12:25:06,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:06,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-21 12:25:06,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:25:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-21 12:25:06,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:06,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:06,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:06,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:06,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:06,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:06,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:06,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:06,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:06,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:06,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:06,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:06,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:25:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:06,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:06,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:06,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 12:25:06,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:06,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446 [2020-09-21 12:25:06,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:06,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-21 12:25:06,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:25:06,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-21 12:25:06,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:07,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:07,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:07,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:07,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 12:25:07,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:07,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 428 [2020-09-21 12:25:07,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:07,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-21 12:25:07,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:07,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-21 12:25:07,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:07,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:07,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:07,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:07,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:25:07,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:07,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-09-21 12:25:07,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:07,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:25:07,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:07,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-21 12:25:07,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:07,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:07,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:08,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:08,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:25:08,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:08,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-21 12:25:08,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:08,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:25:08,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:08,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-21 12:25:08,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:08,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:08,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:08,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:08,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:25:08,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:08,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-21 12:25:08,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:25:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:25:08,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:08,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:08,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:08,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:08,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:25:08,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:08,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-21 12:25:08,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:08,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:25:08,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:08,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:25:08,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:08,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:08,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:08,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:08,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:08,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:25:08,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:08,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-21 12:25:08,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:08,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:25:08,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:08,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:25:08,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:08,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:08,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:08,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:08,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:25:08,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:08,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 12:25:08,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:08,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:25:08,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:08,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:25:08,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:08,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:08,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:08,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:08,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:25:08,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:08,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 12:25:08,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:08,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:25:08,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:08,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:25:08,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:08,436 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 8 proven. 100 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-09-21 12:25:08,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537952907] [2020-09-21 12:25:08,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:25:08,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-21 12:25:08,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194539748] [2020-09-21 12:25:08,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-21 12:25:08,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:08,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-21 12:25:08,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:25:08,443 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 14 states. [2020-09-21 12:25:08,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:08,592 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-09-21 12:25:08,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 12:25:08,593 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 61 [2020-09-21 12:25:08,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:08,594 INFO L225 Difference]: With dead ends: 46 [2020-09-21 12:25:08,595 INFO L226 Difference]: Without dead ends: 42 [2020-09-21 12:25:08,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2020-09-21 12:25:08,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-21 12:25:08,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-21 12:25:08,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-21 12:25:08,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-09-21 12:25:08,608 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 61 [2020-09-21 12:25:08,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:08,609 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-09-21 12:25:08,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-21 12:25:08,609 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-09-21 12:25:08,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-21 12:25:08,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:08,612 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:08,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:25:08,612 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:08,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:08,612 INFO L82 PathProgramCache]: Analyzing trace with hash 952137732, now seen corresponding path program 9 times [2020-09-21 12:25:08,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:08,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407925641] [2020-09-21 12:25:08,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:08,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:09,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:09,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:09,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-21 12:25:09,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:09,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-21 12:25:09,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:09,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-21 12:25:09,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:25:09,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-21 12:25:09,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:09,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:09,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:09,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:09,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:09,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:09,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:09,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:09,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:09,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:25:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:09,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:10,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:10,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:25:10,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:10,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 655 [2020-09-21 12:25:10,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:10,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-21 12:25:10,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:25:10,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-21 12:25:10,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:10,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:10,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:10,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:10,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 12:25:10,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:10,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-09-21 12:25:10,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:10,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-21 12:25:10,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:10,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-21 12:25:10,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:10,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:10,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:11,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:11,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 12:25:11,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:11,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 407 [2020-09-21 12:25:11,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:11,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-21 12:25:11,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:11,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-21 12:25:11,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:11,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:11,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:11,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:11,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:25:11,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:11,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-09-21 12:25:11,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:11,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:25:11,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:11,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-21 12:25:11,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:11,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:11,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:11,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:11,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:25:11,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:11,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-21 12:25:11,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:11,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:25:11,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:11,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-21 12:25:11,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:11,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:11,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:11,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:11,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:11,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:25:11,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:11,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-21 12:25:11,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:11,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:25:11,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:11,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:25:11,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:11,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:11,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:11,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:11,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:25:11,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:11,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-21 12:25:11,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:11,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:25:11,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:11,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:25:11,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:11,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:11,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:12,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:12,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:25:12,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:12,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-21 12:25:12,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:12,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:25:12,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:12,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:25:12,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:12,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:12,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:12,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:12,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:25:12,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:12,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-21 12:25:12,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:12,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:25:12,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:12,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:25:12,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:12,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:12,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:12,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:12,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:25:12,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:12,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:25:12,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:12,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:25:12,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:12,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:25:12,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:12,163 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 12 proven. 157 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-09-21 12:25:12,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407925641] [2020-09-21 12:25:12,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:25:12,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-21 12:25:12,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216707057] [2020-09-21 12:25:12,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-21 12:25:12,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:12,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-21 12:25:12,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2020-09-21 12:25:12,167 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 16 states. [2020-09-21 12:25:12,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:12,390 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-09-21 12:25:12,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 12:25:12,390 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 67 [2020-09-21 12:25:12,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:12,391 INFO L225 Difference]: With dead ends: 49 [2020-09-21 12:25:12,392 INFO L226 Difference]: Without dead ends: 45 [2020-09-21 12:25:12,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=226, Invalid=424, Unknown=0, NotChecked=0, Total=650 [2020-09-21 12:25:12,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-21 12:25:12,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-21 12:25:12,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-21 12:25:12,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-09-21 12:25:12,399 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 67 [2020-09-21 12:25:12,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:12,399 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-09-21 12:25:12,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-21 12:25:12,399 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-09-21 12:25:12,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-21 12:25:12,400 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:12,400 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:12,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:25:12,401 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:12,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:12,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1540970204, now seen corresponding path program 10 times [2020-09-21 12:25:12,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:12,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928493234] [2020-09-21 12:25:12,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:12,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:12,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:13,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:13,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-21 12:25:13,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:13,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-21 12:25:13,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:13,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-21 12:25:13,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:25:13,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-21 12:25:13,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:13,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:13,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:13,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:13,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:13,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:13,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:13,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:13,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:13,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:13,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:13,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:13,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:13,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:25:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:13,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:13,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:13,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-21 12:25:13,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:13,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-09-21 12:25:13,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:13,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-21 12:25:13,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:25:13,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-21 12:25:13,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:13,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:13,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:13,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:13,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:25:13,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:13,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-21 12:25:13,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:13,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-21 12:25:13,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:13,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-21 12:25:13,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:13,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:13,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:14,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:14,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 12:25:14,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:14,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-09-21 12:25:14,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:14,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-21 12:25:14,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:14,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-21 12:25:14,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:14,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:14,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:14,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:14,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 12:25:14,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:14,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-09-21 12:25:14,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:14,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-21 12:25:14,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:14,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-21 12:25:14,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:14,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:14,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:15,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:15,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:25:15,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:15,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-09-21 12:25:15,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:15,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:25:15,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:15,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-21 12:25:15,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:15,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:15,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:15,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:15,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:25:15,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:15,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-21 12:25:15,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:15,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:25:15,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:15,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-21 12:25:15,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:15,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:15,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:15,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:15,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:15,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:25:15,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:15,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-21 12:25:15,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:15,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:25:15,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:15,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:25:15,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:15,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:15,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:15,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:15,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:25:15,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:15,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-21 12:25:15,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:15,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:25:15,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:15,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:25:15,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:15,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:15,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:15,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:15,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:25:15,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:15,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-21 12:25:15,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:15,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:25:15,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:15,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:25:15,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:15,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:15,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:15,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:15,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:25:15,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:15,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 12:25:15,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:15,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:25:15,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:15,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:25:15,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:15,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:15,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:15,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:15,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:25:15,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:15,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:25:15,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:15,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:25:15,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:15,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:25:15,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:15,837 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 42 proven. 165 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-09-21 12:25:15,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928493234] [2020-09-21 12:25:15,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:25:15,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-21 12:25:15,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463339640] [2020-09-21 12:25:15,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-21 12:25:15,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:15,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-21 12:25:15,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-09-21 12:25:15,840 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 16 states. [2020-09-21 12:25:16,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:16,031 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-09-21 12:25:16,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 12:25:16,032 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 73 [2020-09-21 12:25:16,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:16,033 INFO L225 Difference]: With dead ends: 52 [2020-09-21 12:25:16,033 INFO L226 Difference]: Without dead ends: 48 [2020-09-21 12:25:16,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=250, Invalid=452, Unknown=0, NotChecked=0, Total=702 [2020-09-21 12:25:16,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-21 12:25:16,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-21 12:25:16,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-21 12:25:16,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-09-21 12:25:16,044 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 73 [2020-09-21 12:25:16,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:16,045 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-09-21 12:25:16,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-21 12:25:16,045 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-09-21 12:25:16,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-21 12:25:16,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:16,046 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:16,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 12:25:16,046 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:16,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:16,047 INFO L82 PathProgramCache]: Analyzing trace with hash -2010530748, now seen corresponding path program 11 times [2020-09-21 12:25:16,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:16,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13295934] [2020-09-21 12:25:16,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:16,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:16,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:17,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:17,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-21 12:25:17,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:17,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1048 [2020-09-21 12:25:17,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:17,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-21 12:25:17,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:25:17,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-21 12:25:17,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:17,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:17,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:17,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:17,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:17,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:17,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:17,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:17,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:17,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:17,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:17,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:17,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:25:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:17,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:18,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:18,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-21 12:25:18,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:18,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 944 [2020-09-21 12:25:18,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:18,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-21 12:25:18,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:25:18,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-21 12:25:18,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:18,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:18,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:18,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:18,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-21 12:25:18,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:18,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 680 [2020-09-21 12:25:18,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:18,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-21 12:25:18,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:18,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-21 12:25:18,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:18,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:18,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:19,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:19,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:25:19,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:19,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-09-21 12:25:19,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:19,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-21 12:25:19,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:19,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-21 12:25:19,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:19,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:19,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:19,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:19,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 12:25:19,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:19,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-21 12:25:19,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:19,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-21 12:25:19,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:19,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-21 12:25:19,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:19,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:19,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:19,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:19,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 12:25:19,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:19,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-09-21 12:25:19,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:19,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-21 12:25:19,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:19,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-21 12:25:19,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:19,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:19,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:19,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:20,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:20,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:25:20,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:20,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-09-21 12:25:20,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:20,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:25:20,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:20,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-21 12:25:20,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:20,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:20,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:20,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:20,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:25:20,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:20,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-21 12:25:20,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:20,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:25:20,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:20,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-21 12:25:20,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:20,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:20,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:20,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:20,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:25:20,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:20,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-21 12:25:20,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:20,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:25:20,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:20,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:25:20,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:20,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:20,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:20,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:20,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:25:20,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:20,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-21 12:25:20,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:20,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:25:20,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:20,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:25:20,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:20,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:20,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:20,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:20,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:25:20,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:20,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-21 12:25:20,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:20,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:25:20,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:20,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:25:20,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:20,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:20,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:20,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:20,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:25:20,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:20,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:25:20,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:20,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:25:20,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:20,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:25:20,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:20,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:20,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:20,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:20,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:25:20,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:20,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:25:20,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:20,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:25:20,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:20,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:25:20,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:20,718 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 22 proven. 216 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2020-09-21 12:25:20,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13295934] [2020-09-21 12:25:20,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:25:20,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-21 12:25:20,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967410032] [2020-09-21 12:25:20,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-21 12:25:20,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:20,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-21 12:25:20,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2020-09-21 12:25:20,721 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 17 states. [2020-09-21 12:25:20,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:20,905 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-09-21 12:25:20,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 12:25:20,905 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 79 [2020-09-21 12:25:20,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:20,907 INFO L225 Difference]: With dead ends: 55 [2020-09-21 12:25:20,908 INFO L226 Difference]: Without dead ends: 51 [2020-09-21 12:25:20,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=290, Invalid=522, Unknown=0, NotChecked=0, Total=812 [2020-09-21 12:25:20,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-21 12:25:20,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-09-21 12:25:20,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-21 12:25:20,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2020-09-21 12:25:20,919 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 79 [2020-09-21 12:25:20,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:20,919 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2020-09-21 12:25:20,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-21 12:25:20,919 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2020-09-21 12:25:20,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-21 12:25:20,922 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:20,922 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:20,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 12:25:20,922 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:20,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:20,923 INFO L82 PathProgramCache]: Analyzing trace with hash -986521316, now seen corresponding path program 12 times [2020-09-21 12:25:20,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:20,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951982539] [2020-09-21 12:25:20,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:20,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:21,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:22,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:22,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-21 12:25:22,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:22,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1185 [2020-09-21 12:25:22,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:22,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-21 12:25:22,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:25:22,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-21 12:25:22,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:22,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:22,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:22,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:22,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:22,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:22,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:22,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:22,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:22,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:22,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:22,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:22,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:25:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:22,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:22,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:22,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-21 12:25:22,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:22,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 703 [2020-09-21 12:25:22,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:22,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-21 12:25:22,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:25:22,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-21 12:25:22,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:22,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:22,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:23,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:23,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-21 12:25:23,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:23,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 622 [2020-09-21 12:25:23,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:23,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-21 12:25:23,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:23,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-21 12:25:23,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:23,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:23,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:23,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:23,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-21 12:25:23,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:23,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-21 12:25:23,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:23,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-21 12:25:23,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:23,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-21 12:25:23,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:23,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:23,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:24,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:24,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:25:24,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:24,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-09-21 12:25:24,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:24,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-21 12:25:24,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:24,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-21 12:25:24,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:24,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:24,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:24,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:24,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 12:25:24,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:24,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-09-21 12:25:24,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:24,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-21 12:25:24,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:24,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-21 12:25:24,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:24,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:24,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:24,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:24,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:24,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 12:25:24,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:24,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-21 12:25:24,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:24,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-21 12:25:24,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:24,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-21 12:25:24,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:24,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:24,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:25,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:25,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:25:25,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:25,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-21 12:25:25,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:25,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:25:25,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:25,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-21 12:25:25,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:25,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:25,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:25,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:25,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:25:25,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:25,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-21 12:25:25,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:25,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:25:25,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:25,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-21 12:25:25,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:25,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:25,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:25,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:25,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:25:25,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:25,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-21 12:25:25,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:25,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:25:25,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:25,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:25:25,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:25,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:25,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:25,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:25,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:25:25,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:25,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-21 12:25:25,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:25,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:25:25,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:25,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:25:25,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:25,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:25,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:25,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:25,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:25:25,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:25,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-21 12:25:25,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:25,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:25:25,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:25,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:25:25,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:25,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:25,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:25,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:25,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:25:25,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:25,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 12:25:25,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:25,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:25:25,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:25,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:25:25,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:25,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:25,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:25,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:25,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:25:25,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:25,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 12:25:25,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:25,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:25:25,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:25,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:25:25,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:25,760 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 44 proven. 250 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-09-21 12:25:25,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951982539] [2020-09-21 12:25:25,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:25:25,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-21 12:25:25,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474505302] [2020-09-21 12:25:25,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-21 12:25:25,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:25,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-21 12:25:25,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2020-09-21 12:25:25,762 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 18 states. [2020-09-21 12:25:25,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:25,988 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2020-09-21 12:25:25,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-21 12:25:25,989 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 85 [2020-09-21 12:25:25,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:25,991 INFO L225 Difference]: With dead ends: 58 [2020-09-21 12:25:25,991 INFO L226 Difference]: Without dead ends: 54 [2020-09-21 12:25:25,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=333, Invalid=597, Unknown=0, NotChecked=0, Total=930 [2020-09-21 12:25:25,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-21 12:25:25,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-21 12:25:25,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-21 12:25:25,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-09-21 12:25:25,998 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 85 [2020-09-21 12:25:25,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:25,999 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-09-21 12:25:25,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-21 12:25:25,999 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-09-21 12:25:26,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-21 12:25:26,000 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:26,000 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:26,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 12:25:26,000 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:26,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:26,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1073897604, now seen corresponding path program 13 times [2020-09-21 12:25:26,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:26,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096380080] [2020-09-21 12:25:26,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:26,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:26,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:27,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:27,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-21 12:25:27,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:27,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1100 [2020-09-21 12:25:27,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:27,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-21 12:25:27,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:25:27,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-21 12:25:27,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:27,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:27,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:27,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:27,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:27,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:27,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:27,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:27,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:27,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:27,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:27,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:27,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:25:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:27,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:27,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:27,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-21 12:25:27,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:27,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-09-21 12:25:27,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:27,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-21 12:25:27,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:25:27,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-21 12:25:27,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:27,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:27,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:28,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:28,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-21 12:25:28,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:28,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 759 [2020-09-21 12:25:28,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:28,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-21 12:25:28,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:28,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-21 12:25:28,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:28,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:28,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:28,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:28,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-21 12:25:28,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:28,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 652 [2020-09-21 12:25:28,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:28,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-21 12:25:28,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:28,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-21 12:25:28,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:28,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:28,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:29,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:29,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-21 12:25:29,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:29,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-09-21 12:25:29,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:29,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-21 12:25:29,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:29,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-21 12:25:29,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:29,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:29,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:29,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:29,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:25:29,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:29,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-09-21 12:25:29,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:29,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-21 12:25:29,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:29,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-21 12:25:29,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:29,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:29,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:30,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:30,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 12:25:30,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:30,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-21 12:25:30,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:30,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-21 12:25:30,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:30,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-21 12:25:30,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:30,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:30,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:30,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:30,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 12:25:30,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:30,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-09-21 12:25:30,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:30,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-21 12:25:30,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:30,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-21 12:25:30,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:30,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:30,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:30,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:30,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:25:30,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:30,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-21 12:25:30,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:30,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:25:30,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:30,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-21 12:25:30,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:30,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:30,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:30,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:30,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:25:30,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:30,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-21 12:25:30,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:30,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:25:30,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:30,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-21 12:25:30,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:30,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:30,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:30,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:30,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:25:30,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:30,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-21 12:25:30,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:30,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:25:30,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:30,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:25:30,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:30,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:30,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:31,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:31,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:25:31,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:31,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-21 12:25:31,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:31,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:25:31,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:31,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:25:31,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:25:31,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:31,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:31,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:31,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:25:31,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:31,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-21 12:25:31,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:31,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:25:31,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:31,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:25:31,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:25:31,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:31,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:31,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:31,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:25:31,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:31,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-21 12:25:31,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:31,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:25:31,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:31,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:25:31,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:25:31,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:31,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:31,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:31,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:25:31,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:31,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:25:31,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:31,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:25:31,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:31,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:25:31,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:31,366 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 48 proven. 305 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-09-21 12:25:31,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096380080] [2020-09-21 12:25:31,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:25:31,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-21 12:25:31,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979693525] [2020-09-21 12:25:31,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-21 12:25:31,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:31,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-21 12:25:31,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=250, Unknown=0, NotChecked=0, Total=380 [2020-09-21 12:25:31,370 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 20 states. [2020-09-21 12:25:31,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:31,696 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-09-21 12:25:31,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-21 12:25:31,697 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 91 [2020-09-21 12:25:31,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:31,699 INFO L225 Difference]: With dead ends: 61 [2020-09-21 12:25:31,699 INFO L226 Difference]: Without dead ends: 57 [2020-09-21 12:25:31,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=396, Invalid=726, Unknown=0, NotChecked=0, Total=1122 [2020-09-21 12:25:31,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-21 12:25:31,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-09-21 12:25:31,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-21 12:25:31,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2020-09-21 12:25:31,720 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 91 [2020-09-21 12:25:31,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:31,721 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2020-09-21 12:25:31,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-21 12:25:31,722 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2020-09-21 12:25:31,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-09-21 12:25:31,724 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:31,726 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:31,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 12:25:31,726 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:31,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:31,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1572648100, now seen corresponding path program 14 times [2020-09-21 12:25:31,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:31,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094524605] [2020-09-21 12:25:31,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:31,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:32,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:33,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:33,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-21 12:25:33,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:33,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1360 [2020-09-21 12:25:33,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:33,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-21 12:25:33,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:25:33,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-21 12:25:33,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:33,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:33,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:33,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:33,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:33,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:33,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:33,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:33,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:33,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:33,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:25:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:33,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:34,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:34,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-21 12:25:34,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:34,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-21 12:25:34,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:34,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-21 12:25:34,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:25:34,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-21 12:25:34,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:34,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:34,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:34,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:35,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:35,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-21 12:25:35,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:35,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-21 12:25:35,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:35,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-21 12:25:35,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:35,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-21 12:25:35,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:35,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:35,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:36,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:36,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-21 12:25:36,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:36,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-21 12:25:36,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:36,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-21 12:25:36,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:36,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-21 12:25:36,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:36,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:36,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:36,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:36,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-21 12:25:36,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:36,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-09-21 12:25:36,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:36,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-21 12:25:36,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:36,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-21 12:25:36,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:36,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:36,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:36,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:36,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-21 12:25:36,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:36,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-21 12:25:36,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:36,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-21 12:25:36,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:36,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-21 12:25:36,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:36,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:36,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:37,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:37,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:25:37,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:37,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-21 12:25:37,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:37,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-21 12:25:37,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:37,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-21 12:25:37,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:37,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:37,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:37,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:37,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 12:25:37,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:37,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-09-21 12:25:37,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:37,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-21 12:25:37,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:37,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-21 12:25:37,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:37,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:37,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:37,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:37,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 12:25:37,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:37,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-09-21 12:25:37,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:37,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-21 12:25:37,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:37,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-21 12:25:37,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:37,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:37,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:38,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:38,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:25:38,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:38,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-21 12:25:38,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:38,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:25:38,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:38,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-21 12:25:38,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:38,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:38,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:38,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:38,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:25:38,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:38,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-21 12:25:38,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:38,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:25:38,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:38,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-21 12:25:38,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:38,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:38,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:38,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:38,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:25:38,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:38,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-21 12:25:38,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:38,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:25:38,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:38,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:25:38,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:38,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:38,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:38,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:38,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:38,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:25:38,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:38,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-21 12:25:38,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:38,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:25:38,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:38,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:25:38,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:38,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:38,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:38,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:38,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:25:38,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:38,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-21 12:25:38,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:38,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:25:38,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:38,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:25:38,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:38,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:38,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:38,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:38,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:25:38,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:38,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 12:25:38,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:38,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:25:38,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:38,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:25:38,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:38,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:38,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:38,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:38,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:25:38,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:38,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:25:38,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:38,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:25:38,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:38,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:25:38,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:38,574 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 53 proven. 353 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2020-09-21 12:25:38,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094524605] [2020-09-21 12:25:38,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:25:38,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-21 12:25:38,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433127570] [2020-09-21 12:25:38,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-21 12:25:38,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:38,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-21 12:25:38,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=237, Unknown=0, NotChecked=0, Total=380 [2020-09-21 12:25:38,576 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 20 states. [2020-09-21 12:25:38,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:38,786 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-09-21 12:25:38,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-21 12:25:38,787 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 97 [2020-09-21 12:25:38,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:38,788 INFO L225 Difference]: With dead ends: 64 [2020-09-21 12:25:38,788 INFO L226 Difference]: Without dead ends: 60 [2020-09-21 12:25:38,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=428, Invalid=762, Unknown=0, NotChecked=0, Total=1190 [2020-09-21 12:25:38,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-21 12:25:38,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-21 12:25:38,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-21 12:25:38,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-09-21 12:25:38,794 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 97 [2020-09-21 12:25:38,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:38,795 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-09-21 12:25:38,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-21 12:25:38,795 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-09-21 12:25:38,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-21 12:25:38,796 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:38,796 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:38,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-21 12:25:38,797 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:38,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:38,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1584030916, now seen corresponding path program 15 times [2020-09-21 12:25:38,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:38,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503360598] [2020-09-21 12:25:38,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:38,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:39,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:40,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:40,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-21 12:25:40,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:40,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1555 [2020-09-21 12:25:40,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:40,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-21 12:25:40,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:25:40,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-21 12:25:40,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:40,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:40,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:40,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:40,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:40,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:40,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:40,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:40,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:40,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:40,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:40,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:40,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:25:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:40,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:40,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:40,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-21 12:25:40,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:40,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 570 [2020-09-21 12:25:40,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:40,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-21 12:25:40,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:25:40,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-21 12:25:40,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:41,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:41,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:41,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:41,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-21 12:25:41,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:41,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-21 12:25:41,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:41,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-21 12:25:41,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:41,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-21 12:25:41,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:41,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:41,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:42,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:42,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-21 12:25:42,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:42,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 799 [2020-09-21 12:25:42,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:42,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-21 12:25:42,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:42,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-21 12:25:42,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0