/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_25-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:22:19,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:22:19,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:22:19,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:22:19,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:22:19,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:22:19,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:22:19,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:22:19,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:22:19,659 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:22:19,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:22:19,661 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:22:19,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:22:19,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:22:19,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:22:19,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:22:19,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:22:19,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:22:19,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:22:19,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:22:19,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:22:19,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:22:19,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:22:19,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:22:19,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:22:19,698 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:22:19,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:22:19,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:22:19,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:22:19,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:22:19,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:22:19,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:22:19,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:22:19,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:22:19,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:22:19,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:22:19,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:22:19,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:22:19,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:22:19,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:22:19,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:22:19,714 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:22:19,759 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:22:19,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:22:19,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:22:19,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:22:19,762 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:22:19,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:22:19,762 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:22:19,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:22:19,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:22:19,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:22:19,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:22:19,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:22:19,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:22:19,765 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:22:19,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:22:19,765 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:22:19,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:22:19,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:22:19,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:22:19,766 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:22:19,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:22:19,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:22:19,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:22:19,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:22:19,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:22:19,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:22:19,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:22:19,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:22:19,768 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:22:19,768 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:22:20,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:22:20,235 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:22:20,242 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:22:20,244 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:22:20,245 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:22:20,246 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_25-2.c [2020-09-25 13:22:20,341 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45c3f03bc/06bc91e968ee417582178966669a598d/FLAG60982ea54 [2020-09-25 13:22:20,880 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:22:20,881 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_25-2.c [2020-09-25 13:22:20,890 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45c3f03bc/06bc91e968ee417582178966669a598d/FLAG60982ea54 [2020-09-25 13:22:21,238 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45c3f03bc/06bc91e968ee417582178966669a598d [2020-09-25 13:22:21,254 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:22:21,262 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:22:21,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:22:21,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:22:21,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:22:21,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:22:21" (1/1) ... [2020-09-25 13:22:21,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b22a6b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:21, skipping insertion in model container [2020-09-25 13:22:21,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:22:21" (1/1) ... [2020-09-25 13:22:21,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:22:21,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:22:21,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:22:21,533 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:22:21,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:22:21,563 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:22:21,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:21 WrapperNode [2020-09-25 13:22:21,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:22:21,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:22:21,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:22:21,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:22:21,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:21" (1/1) ... [2020-09-25 13:22:21,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:21" (1/1) ... [2020-09-25 13:22:21,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:21" (1/1) ... [2020-09-25 13:22:21,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:21" (1/1) ... [2020-09-25 13:22:21,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:21" (1/1) ... [2020-09-25 13:22:21,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:21" (1/1) ... [2020-09-25 13:22:21,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:21" (1/1) ... [2020-09-25 13:22:21,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:22:21,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:22:21,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:22:21,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:22:21,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:22:21,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:22:21,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:22:21,757 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 13:22:21,757 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:22:21,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:22:21,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:22:21,757 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 13:22:21,758 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:22:21,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:22:21,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:22:21,970 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:22:21,970 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 13:22:21,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:22:21 BoogieIcfgContainer [2020-09-25 13:22:21,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:22:21,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:22:21,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:22:21,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:22:21,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:22:21" (1/3) ... [2020-09-25 13:22:22,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd90df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:22:22, skipping insertion in model container [2020-09-25 13:22:22,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:21" (2/3) ... [2020-09-25 13:22:22,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd90df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:22:22, skipping insertion in model container [2020-09-25 13:22:22,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:22:21" (3/3) ... [2020-09-25 13:22:22,010 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_25-2.c [2020-09-25 13:22:22,039 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:22:22,050 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:22:22,085 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:22:22,113 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:22:22,113 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:22:22,114 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:22:22,114 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:22:22,114 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:22:22,114 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:22:22,115 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:22:22,115 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:22:22,134 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 13:22:22,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 13:22:22,141 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:22,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:22,143 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:22,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:22,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 13:22:22,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:22,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546631830] [2020-09-25 13:22:22,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:22,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:22,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:22,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:22:22,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:22,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 13:22:22,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:22,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:22,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:22,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:22:22,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:22:22,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:22:22,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:22,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:22,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:22,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:22,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:22,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:22,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:22,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:22,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:22,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:22,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:22,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:22,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:22,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:22,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:22,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:22,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:22,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 13:22:22,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:22,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:22,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:22,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:22,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:22:22,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:22,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:22:22,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546631830] [2020-09-25 13:22:22,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:22:22,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:22:22,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244748767] [2020-09-25 13:22:22,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:22:22,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:22,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:22:22,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:22:22,534 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 13:22:22,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:22,654 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 13:22:22,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:22:22,656 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 13:22:22,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:22,669 INFO L225 Difference]: With dead ends: 44 [2020-09-25 13:22:22,670 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 13:22:22,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:22:22,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 13:22:22,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 13:22:22,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 13:22:22,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 13:22:22,729 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 13:22:22,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:22,729 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 13:22:22,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:22:22,730 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 13:22:22,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 13:22:22,732 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:22,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:22,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:22:22,733 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:22,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:22,734 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 13:22:22,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:22,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070733998] [2020-09-25 13:22:22,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:22,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:22,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:22,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:22:22,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:22,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 13:22:22,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:22,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:22,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:22,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:22:22,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:22:22,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:22,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:22,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:22,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:22,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:22,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:22,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:22,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:22:22,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:22,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:22,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:22,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:22,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:22,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:22,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:22,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:22,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:22,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:22,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:22,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 13:22:22,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:22,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:22,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:22,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:22:22,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070733998] [2020-09-25 13:22:22,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:22:22,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:22:22,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468526862] [2020-09-25 13:22:22,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:22:22,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:22,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:22:22,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:22:22,934 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 13:22:23,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:23,005 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 13:22:23,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:22:23,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 13:22:23,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:23,007 INFO L225 Difference]: With dead ends: 36 [2020-09-25 13:22:23,007 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 13:22:23,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:22:23,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 13:22:23,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 13:22:23,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 13:22:23,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 13:22:23,017 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 13:22:23,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:23,018 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 13:22:23,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:22:23,018 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 13:22:23,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 13:22:23,020 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:23,020 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:23,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:22:23,021 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:23,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:23,021 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 13:22:23,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:23,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423454122] [2020-09-25 13:22:23,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:23,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:23,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:23,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:23,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:23,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 13:22:23,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:22:23,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 624 [2020-09-25 13:22:23,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:23,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:23,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:23,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:22:23,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 13:22:23,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:22:23,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:23,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:23,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:23,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:23,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:23,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:22:23,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:23,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:23,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:23,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:23,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:23,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:23,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:23,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:23,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:23,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:23,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:23,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:23,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:22:23,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:22:23,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-09-25 13:22:23,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:23,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:23,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:23,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:23,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:22:23,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:24,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:24,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:24,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:24,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:24,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:24,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:22:24,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:24,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:24,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:24,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:24,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:22:24,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:22:24,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:22:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:24,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:24,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:24,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:24,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:24,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:22:24,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:24,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:24,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:24,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:24,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:24,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:24,098 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 13:22:24,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423454122] [2020-09-25 13:22:24,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:24,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:22:24,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676534288] [2020-09-25 13:22:24,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:22:24,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:24,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:22:24,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:22:24,104 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-09-25 13:22:24,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:24,206 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-09-25 13:22:24,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:22:24,207 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-25 13:22:24,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:24,209 INFO L225 Difference]: With dead ends: 44 [2020-09-25 13:22:24,209 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 13:22:24,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:22:24,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 13:22:24,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-09-25 13:22:24,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 13:22:24,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-25 13:22:24,221 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-25 13:22:24,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:24,221 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-25 13:22:24,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:22:24,221 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-25 13:22:24,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 13:22:24,223 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:24,224 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:24,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:22:24,224 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:24,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:24,225 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 13:22:24,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:24,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409422465] [2020-09-25 13:22:24,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:24,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:24,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:24,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:24,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:24,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:24,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 13:22:24,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:22:24,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 588 [2020-09-25 13:22:24,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:24,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:24,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:24,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:22:24,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 13:22:24,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:24,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:24,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:24,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:24,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:24,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:24,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:22:24,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:24,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:24,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:24,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:24,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:24,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:24,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:24,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:24,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:24,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:25,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:25,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:25,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:22:25,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:22:25,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 448 [2020-09-25 13:22:25,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:25,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:25,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:25,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:25,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:22:25,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:25,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:25,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:25,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:25,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:25,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:25,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 13:22:25,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:25,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:25,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:25,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:25,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:22:25,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:25,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:22:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:25,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:25,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:25,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:25,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:25,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:22:25,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:25,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:25,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:25,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:25,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:25,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:25,412 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 13:22:25,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409422465] [2020-09-25 13:22:25,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:25,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:22:25,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832834212] [2020-09-25 13:22:25,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:22:25,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:25,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:22:25,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:22:25,418 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 6 states. [2020-09-25 13:22:25,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:25,569 INFO L93 Difference]: Finished difference Result 88 states and 137 transitions. [2020-09-25 13:22:25,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:22:25,569 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-25 13:22:25,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:25,573 INFO L225 Difference]: With dead ends: 88 [2020-09-25 13:22:25,573 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 13:22:25,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:22:25,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 13:22:25,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-09-25 13:22:25,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 13:22:25,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 69 transitions. [2020-09-25 13:22:25,590 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 69 transitions. Word has length 35 [2020-09-25 13:22:25,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:25,591 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 69 transitions. [2020-09-25 13:22:25,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:22:25,591 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 69 transitions. [2020-09-25 13:22:25,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 13:22:25,594 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:25,594 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:25,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:22:25,595 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:25,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:25,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 1 times [2020-09-25 13:22:25,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:25,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097349818] [2020-09-25 13:22:25,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:25,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:25,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:25,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:25,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:25,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:25,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:25,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:30,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:30,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 13:22:30,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:22:30,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 13:22:30,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:30,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:30,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:30,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:22:30,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 13:22:30,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:30,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:30,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:30,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:30,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:30,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:30,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:22:30,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:30,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:30,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:30,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:30,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:30,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:22:30,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:30,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:30,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:30,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:30,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:31,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:31,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:31,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:33,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:33,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 13:22:33,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:22:33,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2790 [2020-09-25 13:22:33,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:33,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:33,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:33,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:33,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:22:33,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:33,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:33,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:33,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:33,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:33,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:33,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:22:33,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:33,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 13:22:33,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:33,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:33,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:33,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:33,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:22:33,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:33,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:33,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:33,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:33,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:33,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:33,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:33,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:33,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:33,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:33,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:33,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:33,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:33,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:33,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:22:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:33,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:33,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:33,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:33,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:33,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:33,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:33,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:33,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:33,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:33,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:33,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:33,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:22:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:33,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:33,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:33,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:33,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:33,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:22:33,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:33,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:33,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:33,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:33,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:22:33,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:33,703 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 13:22:33,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097349818] [2020-09-25 13:22:33,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:33,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:22:33,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977104122] [2020-09-25 13:22:33,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:22:33,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:33,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:22:33,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:22:33,706 INFO L87 Difference]: Start difference. First operand 50 states and 69 transitions. Second operand 7 states. [2020-09-25 13:22:33,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:33,798 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2020-09-25 13:22:33,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:22:33,799 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 13:22:33,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:33,802 INFO L225 Difference]: With dead ends: 76 [2020-09-25 13:22:33,802 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 13:22:33,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:22:33,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 13:22:33,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 58. [2020-09-25 13:22:33,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 13:22:33,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 81 transitions. [2020-09-25 13:22:33,817 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 81 transitions. Word has length 51 [2020-09-25 13:22:33,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:33,817 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 81 transitions. [2020-09-25 13:22:33,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:22:33,818 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 81 transitions. [2020-09-25 13:22:33,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 13:22:33,821 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:33,821 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:33,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:22:33,822 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:33,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:33,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1086233509, now seen corresponding path program 2 times [2020-09-25 13:22:33,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:33,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406706080] [2020-09-25 13:22:33,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:33,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:33,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:33,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:33,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:33,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:34,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:36,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:36,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:36,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:36,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:38,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:38,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:38,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:38,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:38,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 13:22:38,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 13:22:38,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 13:22:38,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:38,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:38,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:22:38,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:22:38,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 13:22:38,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:38,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:38,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:38,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:38,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:38,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:38,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:22:38,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:38,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:38,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:38,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:38,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:38,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:38,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:38,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:38,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:38,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:38,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:38,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:39,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:39,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:40,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:40,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:41,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:41,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:41,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:41,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:41,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:43,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:43,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 13:22:43,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 13:22:43,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:22:43,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:43,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:43,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:22:43,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:22:43,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 13:22:43,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:43,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:43,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:43,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:43,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:44,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:44,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:22:44,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:22:44,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 13:22:44,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:44,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:44,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:44,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:44,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:22:44,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:44,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:44,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:44,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:44,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:44,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:44,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:22:44,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:44,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:44,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:44,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:44,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:22:44,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:44,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:22:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:44,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:44,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:44,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:44,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:44,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:22:44,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:44,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:44,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:44,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:44,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:44,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:44,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:22:44,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:44,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:44,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:44,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:44,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:44,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:44,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:44,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:44,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:46,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:46,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 13:22:46,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:22:46,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2372 [2020-09-25 13:22:46,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:46,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:46,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:46,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:46,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:22:46,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:46,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:46,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:46,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:46,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:46,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:22:46,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:46,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 13:22:46,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:46,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:46,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:46,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:46,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:22:46,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:46,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:46,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:46,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:46,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:46,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:46,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:46,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:46,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:46,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:46,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:46,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:46,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:46,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:22:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:46,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:46,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:46,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:46,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:46,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:46,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:46,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:46,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:46,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:46,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:46,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:46,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:22:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:46,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:46,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:46,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:46,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:46,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:22:46,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:46,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:46,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:46,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:46,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:46,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:46,714 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 60 proven. 63 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-09-25 13:22:46,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406706080] [2020-09-25 13:22:46,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:46,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:22:46,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103959232] [2020-09-25 13:22:46,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:22:46,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:46,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:22:46,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:22:46,718 INFO L87 Difference]: Start difference. First operand 58 states and 81 transitions. Second operand 10 states. [2020-09-25 13:22:47,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:47,013 INFO L93 Difference]: Finished difference Result 125 states and 194 transitions. [2020-09-25 13:22:47,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:22:47,014 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-09-25 13:22:47,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:47,017 INFO L225 Difference]: With dead ends: 125 [2020-09-25 13:22:47,017 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 13:22:47,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:22:47,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 13:22:47,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 13:22:47,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 13:22:47,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-09-25 13:22:47,032 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 85 [2020-09-25 13:22:47,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:47,032 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-09-25 13:22:47,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:22:47,033 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-09-25 13:22:47,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 13:22:47,037 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:47,037 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:47,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:22:47,038 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:47,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:47,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 3 times [2020-09-25 13:22:47,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:47,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120456288] [2020-09-25 13:22:47,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:47,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:47,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:47,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:47,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:47,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:47,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:47,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:47,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:48,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:49,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:49,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:52,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:52,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 13:22:52,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 13:22:52,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 13:22:52,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:52,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:52,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 13:22:52,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 13:22:52,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 13:22:52,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:52,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:52,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:52,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:52,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:52,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:52,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:22:52,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:52,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:52,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:52,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:52,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:52,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:52,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:52,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:52,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:52,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:52,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:52,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:52,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:54,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:54,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:54,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:54,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:54,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:54,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:54,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:54,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:54,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:55,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:55,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:55,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:55,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:57,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:57,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 13:22:57,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-09-25 13:22:57,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:22:57,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:57,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:57,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:22:57,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 13:22:57,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 13:22:57,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:57,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:57,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:57,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:57,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 13:22:57,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:57,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:22:57,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:57,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:57,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:57,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:57,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:57,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:57,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:57,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:57,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:57,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:22:57,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:57,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:22:57,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:57,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:57,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:57,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:57,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:57,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:57,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:57,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:57,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:57,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:57,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:57,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:57,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:57,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:57,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:57,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:57,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:57,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:57,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:22:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:57,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:57,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:57,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:57,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:57,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:57,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:57,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:57,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:57,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:57,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:57,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:57,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:22:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:57,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:57,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:57,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:57,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:57,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:22:57,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:57,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:57,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:57,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:57,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:57,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:57,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 13:22:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:57,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:57,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:57,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:57,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:57,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:59,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:59,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 13:22:59,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:22:59,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1976 [2020-09-25 13:22:59,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:59,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:59,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:22:59,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:22:59,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 13:22:59,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:59,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:59,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:59,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:59,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:59,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:59,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:59,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:02,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:02,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 13:23:02,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:23:02,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3576 [2020-09-25 13:23:02,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:02,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:02,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:02,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:02,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 13:23:02,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:02,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:02,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:02,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:02,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:23:02,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:02,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:23:02,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:02,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:02,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:02,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:02,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:23:02,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:02,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:02,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:02,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:02,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:02,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:02,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:02,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:02,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:02,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:02,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:02,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:02,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:02,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:23:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:02,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:02,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:02,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:02,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:02,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:23:02,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:02,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:02,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:02,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:02,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:02,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:02,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:23:02,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:02,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:02,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:02,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:02,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:02,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:02,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:23:02,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:02,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:02,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:02,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:02,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:23:02,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:02,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 13:23:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:02,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:02,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:02,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:02,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:02,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:23:02,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:02,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:02,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:02,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:02,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:02,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:02,947 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 213 proven. 19 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2020-09-25 13:23:02,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120456288] [2020-09-25 13:23:02,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:02,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:23:02,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047305844] [2020-09-25 13:23:02,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:23:02,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:02,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:23:02,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:23:02,949 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 9 states. [2020-09-25 13:23:03,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:03,190 INFO L93 Difference]: Finished difference Result 101 states and 128 transitions. [2020-09-25 13:23:03,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 13:23:03,192 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 123 [2020-09-25 13:23:03,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:03,193 INFO L225 Difference]: With dead ends: 101 [2020-09-25 13:23:03,193 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 13:23:03,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:23:03,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 13:23:03,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-25 13:23:03,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-25 13:23:03,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2020-09-25 13:23:03,210 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 123 [2020-09-25 13:23:03,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:03,213 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2020-09-25 13:23:03,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:23:03,213 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2020-09-25 13:23:03,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 13:23:03,216 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:03,216 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:03,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:23:03,216 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:03,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:03,217 INFO L82 PathProgramCache]: Analyzing trace with hash 62566115, now seen corresponding path program 4 times [2020-09-25 13:23:03,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:03,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115098024] [2020-09-25 13:23:03,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:03,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:03,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:03,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:03,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:03,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:03,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:04,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:05,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:06,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:08,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:08,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 13:23:08,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:23:08,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 13:23:08,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:08,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:08,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:23:08,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:08,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 13:23:08,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:08,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:08,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:08,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:08,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:08,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:08,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:23:08,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:08,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:08,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:08,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:08,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:08,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:08,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:08,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:08,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:08,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:08,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:08,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:08,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:08,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:09,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:11,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:11,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:11,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:12,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:12,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:12,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:12,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:12,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:13,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:13,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 13:23:13,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 13:23:13,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 13:23:13,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:13,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:13,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:13,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:13,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-25 13:23:13,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:13,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:13,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:13,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:13,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:13,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:14,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 13:23:14,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:23:14,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 929 [2020-09-25 13:23:14,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:14,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:14,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:23:14,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:14,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 13:23:14,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:14,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:14,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:14,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:23:14,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:14,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:23:14,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:14,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:14,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:14,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:14,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:23:14,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:14,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:14,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:14,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:14,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:14,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:14,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:14,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:14,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:14,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:14,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:14,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:14,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:23:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:14,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:14,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:14,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:14,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:14,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:14,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:14,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:14,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:14,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:14,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:14,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:23:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:14,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:14,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:14,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:14,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:23:14,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:14,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:14,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:14,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:14,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:23:14,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:14,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 13:23:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:14,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking...