/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/recursive-simple/fibo_5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 22:36:30,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 22:36:30,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 22:36:30,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 22:36:30,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 22:36:30,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 22:36:30,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 22:36:30,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 22:36:30,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 22:36:30,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 22:36:30,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 22:36:30,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 22:36:30,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 22:36:30,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 22:36:30,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 22:36:30,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 22:36:30,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 22:36:30,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 22:36:30,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 22:36:30,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 22:36:30,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 22:36:30,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 22:36:30,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 22:36:30,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 22:36:30,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 22:36:30,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 22:36:30,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 22:36:30,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 22:36:30,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 22:36:30,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 22:36:30,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 22:36:30,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 22:36:30,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 22:36:30,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 22:36:30,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 22:36:30,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 22:36:30,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 22:36:30,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 22:36:30,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 22:36:30,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 22:36:30,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 22:36:30,753 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 [2020-10-27 22:36:30,782 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 22:36:30,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 22:36:30,784 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 22:36:30,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 22:36:30,785 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 22:36:30,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 22:36:30,786 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 22:36:30,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 22:36:30,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 22:36:30,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 22:36:30,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 22:36:30,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 22:36:30,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 22:36:30,788 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 22:36:30,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 22:36:30,788 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 22:36:30,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 22:36:30,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 22:36:30,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 22:36:30,789 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 22:36:30,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 22:36:30,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 22:36:30,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 22:36:30,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 22:36:30,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 22:36:30,791 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 22:36:30,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 22:36:30,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 22:36:30,792 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 22:36:30,792 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 22:36:31,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 22:36:31,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 22:36:31,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 22:36:31,188 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 22:36:31,189 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 22:36:31,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_5-2.c [2020-10-27 22:36:31,276 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f06a815b6/0dcce7c9a0be4ecda8f0d681f5652a32/FLAGa0abea834 [2020-10-27 22:36:31,920 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 22:36:31,921 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_5-2.c [2020-10-27 22:36:31,930 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f06a815b6/0dcce7c9a0be4ecda8f0d681f5652a32/FLAGa0abea834 [2020-10-27 22:36:32,315 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f06a815b6/0dcce7c9a0be4ecda8f0d681f5652a32 [2020-10-27 22:36:32,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 22:36:32,328 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 22:36:32,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 22:36:32,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 22:36:32,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 22:36:32,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:36:32" (1/1) ... [2020-10-27 22:36:32,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@524fded9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:36:32, skipping insertion in model container [2020-10-27 22:36:32,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:36:32" (1/1) ... [2020-10-27 22:36:32,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 22:36:32,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 22:36:32,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:36:32,543 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 22:36:32,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:36:32,582 INFO L208 MainTranslator]: Completed translation [2020-10-27 22:36:32,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:36:32 WrapperNode [2020-10-27 22:36:32,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 22:36:32,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 22:36:32,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 22:36:32,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 22:36:32,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:36:32" (1/1) ... [2020-10-27 22:36:32,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:36:32" (1/1) ... [2020-10-27 22:36:32,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:36:32" (1/1) ... [2020-10-27 22:36:32,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:36:32" (1/1) ... [2020-10-27 22:36:32,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:36:32" (1/1) ... [2020-10-27 22:36:32,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:36:32" (1/1) ... [2020-10-27 22:36:32,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:36:32" (1/1) ... [2020-10-27 22:36:32,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 22:36:32,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 22:36:32,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 22:36:32,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 22:36:32,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:36:32" (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 [2020-10-27 22:36:32,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 22:36:32,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 22:36:32,707 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 22:36:32,707 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-10-27 22:36:32,707 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 22:36:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 22:36:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 22:36:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 22:36:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 22:36:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 22:36:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-10-27 22:36:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 22:36:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 22:36:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 22:36:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 22:36:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 22:36:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 22:36:32,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 22:36:32,968 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 22:36:32,969 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 22:36:32,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:36:32 BoogieIcfgContainer [2020-10-27 22:36:32,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 22:36:32,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 22:36:32,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 22:36:32,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 22:36:32,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 10:36:32" (1/3) ... [2020-10-27 22:36:32,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b506a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:36:32, skipping insertion in model container [2020-10-27 22:36:32,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:36:32" (2/3) ... [2020-10-27 22:36:32,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b506a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:36:32, skipping insertion in model container [2020-10-27 22:36:32,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:36:32" (3/3) ... [2020-10-27 22:36:32,980 INFO L111 eAbstractionObserver]: Analyzing ICFG fibo_5-2.c [2020-10-27 22:36:32,992 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 22:36:32,997 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 22:36:33,011 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 22:36:33,038 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 22:36:33,038 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 22:36:33,038 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 22:36:33,038 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 22:36:33,038 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 22:36:33,038 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 22:36:33,038 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 22:36:33,039 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 22:36:33,056 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-27 22:36:33,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 22:36:33,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:36:33,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:36:33,063 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:36:33,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:36:33,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1708859500, now seen corresponding path program 1 times [2020-10-27 22:36:33,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:36:33,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888440734] [2020-10-27 22:36:33,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:36:33,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:33,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:33,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:33,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:33,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:36:33,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:36:33,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 706 [2020-10-27 22:36:33,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:33,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:36:33,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:36:33,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:36:33,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 22:36:34,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:36:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:34,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:34,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:34,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:36:34,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:36:34,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:36:34,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:34,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:36:34,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:34,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:36:34,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:36:34,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:36:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:34,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:34,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:34,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:36:34,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:36:34,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:36:34,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:34,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:36:34,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:34,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:36:34,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:34,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:36:34,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888440734] [2020-10-27 22:36:34,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:36:34,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 22:36:34,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629621197] [2020-10-27 22:36:34,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 22:36:34,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:36:34,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 22:36:34,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 22:36:34,121 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 6 states. [2020-10-27 22:36:34,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:36:34,428 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2020-10-27 22:36:34,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 22:36:34,430 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-27 22:36:34,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:36:34,440 INFO L225 Difference]: With dead ends: 44 [2020-10-27 22:36:34,440 INFO L226 Difference]: Without dead ends: 23 [2020-10-27 22:36:34,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:36:34,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-27 22:36:34,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-27 22:36:34,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-27 22:36:34,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-10-27 22:36:34,493 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 15 [2020-10-27 22:36:34,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:36:34,494 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-10-27 22:36:34,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 22:36:34,494 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-10-27 22:36:34,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 22:36:34,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:36:34,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:36:34,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 22:36:34,497 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:36:34,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:36:34,498 INFO L82 PathProgramCache]: Analyzing trace with hash 2119969838, now seen corresponding path program 1 times [2020-10-27 22:36:34,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:36:34,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764932722] [2020-10-27 22:36:34,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:36:34,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:34,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:34,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:34,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:34,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 22:36:34,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:36:34,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-27 22:36:34,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:34,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:36:34,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 22:36:34,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:36:34,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:34,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:36:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:34,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:34,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:34,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:36:34,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:36:34,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:36:34,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:34,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:36:34,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:34,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:36:34,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:34,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:36:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:34,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:34,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:34,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:36:34,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:36:34,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:36:34,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:34,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:36:34,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:34,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:36:34,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:34,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:36:34,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764932722] [2020-10-27 22:36:34,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:36:34,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 22:36:34,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988238053] [2020-10-27 22:36:34,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 22:36:34,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:36:34,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 22:36:34,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 22:36:34,855 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 6 states. [2020-10-27 22:36:35,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:36:35,062 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2020-10-27 22:36:35,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 22:36:35,063 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-27 22:36:35,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:36:35,065 INFO L225 Difference]: With dead ends: 30 [2020-10-27 22:36:35,065 INFO L226 Difference]: Without dead ends: 25 [2020-10-27 22:36:35,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:36:35,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-27 22:36:35,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-10-27 22:36:35,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-27 22:36:35,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-10-27 22:36:35,076 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2020-10-27 22:36:35,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:36:35,077 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-10-27 22:36:35,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 22:36:35,077 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-10-27 22:36:35,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 22:36:35,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:36:35,079 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:36:35,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 22:36:35,079 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:36:35,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:36:35,080 INFO L82 PathProgramCache]: Analyzing trace with hash -308126725, now seen corresponding path program 1 times [2020-10-27 22:36:35,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:36:35,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857607453] [2020-10-27 22:36:35,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:36:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:35,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:35,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:35,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:35,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:37,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:37,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 22:36:37,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:36:37,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2495 [2020-10-27 22:36:37,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:37,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:36:37,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 22:36:37,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:36:37,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:37,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:36:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:37,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:37,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:37,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:36:37,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:36:37,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:36:37,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:37,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:36:37,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:37,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:36:37,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:37,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:36:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:37,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:37,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:37,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:37,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 22:36:37,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:36:37,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-27 22:36:37,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:37,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:36:37,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:36:37,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:36:37,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:37,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:36:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:37,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:37,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:37,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:36:37,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:36:37,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:36:37,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:37,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:36:37,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:36:37,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:36:37,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:37,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:36:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:37,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:37,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:37,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:36:37,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:36:37,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:36:37,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:37,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:36:37,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 22:36:37,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:36:37,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:37,846 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 22:36:37,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857607453] [2020-10-27 22:36:37,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:36:37,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 22:36:37,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361795921] [2020-10-27 22:36:37,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:36:37,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:36:37,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:36:37,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:36:37,850 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 9 states. [2020-10-27 22:36:38,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:36:38,193 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2020-10-27 22:36:38,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 22:36:38,194 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-10-27 22:36:38,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:36:38,196 INFO L225 Difference]: With dead ends: 41 [2020-10-27 22:36:38,196 INFO L226 Difference]: Without dead ends: 25 [2020-10-27 22:36:38,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:36:38,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-27 22:36:38,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-27 22:36:38,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-27 22:36:38,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-10-27 22:36:38,207 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 28 [2020-10-27 22:36:38,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:36:38,207 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-10-27 22:36:38,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:36:38,208 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-10-27 22:36:38,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-27 22:36:38,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:36:38,209 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:36:38,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 22:36:38,210 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:36:38,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:36:38,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1144313053, now seen corresponding path program 1 times [2020-10-27 22:36:38,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:36:38,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387933794] [2020-10-27 22:36:38,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:36:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:38,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:38,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:38,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:39,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:39,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 22:36:39,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:36:39,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1132 [2020-10-27 22:36:39,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:39,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:36:39,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 22:36:39,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:36:39,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:39,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:36:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:39,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:39,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:39,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:36:39,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:36:39,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:36:39,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:39,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:36:39,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:39,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:36:39,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:39,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:36:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:39,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:39,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:39,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 22:36:39,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:36:39,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 22:36:39,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:39,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:36:39,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:39,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 22:36:39,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:39,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:36:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:39,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:39,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:39,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:36:39,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:36:39,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:36:39,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:39,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:36:39,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:39,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:36:39,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:39,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:36:39,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:39,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:39,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:39,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:36:39,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:36:39,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:36:39,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:39,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:36:39,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:39,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:36:39,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:39,557 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 22:36:39,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387933794] [2020-10-27 22:36:39,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:36:39,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 22:36:39,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559412719] [2020-10-27 22:36:39,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:36:39,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:36:39,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:36:39,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:36:39,562 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 9 states. [2020-10-27 22:36:39,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:36:39,953 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2020-10-27 22:36:39,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 22:36:39,954 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-27 22:36:39,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:36:39,956 INFO L225 Difference]: With dead ends: 36 [2020-10-27 22:36:39,956 INFO L226 Difference]: Without dead ends: 31 [2020-10-27 22:36:39,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-10-27 22:36:39,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-27 22:36:39,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2020-10-27 22:36:39,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-27 22:36:39,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2020-10-27 22:36:39,972 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 29 [2020-10-27 22:36:39,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:36:39,973 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2020-10-27 22:36:39,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:36:39,973 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2020-10-27 22:36:39,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-27 22:36:39,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:36:39,977 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:36:39,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 22:36:39,978 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:36:39,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:36:39,979 INFO L82 PathProgramCache]: Analyzing trace with hash 977084561, now seen corresponding path program 1 times [2020-10-27 22:36:39,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:36:39,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151565488] [2020-10-27 22:36:39,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:36:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:40,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:40,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:40,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:40,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:40,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:41,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:41,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 22:36:41,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:36:41,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1673 [2020-10-27 22:36:41,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:41,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:36:41,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 22:36:41,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 22:36:41,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:41,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:36:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:41,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:41,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:41,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:36:41,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:36:41,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:36:41,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:41,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:36:41,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:41,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:36:41,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:41,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:36:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:41,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:41,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:41,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:41,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:41,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 22:36:41,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:36:41,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-27 22:36:41,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:41,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:36:41,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 22:36:41,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:36:41,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:41,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:36:41,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:41,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:41,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:41,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:36:41,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:36:41,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:36:41,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:41,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:36:41,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:41,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:36:41,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:41,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:36:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:42,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:42,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:42,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:42,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:36:42,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:36:42,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:36:42,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:42,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:36:42,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:36:42,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:36:42,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:42,070 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 22:36:42,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151565488] [2020-10-27 22:36:42,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:36:42,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 22:36:42,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232296416] [2020-10-27 22:36:42,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:36:42,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:36:42,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:36:42,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:36:42,075 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 10 states. [2020-10-27 22:36:42,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:36:42,603 INFO L93 Difference]: Finished difference Result 59 states and 86 transitions. [2020-10-27 22:36:42,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 22:36:42,605 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-10-27 22:36:42,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:36:42,607 INFO L225 Difference]: With dead ends: 59 [2020-10-27 22:36:42,607 INFO L226 Difference]: Without dead ends: 37 [2020-10-27 22:36:42,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-27 22:36:42,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-27 22:36:42,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2020-10-27 22:36:42,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-27 22:36:42,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2020-10-27 22:36:42,631 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 30 [2020-10-27 22:36:42,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:36:42,631 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2020-10-27 22:36:42,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:36:42,632 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2020-10-27 22:36:42,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 22:36:42,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:36:42,636 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:36:42,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 22:36:42,636 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:36:42,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:36:42,637 INFO L82 PathProgramCache]: Analyzing trace with hash -53636892, now seen corresponding path program 2 times [2020-10-27 22:36:42,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:36:42,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161736213] [2020-10-27 22:36:42,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:36:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:42,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:42,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:42,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:43,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:45,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:45,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 22:36:45,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:36:45,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2893 [2020-10-27 22:36:45,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:45,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 22:36:45,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 22:36:45,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:36:45,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:45,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:36:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:45,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:45,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:45,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:36:45,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:36:45,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:36:45,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:45,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:36:45,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:45,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:36:45,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:36:45,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:36:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:45,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:45,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:45,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 22:36:45,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:36:45,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-27 22:36:45,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:45,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:36:45,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:45,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 22:36:45,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 22:36:45,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:36:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:45,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:45,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:45,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 22:36:45,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:36:45,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 22:36:45,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:45,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:36:45,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:45,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 22:36:45,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:45,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:36:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:45,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:45,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:45,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:36:45,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:36:45,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:36:45,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:45,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:36:45,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:45,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:36:45,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:45,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:36:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:45,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:45,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:45,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:36:45,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:36:45,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:36:45,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:45,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:36:45,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:45,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:36:45,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:45,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:36:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:45,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:45,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:45,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:36:45,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:36:45,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:36:45,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:45,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:36:45,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:45,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:36:45,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:45,941 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-27 22:36:45,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161736213] [2020-10-27 22:36:45,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:36:45,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 22:36:45,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381130326] [2020-10-27 22:36:45,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 22:36:45,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:36:45,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 22:36:45,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:36:45,947 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand 13 states. [2020-10-27 22:36:46,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:36:46,398 INFO L93 Difference]: Finished difference Result 43 states and 55 transitions. [2020-10-27 22:36:46,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 22:36:46,399 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2020-10-27 22:36:46,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:36:46,401 INFO L225 Difference]: With dead ends: 43 [2020-10-27 22:36:46,401 INFO L226 Difference]: Without dead ends: 38 [2020-10-27 22:36:46,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2020-10-27 22:36:46,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-27 22:36:46,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-27 22:36:46,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-27 22:36:46,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2020-10-27 22:36:46,424 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 49 transitions. Word has length 43 [2020-10-27 22:36:46,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:36:46,427 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 49 transitions. [2020-10-27 22:36:46,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 22:36:46,427 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 49 transitions. [2020-10-27 22:36:46,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 22:36:46,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:36:46,431 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:36:46,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 22:36:46,434 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:36:46,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:36:46,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1305406542, now seen corresponding path program 3 times [2020-10-27 22:36:46,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:36:46,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573317583] [2020-10-27 22:36:46,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:36:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:46,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:46,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:46,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:46,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:46,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:46,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:46,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:46,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:47,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:47,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:47,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:47,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:51,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:51,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 22:36:51,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 22:36:51,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 22:36:51,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:51,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:36:51,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 22:36:51,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 22:36:51,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:51,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:36:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:51,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:51,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:51,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:36:51,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:36:51,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:36:51,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:51,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:36:51,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:51,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:36:51,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:51,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:36:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:51,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:51,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:51,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:51,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:51,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:51,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:51,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:52,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:52,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:52,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:53,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:53,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:53,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:54,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:54,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:56,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:56,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 22:36:56,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 22:36:56,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 22:36:56,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:56,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:36:56,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 22:36:56,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 22:36:56,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:56,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:36:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:56,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:56,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:56,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:56,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 22:36:56,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:36:56,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 22:36:56,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:56,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:36:56,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:56,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 22:36:56,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:56,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:36:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:56,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:56,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:56,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:36:56,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:36:56,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:36:56,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:56,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:36:56,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:56,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:36:56,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:56,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:36:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:56,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:56,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:56,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:36:56,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:36:56,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:36:56,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:56,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:36:56,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:56,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:36:56,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:56,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:36:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:56,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:56,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:56,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:56,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:56,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:56,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:57,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:57,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 22:36:57,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:36:57,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 836 [2020-10-27 22:36:57,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:57,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:36:57,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:36:57,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 22:36:57,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:57,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:36:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:57,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:57,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:57,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:57,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:57,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 22:36:57,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:36:57,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-27 22:36:57,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:57,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:36:57,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:57,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 22:36:57,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:57,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:36:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:57,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:57,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:57,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:36:57,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:36:57,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:36:57,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:57,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:36:57,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:57,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:36:57,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:57,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:36:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:57,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:57,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:57,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:36:57,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:36:57,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:36:57,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:57,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:36:57,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:57,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:36:57,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:57,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:36:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:57,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:57,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:36:57,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:36:57,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:36:57,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:36:57,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:36:57,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:36:57,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:36:57,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:36:57,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:36:57,925 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 55 proven. 73 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-10-27 22:36:57,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573317583] [2020-10-27 22:36:57,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:36:57,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 22:36:57,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850372932] [2020-10-27 22:36:57,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 22:36:57,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:36:57,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 22:36:57,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:36:57,930 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand 13 states. [2020-10-27 22:36:58,465 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2020-10-27 22:36:58,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:36:58,992 INFO L93 Difference]: Finished difference Result 73 states and 107 transitions. [2020-10-27 22:36:58,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 22:36:58,993 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 70 [2020-10-27 22:36:58,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:36:58,995 INFO L225 Difference]: With dead ends: 73 [2020-10-27 22:36:58,995 INFO L226 Difference]: Without dead ends: 43 [2020-10-27 22:36:58,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2020-10-27 22:36:58,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-27 22:36:59,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2020-10-27 22:36:59,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-27 22:36:59,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-10-27 22:36:59,007 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 70 [2020-10-27 22:36:59,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:36:59,008 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-10-27 22:36:59,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 22:36:59,008 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-10-27 22:36:59,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 22:36:59,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:36:59,010 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:36:59,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 22:36:59,010 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:36:59,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:36:59,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1100037757, now seen corresponding path program 4 times [2020-10-27 22:36:59,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:36:59,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793891207] [2020-10-27 22:36:59,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:36:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:36:59,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:59,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:59,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:59,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:59,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:59,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:59,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:36:59,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:01,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:01,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:01,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:04,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:04,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 22:37:04,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 22:37:04,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 22:37:04,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:04,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:37:04,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 22:37:04,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 22:37:04,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:04,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:37:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:04,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:04,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:04,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:37:04,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:04,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:37:04,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:04,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:37:04,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:04,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:37:04,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:04,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:37:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:04,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:04,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:04,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:04,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:04,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:04,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:04,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:09,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:09,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 22:37:09,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:37:09,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 22:37:09,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:09,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:37:09,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 22:37:09,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 22:37:09,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:09,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:37:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:09,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:09,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:09,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:09,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:09,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:09,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:10,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:10,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 22:37:10,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:37:10,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 991 [2020-10-27 22:37:10,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:10,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:37:10,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:10,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 22:37:10,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:10,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:37:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:10,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:10,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:10,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 22:37:10,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:10,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:37:10,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:10,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:37:10,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:10,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 22:37:10,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:10,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:37:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:10,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:10,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:10,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:37:10,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:10,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:37:10,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:10,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:37:10,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:10,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:37:10,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:10,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:37:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:10,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:10,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:10,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:37:10,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:10,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:37:10,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:10,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:37:10,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:10,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:37:10,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:10,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:37:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:10,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:10,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:10,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:10,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:37:10,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:37:10,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:37:10,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:10,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:37:10,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:37:10,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:10,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 22:37:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:10,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:10,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:10,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:37:10,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:10,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:37:10,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:10,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:37:10,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:37:10,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:37:10,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:10,242 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 53 proven. 15 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-27 22:37:10,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793891207] [2020-10-27 22:37:10,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:37:10,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 22:37:10,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51868233] [2020-10-27 22:37:10,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:37:10,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:37:10,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:37:10,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:37:10,249 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 9 states. [2020-10-27 22:37:10,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:37:10,759 INFO L93 Difference]: Finished difference Result 75 states and 94 transitions. [2020-10-27 22:37:10,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 22:37:10,763 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-10-27 22:37:10,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:37:10,764 INFO L225 Difference]: With dead ends: 75 [2020-10-27 22:37:10,764 INFO L226 Difference]: Without dead ends: 42 [2020-10-27 22:37:10,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-10-27 22:37:10,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-27 22:37:10,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-27 22:37:10,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-27 22:37:10,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-10-27 22:37:10,786 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 56 [2020-10-27 22:37:10,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:37:10,787 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-10-27 22:37:10,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:37:10,787 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-10-27 22:37:10,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 22:37:10,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:37:10,791 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:37:10,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 22:37:10,792 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:37:10,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:37:10,792 INFO L82 PathProgramCache]: Analyzing trace with hash 121686187, now seen corresponding path program 5 times [2020-10-27 22:37:10,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:37:10,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119269902] [2020-10-27 22:37:10,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:37:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:10,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:10,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:10,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:10,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:10,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:11,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:11,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:11,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:11,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:15,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:15,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 22:37:15,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 22:37:15,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 22:37:15,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:15,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:37:15,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 22:37:15,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 22:37:15,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:15,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:37:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:15,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:15,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:15,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:37:15,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:15,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:37:15,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:15,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:37:15,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:15,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:37:15,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:15,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:37:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:15,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:15,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:15,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:15,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:15,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:16,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:16,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 22:37:16,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:37:16,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 669 [2020-10-27 22:37:16,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:16,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:37:16,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 22:37:16,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 22:37:16,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:16,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:37:16,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:16,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:16,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:16,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:16,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:16,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:16,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:17,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:17,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 22:37:17,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:37:17,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 801 [2020-10-27 22:37:17,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:17,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:37:17,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:17,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 22:37:17,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:17,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:37:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:17,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:17,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:17,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:17,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:17,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 22:37:17,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:37:17,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 22:37:17,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:17,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:37:17,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:17,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 22:37:17,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:17,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:37:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:17,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:17,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:17,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:37:17,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:17,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:37:17,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:17,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:37:17,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:17,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:37:17,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:17,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:37:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:17,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:17,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:17,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:37:17,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:17,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:37:17,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:17,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:37:17,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:17,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:37:17,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:17,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:37:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:17,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:17,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:17,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:37:17,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:17,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:37:17,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:17,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:37:17,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:17,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:37:17,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:17,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 22:37:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:17,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:17,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:17,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:37:17,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:17,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:37:17,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:17,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:37:17,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:37:17,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:37:17,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:17,573 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 46 proven. 38 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-27 22:37:17,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119269902] [2020-10-27 22:37:17,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:37:17,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 22:37:17,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102815794] [2020-10-27 22:37:17,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 22:37:17,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:37:17,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 22:37:17,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-27 22:37:17,575 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 12 states. [2020-10-27 22:37:18,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:37:18,260 INFO L93 Difference]: Finished difference Result 79 states and 101 transitions. [2020-10-27 22:37:18,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 22:37:18,261 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-10-27 22:37:18,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:37:18,263 INFO L225 Difference]: With dead ends: 79 [2020-10-27 22:37:18,263 INFO L226 Difference]: Without dead ends: 44 [2020-10-27 22:37:18,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-10-27 22:37:18,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-27 22:37:18,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-27 22:37:18,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-27 22:37:18,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-10-27 22:37:18,278 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 57 [2020-10-27 22:37:18,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:37:18,278 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-10-27 22:37:18,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 22:37:18,278 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-10-27 22:37:18,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-27 22:37:18,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:37:18,280 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 9, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:37:18,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 22:37:18,280 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:37:18,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:37:18,280 INFO L82 PathProgramCache]: Analyzing trace with hash -756009077, now seen corresponding path program 6 times [2020-10-27 22:37:18,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:37:18,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999747764] [2020-10-27 22:37:18,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:37:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:18,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:18,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:18,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:18,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:18,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:18,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:18,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:18,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:18,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:18,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:18,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:18,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:18,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:19,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:19,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:19,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:20,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:21,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:21,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:23,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:23,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 22:37:23,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-27 22:37:23,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 22:37:23,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:23,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:37:23,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 22:37:23,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 22:37:23,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:23,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:37:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:23,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:23,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:23,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:37:23,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:23,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:37:23,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:23,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:37:23,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:23,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:37:23,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:23,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:37:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:23,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:23,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:23,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:23,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:23,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:23,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:23,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:23,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:23,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:23,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:23,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:23,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:23,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:23,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:23,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:23,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:24,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:24,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:24,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:24,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:28,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:28,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 22:37:28,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-27 22:37:28,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 22:37:28,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:28,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 22:37:28,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 22:37:28,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 22:37:28,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:28,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:37:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:28,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:28,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:28,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:28,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:28,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:28,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:30,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:30,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 22:37:30,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:37:30,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2123 [2020-10-27 22:37:30,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:30,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:37:30,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:30,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 22:37:30,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:30,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:37:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:30,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:30,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:30,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:30,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:30,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 22:37:30,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:37:30,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-27 22:37:30,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:30,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:37:30,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:30,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 22:37:30,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:30,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:37:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:30,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:30,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:30,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:37:30,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:30,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:37:30,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:30,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:37:30,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:30,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:37:30,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:30,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:37:30,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:30,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:30,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:30,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:37:30,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:30,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:37:30,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:30,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:37:30,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:30,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:37:30,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:30,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:37:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:30,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:30,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:30,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:37:30,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:30,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:37:30,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:30,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:37:30,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:30,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:37:30,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:30,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 22:37:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:30,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:30,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:30,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:30,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:30,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:31,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:31,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 22:37:31,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:37:31,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-27 22:37:31,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:31,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:37:31,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:37:31,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 22:37:31,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:31,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:37:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:31,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:31,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:31,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 22:37:31,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:31,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:37:31,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:31,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:37:31,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:31,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 22:37:31,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:31,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:37:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:31,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:31,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:31,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:37:31,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:31,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:37:31,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:31,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:37:31,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:31,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:37:31,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:31,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:37:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:31,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:31,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:31,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:37:31,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:31,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 22:37:31,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:31,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:37:31,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:31,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:37:31,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:31,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:37:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:31,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:31,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:31,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:31,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:37:31,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:37:31,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:37:31,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:31,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:37:31,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:31,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:37:31,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:31,239 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 83 proven. 108 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-27 22:37:31,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999747764] [2020-10-27 22:37:31,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:37:31,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 22:37:31,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049629844] [2020-10-27 22:37:31,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 22:37:31,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:37:31,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 22:37:31,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:37:31,242 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 11 states. [2020-10-27 22:37:31,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:37:31,981 INFO L93 Difference]: Finished difference Result 91 states and 116 transitions. [2020-10-27 22:37:31,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 22:37:31,982 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-10-27 22:37:31,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:37:31,984 INFO L225 Difference]: With dead ends: 91 [2020-10-27 22:37:31,984 INFO L226 Difference]: Without dead ends: 55 [2020-10-27 22:37:31,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-10-27 22:37:31,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-27 22:37:31,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2020-10-27 22:37:31,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-27 22:37:31,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2020-10-27 22:37:31,995 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 84 [2020-10-27 22:37:31,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:37:31,995 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2020-10-27 22:37:31,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 22:37:31,996 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2020-10-27 22:37:31,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 22:37:31,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:37:31,997 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:37:31,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 22:37:31,997 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:37:31,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:37:31,997 INFO L82 PathProgramCache]: Analyzing trace with hash -886095822, now seen corresponding path program 7 times [2020-10-27 22:37:31,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:37:31,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376773986] [2020-10-27 22:37:31,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:37:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:32,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:32,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:32,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:32,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:32,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:37,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:37,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 22:37:37,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:37:37,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 22:37:37,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:37,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:37:37,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 22:37:37,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 22:37:37,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:37,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:37:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:37,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:37,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:37,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:37:37,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:37,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:37:37,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:37,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:37:37,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:37,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:37:37,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:37,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:37:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:37,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:37,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:37,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:37,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:37,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:42,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:42,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 22:37:42,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:37:42,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 22:37:42,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:42,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:37:42,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:37:42,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 22:37:42,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:42,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:37:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:42,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:42,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:42,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:42,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:42,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 22:37:42,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:37:42,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-10-27 22:37:42,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:42,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:37:42,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:42,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 22:37:42,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:42,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:37:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:42,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:42,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:42,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 22:37:42,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:42,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:37:42,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:42,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:37:42,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:42,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 22:37:42,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:42,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:37:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:42,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:42,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:42,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:37:42,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:42,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:37:42,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:42,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:37:42,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:42,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:37:42,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:42,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:37:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:42,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:42,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:42,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:37:42,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:42,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:37:42,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:42,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:37:42,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:42,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:37:42,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:42,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:37:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:42,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:42,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:42,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:37:42,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:42,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:37:42,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:42,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:37:42,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:42,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:37:42,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:42,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 22:37:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:42,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:42,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:42,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 22:37:42,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:42,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:37:42,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:42,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:37:42,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:42,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 22:37:42,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:42,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:37:42,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:42,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:42,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:42,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:37:42,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:42,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:37:42,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:42,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:37:42,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:42,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:37:42,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:42,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:37:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:42,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:42,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:42,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:37:42,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:42,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:37:42,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:42,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:37:42,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:42,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:37:42,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:42,757 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 40 proven. 58 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-27 22:37:42,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376773986] [2020-10-27 22:37:42,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:37:42,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 22:37:42,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197143449] [2020-10-27 22:37:42,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:37:42,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:37:42,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:37:42,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:37:42,762 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 10 states. [2020-10-27 22:37:43,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:37:43,200 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2020-10-27 22:37:43,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 22:37:43,200 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-10-27 22:37:43,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:37:43,202 INFO L225 Difference]: With dead ends: 57 [2020-10-27 22:37:43,203 INFO L226 Difference]: Without dead ends: 52 [2020-10-27 22:37:43,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-27 22:37:43,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-27 22:37:43,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-27 22:37:43,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-27 22:37:43,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2020-10-27 22:37:43,218 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 70 [2020-10-27 22:37:43,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:37:43,218 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2020-10-27 22:37:43,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:37:43,218 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2020-10-27 22:37:43,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 22:37:43,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:37:43,220 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:37:43,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 22:37:43,220 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:37:43,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:37:43,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1296121057, now seen corresponding path program 8 times [2020-10-27 22:37:43,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:37:43,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884677778] [2020-10-27 22:37:43,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:37:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 22:37:43,237 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 22:37:43,237 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 22:37:43,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 22:37:43,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 10:37:43 BoogieIcfgContainer [2020-10-27 22:37:43,263 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 22:37:43,265 INFO L168 Benchmark]: Toolchain (without parser) took 70941.86 ms. Allocated memory was 158.3 MB in the beginning and 418.4 MB in the end (delta: 260.0 MB). Free memory was 133.4 MB in the beginning and 192.5 MB in the end (delta: -59.1 MB). Peak memory consumption was 202.5 MB. Max. memory is 8.0 GB. [2020-10-27 22:37:43,266 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 158.3 MB. Free memory was 128.9 MB in the beginning and 128.8 MB in the end (delta: 67.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 22:37:43,266 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.09 ms. Allocated memory is still 158.3 MB. Free memory was 132.7 MB in the beginning and 123.8 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 22:37:43,267 INFO L168 Benchmark]: Boogie Preprocessor took 40.14 ms. Allocated memory is still 158.3 MB. Free memory was 123.6 MB in the beginning and 122.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 22:37:43,268 INFO L168 Benchmark]: RCFGBuilder took 344.82 ms. Allocated memory is still 158.3 MB. Free memory was 122.2 MB in the beginning and 109.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-27 22:37:43,269 INFO L168 Benchmark]: TraceAbstraction took 70290.98 ms. Allocated memory was 158.3 MB in the beginning and 418.4 MB in the end (delta: 260.0 MB). Free memory was 109.1 MB in the beginning and 192.5 MB in the end (delta: -83.4 MB). Peak memory consumption was 177.4 MB. Max. memory is 8.0 GB. [2020-10-27 22:37:43,272 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 158.3 MB. Free memory was 128.9 MB in the beginning and 128.8 MB in the end (delta: 67.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 251.09 ms. Allocated memory is still 158.3 MB. Free memory was 132.7 MB in the beginning and 123.8 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.14 ms. Allocated memory is still 158.3 MB. Free memory was 123.6 MB in the beginning and 122.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 344.82 ms. Allocated memory is still 158.3 MB. Free memory was 122.2 MB in the beginning and 109.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 70290.98 ms. Allocated memory was 158.3 MB in the beginning and 418.4 MB in the end (delta: 260.0 MB). Free memory was 109.1 MB in the beginning and 192.5 MB in the end (delta: -83.4 MB). Peak memory consumption was 177.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L26] int x = 5; [L27] CALL, EXPR fibo(x) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L13] RET, EXPR fibo(n-1) [L13] CALL, EXPR fibo(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L13] RET, EXPR fibo(n-2) [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-1) [L13] CALL, EXPR fibo(n-2) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L13] RET, EXPR fibo(n-2) [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-1) [L13] CALL, EXPR fibo(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L13] RET, EXPR fibo(n-1) [L13] CALL, EXPR fibo(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L13] RET, EXPR fibo(n-2) [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-2) [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-1) [L13] CALL, EXPR fibo(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L13] RET, EXPR fibo(n-1) [L13] CALL, EXPR fibo(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L13] RET, EXPR fibo(n-2) [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-1) [L13] CALL, EXPR fibo(n-2) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L13] RET, EXPR fibo(n-2) [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-2) [L13] return fibo(n-1) + fibo(n-2); [L27] RET, EXPR fibo(x) [L27] int result = fibo(x); [L28] COND TRUE result == 5 [L29] CALL reach_error() [L4] __assert_fail("0", "fibo_5-2.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 70.2s, OverallIterations: 12, TraceHistogramMax: 15, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 230 SDtfs, 364 SDslu, 371 SDs, 0 SdLazy, 1383 SolverSat, 327 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 305 GetRequests, 150 SyntacticMatches, 2 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 19 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 63.7s InterpolantComputationTime, 609 NumberOfCodeBlocks, 609 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 487 ConstructedInterpolants, 0 QuantifiedInterpolants, 79116 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 662/981 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...