/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block 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=NARROWEST --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 -i ../../../trunk/examples/svcomp/bitvector/byte_add_1-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 05:27:54,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 05:27:54,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 05:27:54,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 05:27:54,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 05:27:54,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 05:27:54,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 05:27:54,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 05:27:54,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 05:27:54,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 05:27:54,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 05:27:54,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 05:27:54,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 05:27:54,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 05:27:54,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 05:27:54,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 05:27:54,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 05:27:54,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 05:27:54,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 05:27:54,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 05:27:54,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 05:27:54,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 05:27:54,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 05:27:54,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 05:27:54,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 05:27:54,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 05:27:54,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 05:27:54,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 05:27:54,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 05:27:54,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 05:27:54,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 05:27:54,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 05:27:54,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 05:27:54,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 05:27:54,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 05:27:54,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 05:27:54,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 05:27:54,795 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 05:27:54,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 05:27:54,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 05:27:54,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 05:27:54,800 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 [2020-10-13 05:27:54,836 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 05:27:54,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 05:27:54,839 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 05:27:54,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 05:27:54,839 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 05:27:54,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 05:27:54,840 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 05:27:54,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 05:27:54,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 05:27:54,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 05:27:54,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 05:27:54,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 05:27:54,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 05:27:54,842 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 05:27:54,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 05:27:54,842 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 05:27:54,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 05:27:54,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 05:27:54,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 05:27:54,843 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 05:27:54,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 05:27:54,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 05:27:54,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 05:27:54,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 05:27:54,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 05:27:54,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 05:27:54,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 05:27:54,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 05:27:54,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 05:27:54,845 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> 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=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 05:27:55,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 05:27:55,152 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 05:27:55,156 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 05:27:55,157 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 05:27:55,158 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 05:27:55,158 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/byte_add_1-1.i [2020-10-13 05:27:55,223 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a07191dab/66f76e9c209a4befbf9e23e9ebc89f82/FLAGaf3f9413f [2020-10-13 05:27:55,680 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 05:27:55,681 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/byte_add_1-1.i [2020-10-13 05:27:55,693 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a07191dab/66f76e9c209a4befbf9e23e9ebc89f82/FLAGaf3f9413f [2020-10-13 05:27:56,065 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a07191dab/66f76e9c209a4befbf9e23e9ebc89f82 [2020-10-13 05:27:56,075 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 05:27:56,077 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 05:27:56,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 05:27:56,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 05:27:56,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 05:27:56,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:27:56" (1/1) ... [2020-10-13 05:27:56,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ecc4458 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:27:56, skipping insertion in model container [2020-10-13 05:27:56,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:27:56" (1/1) ... [2020-10-13 05:27:56,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 05:27:56,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 05:27:56,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:27:56,381 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 05:27:56,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:27:56,544 INFO L208 MainTranslator]: Completed translation [2020-10-13 05:27:56,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:27:56 WrapperNode [2020-10-13 05:27:56,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 05:27:56,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 05:27:56,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 05:27:56,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 05:27:56,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:27:56" (1/1) ... [2020-10-13 05:27:56,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:27:56" (1/1) ... [2020-10-13 05:27:56,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:27:56" (1/1) ... [2020-10-13 05:27:56,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:27:56" (1/1) ... [2020-10-13 05:27:56,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:27:56" (1/1) ... [2020-10-13 05:27:56,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:27:56" (1/1) ... [2020-10-13 05:27:56,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:27:56" (1/1) ... [2020-10-13 05:27:56,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 05:27:56,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 05:27:56,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 05:27:56,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 05:27:56,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:27:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 05:27:56,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 05:27:56,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 05:27:56,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 05:27:56,656 INFO L138 BoogieDeclarations]: Found implementation of procedure mp_add [2020-10-13 05:27:56,656 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 05:27:56,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 05:27:56,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-13 05:27:56,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 05:27:56,657 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-13 05:27:56,657 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-13 05:27:56,658 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-13 05:27:56,658 INFO L130 BoogieDeclarations]: Found specification of procedure mp_add [2020-10-13 05:27:56,658 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 05:27:56,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 05:27:56,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 05:27:56,978 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 05:27:56,979 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-13 05:27:56,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:27:56 BoogieIcfgContainer [2020-10-13 05:27:56,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 05:27:56,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 05:27:56,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 05:27:56,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 05:27:56,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:27:56" (1/3) ... [2020-10-13 05:27:56,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9edea16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:27:56, skipping insertion in model container [2020-10-13 05:27:56,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:27:56" (2/3) ... [2020-10-13 05:27:56,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9edea16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:27:56, skipping insertion in model container [2020-10-13 05:27:56,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:27:56" (3/3) ... [2020-10-13 05:27:56,995 INFO L109 eAbstractionObserver]: Analyzing ICFG byte_add_1-1.i [2020-10-13 05:27:57,007 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 05:27:57,015 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 05:27:57,031 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 05:27:57,063 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 05:27:57,063 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 05:27:57,063 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 05:27:57,063 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 05:27:57,063 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 05:27:57,064 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 05:27:57,064 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 05:27:57,067 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 05:27:57,093 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-13 05:27:57,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 05:27:57,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:27:57,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:27:57,102 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:27:57,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:27:57,117 INFO L82 PathProgramCache]: Analyzing trace with hash 397916932, now seen corresponding path program 1 times [2020-10-13 05:27:57,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:27:57,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321897691] [2020-10-13 05:27:57,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:27:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:57,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:57,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:57,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:57,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 05:27:57,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:27:57,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-13 05:27:57,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:57,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:57,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 05:27:57,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:57,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 05:27:57,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:27:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:57,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:57,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:57,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:27:57,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:57,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:57,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:57,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:57,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:57,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:57,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:27:57,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:27:57,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:57,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:57,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:57,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:57,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 05:27:57,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:27:57,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 05:27:57,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:57,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:57,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:27:57,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:57,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:27:57,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:27:57,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321897691] [2020-10-13 05:27:57,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:27:57,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-13 05:27:57,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029494453] [2020-10-13 05:27:57,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-13 05:27:57,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:27:57,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-13 05:27:57,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-13 05:27:57,628 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2020-10-13 05:27:57,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:27:57,668 INFO L93 Difference]: Finished difference Result 76 states and 112 transitions. [2020-10-13 05:27:57,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-13 05:27:57,669 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2020-10-13 05:27:57,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:27:57,688 INFO L225 Difference]: With dead ends: 76 [2020-10-13 05:27:57,688 INFO L226 Difference]: Without dead ends: 47 [2020-10-13 05:27:57,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-13 05:27:57,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-13 05:27:57,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-13 05:27:57,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 05:27:57,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 73 transitions. [2020-10-13 05:27:57,731 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 73 transitions. Word has length 21 [2020-10-13 05:27:57,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:27:57,732 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 73 transitions. [2020-10-13 05:27:57,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-13 05:27:57,732 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 73 transitions. [2020-10-13 05:27:57,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 05:27:57,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:27:57,734 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:27:57,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 05:27:57,734 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:27:57,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:27:57,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1531564698, now seen corresponding path program 1 times [2020-10-13 05:27:57,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:27:57,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809366529] [2020-10-13 05:27:57,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:27:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:57,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:57,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:57,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:58,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:58,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 05:27:58,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:27:58,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-13 05:27:58,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:58,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:58,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 05:27:58,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 05:27:58,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 05:27:58,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:27:58,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:58,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:58,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:58,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:27:58,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:58,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:58,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:58,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:58,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:58,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:58,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:58,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:27:58,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:58,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:58,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:58,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:58,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:58,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 05:27:58,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:27:58,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-13 05:27:58,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:58,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:58,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:27:58,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 05:27:58,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:58,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:27:58,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809366529] [2020-10-13 05:27:58,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:27:58,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 05:27:58,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371137184] [2020-10-13 05:27:58,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 05:27:58,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:27:58,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 05:27:58,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 05:27:58,400 INFO L87 Difference]: Start difference. First operand 47 states and 73 transitions. Second operand 3 states. [2020-10-13 05:27:58,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:27:58,611 INFO L93 Difference]: Finished difference Result 102 states and 169 transitions. [2020-10-13 05:27:58,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 05:27:58,612 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-13 05:27:58,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:27:58,614 INFO L225 Difference]: With dead ends: 102 [2020-10-13 05:27:58,614 INFO L226 Difference]: Without dead ends: 70 [2020-10-13 05:27:58,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 05:27:58,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-13 05:27:58,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-10-13 05:27:58,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-13 05:27:58,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 98 transitions. [2020-10-13 05:27:58,639 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 98 transitions. Word has length 21 [2020-10-13 05:27:58,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:27:58,642 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 98 transitions. [2020-10-13 05:27:58,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 05:27:58,642 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 98 transitions. [2020-10-13 05:27:58,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-13 05:27:58,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:27:58,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:27:58,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 05:27:58,645 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:27:58,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:27:58,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1473767205, now seen corresponding path program 1 times [2020-10-13 05:27:58,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:27:58,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285044608] [2020-10-13 05:27:58,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:27:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:58,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:58,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:58,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:58,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:58,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:58,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:58,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:58,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:58,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:59,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:59,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 05:27:59,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 05:27:59,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 529 [2020-10-13 05:27:59,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:59,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:27:59,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 05:27:59,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 05:27:59,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:59,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:27:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:59,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:59,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:59,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:27:59,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:59,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:59,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:59,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:59,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:59,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:59,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:59,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:27:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:59,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:59,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:59,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:59,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:59,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:59,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:59,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:59,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:59,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:59,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:59,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 05:27:59,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 05:27:59,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-13 05:27:59,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:59,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:27:59,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 05:27:59,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 05:27:59,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:59,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 05:27:59,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285044608] [2020-10-13 05:27:59,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:27:59,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 05:27:59,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806870883] [2020-10-13 05:27:59,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 05:27:59,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:27:59,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 05:27:59,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:27:59,582 INFO L87 Difference]: Start difference. First operand 68 states and 98 transitions. Second operand 4 states. [2020-10-13 05:27:59,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:27:59,834 INFO L93 Difference]: Finished difference Result 154 states and 230 transitions. [2020-10-13 05:27:59,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 05:27:59,835 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-13 05:27:59,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:27:59,839 INFO L225 Difference]: With dead ends: 154 [2020-10-13 05:27:59,839 INFO L226 Difference]: Without dead ends: 112 [2020-10-13 05:27:59,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:27:59,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-13 05:27:59,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 76. [2020-10-13 05:27:59,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-13 05:27:59,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 107 transitions. [2020-10-13 05:27:59,850 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 107 transitions. Word has length 27 [2020-10-13 05:27:59,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:27:59,851 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 107 transitions. [2020-10-13 05:27:59,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 05:27:59,851 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 107 transitions. [2020-10-13 05:27:59,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-13 05:27:59,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:27:59,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:27:59,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 05:27:59,853 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:27:59,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:27:59,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1469042964, now seen corresponding path program 1 times [2020-10-13 05:27:59,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:27:59,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828689755] [2020-10-13 05:27:59,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:27:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:59,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:59,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:59,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:59,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:59,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:00,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:00,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:00,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:00,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:00,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:00,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 05:28:00,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 05:28:00,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 798 [2020-10-13 05:28:00,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:00,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:28:00,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 05:28:00,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 05:28:00,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:00,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:00,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:00,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:00,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:00,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:00,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:28:00,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:00,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:00,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:00,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:00,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:00,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:28:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:00,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:00,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:00,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:00,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:00,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:00,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:00,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:00,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:00,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:01,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:01,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 05:28:01,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 05:28:01,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-10-13 05:28:01,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:01,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:28:01,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 05:28:01,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 05:28:01,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-13 05:28:01,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 05:28:01,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828689755] [2020-10-13 05:28:01,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:01,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 05:28:01,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905587539] [2020-10-13 05:28:01,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 05:28:01,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:01,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 05:28:01,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:28:01,244 INFO L87 Difference]: Start difference. First operand 76 states and 107 transitions. Second operand 5 states. [2020-10-13 05:28:01,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:01,466 INFO L93 Difference]: Finished difference Result 198 states and 297 transitions. [2020-10-13 05:28:01,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:28:01,467 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-10-13 05:28:01,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:01,469 INFO L225 Difference]: With dead ends: 198 [2020-10-13 05:28:01,469 INFO L226 Difference]: Without dead ends: 156 [2020-10-13 05:28:01,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:28:01,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-13 05:28:01,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 76. [2020-10-13 05:28:01,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-13 05:28:01,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 107 transitions. [2020-10-13 05:28:01,480 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 107 transitions. Word has length 28 [2020-10-13 05:28:01,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:01,481 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 107 transitions. [2020-10-13 05:28:01,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 05:28:01,481 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 107 transitions. [2020-10-13 05:28:01,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-13 05:28:01,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:01,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:01,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 05:28:01,483 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:01,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:01,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1874591770, now seen corresponding path program 1 times [2020-10-13 05:28:01,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:01,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46932716] [2020-10-13 05:28:01,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:01,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:01,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:01,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:01,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:01,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:01,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:01,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:01,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:01,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:02,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:02,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 05:28:02,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 05:28:02,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 798 [2020-10-13 05:28:02,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:02,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 05:28:02,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 05:28:02,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:02,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:02,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:02,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:02,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:02,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:02,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:02,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:02,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:02,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:02,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:02,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:02,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:02,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:28:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:02,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:02,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:02,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:02,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:02,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:02,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:02,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:02,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:02,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:02,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:02,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 05:28:02,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 05:28:02,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-10-13 05:28:02,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:02,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 05:28:02,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 05:28:02,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:02,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:03,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 05:28:03,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46932716] [2020-10-13 05:28:03,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:03,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 05:28:03,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624143448] [2020-10-13 05:28:03,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 05:28:03,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:03,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 05:28:03,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 05:28:03,019 INFO L87 Difference]: Start difference. First operand 76 states and 107 transitions. Second operand 7 states. [2020-10-13 05:28:04,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:04,035 INFO L93 Difference]: Finished difference Result 286 states and 453 transitions. [2020-10-13 05:28:04,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 05:28:04,035 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-10-13 05:28:04,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:04,038 INFO L225 Difference]: With dead ends: 286 [2020-10-13 05:28:04,038 INFO L226 Difference]: Without dead ends: 244 [2020-10-13 05:28:04,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-13 05:28:04,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-13 05:28:04,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 207. [2020-10-13 05:28:04,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-13 05:28:04,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 313 transitions. [2020-10-13 05:28:04,056 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 313 transitions. Word has length 29 [2020-10-13 05:28:04,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:04,056 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 313 transitions. [2020-10-13 05:28:04,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 05:28:04,057 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 313 transitions. [2020-10-13 05:28:04,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-13 05:28:04,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:04,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:04,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 05:28:04,059 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:04,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:04,060 INFO L82 PathProgramCache]: Analyzing trace with hash 214387631, now seen corresponding path program 1 times [2020-10-13 05:28:04,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:04,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367728587] [2020-10-13 05:28:04,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:04,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:05,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:05,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 05:28:05,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 05:28:05,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1604 [2020-10-13 05:28:05,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:05,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:28:05,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 05:28:05,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:28:05,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:05,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:05,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:05,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:05,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:05,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:05,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:28:05,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:05,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:05,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:05,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:05,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:05,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:28:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:05,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:05,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:05,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:05,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:05,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:05,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:05,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:05,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:05,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:05,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:06,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:06,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:06,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:06,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:06,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:06,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:06,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:07,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 05:28:07,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 05:28:07,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1371 [2020-10-13 05:28:07,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:07,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:28:07,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:28:07,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:28:07,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:07,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:28:07,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367728587] [2020-10-13 05:28:07,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:07,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 05:28:07,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988758101] [2020-10-13 05:28:07,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 05:28:07,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:07,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 05:28:07,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:28:07,148 INFO L87 Difference]: Start difference. First operand 207 states and 313 transitions. Second operand 4 states. [2020-10-13 05:28:07,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:07,377 INFO L93 Difference]: Finished difference Result 586 states and 893 transitions. [2020-10-13 05:28:07,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 05:28:07,377 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-13 05:28:07,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:07,380 INFO L225 Difference]: With dead ends: 586 [2020-10-13 05:28:07,380 INFO L226 Difference]: Without dead ends: 418 [2020-10-13 05:28:07,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:28:07,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-10-13 05:28:07,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 223. [2020-10-13 05:28:07,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-10-13 05:28:07,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 332 transitions. [2020-10-13 05:28:07,413 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 332 transitions. Word has length 34 [2020-10-13 05:28:07,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:07,414 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 332 transitions. [2020-10-13 05:28:07,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 05:28:07,414 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 332 transitions. [2020-10-13 05:28:07,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-13 05:28:07,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:07,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:07,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 05:28:07,417 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:07,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:07,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1041972219, now seen corresponding path program 1 times [2020-10-13 05:28:07,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:07,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137613184] [2020-10-13 05:28:07,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:07,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:09,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:09,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 05:28:09,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 05:28:09,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2377 [2020-10-13 05:28:09,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:09,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:28:09,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 05:28:09,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:09,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:09,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:09,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:09,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:09,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:09,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:09,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:28:09,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:09,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:09,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:09,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:09,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:09,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:28:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:09,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:09,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:09,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:09,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:09,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:09,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:09,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:09,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:11,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:11,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 05:28:11,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 05:28:11,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1975 [2020-10-13 05:28:11,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:11,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:28:11,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 05:28:11,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:28:11,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:11,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:28:11,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137613184] [2020-10-13 05:28:11,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:11,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 05:28:11,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627396010] [2020-10-13 05:28:11,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 05:28:11,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:11,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 05:28:11,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:28:11,870 INFO L87 Difference]: Start difference. First operand 223 states and 332 transitions. Second operand 5 states. [2020-10-13 05:28:12,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:12,188 INFO L93 Difference]: Finished difference Result 616 states and 984 transitions. [2020-10-13 05:28:12,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:28:12,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-10-13 05:28:12,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:12,196 INFO L225 Difference]: With dead ends: 616 [2020-10-13 05:28:12,196 INFO L226 Difference]: Without dead ends: 475 [2020-10-13 05:28:12,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:28:12,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2020-10-13 05:28:12,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 312. [2020-10-13 05:28:12,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-10-13 05:28:12,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 459 transitions. [2020-10-13 05:28:12,223 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 459 transitions. Word has length 35 [2020-10-13 05:28:12,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:12,224 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 459 transitions. [2020-10-13 05:28:12,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 05:28:12,224 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 459 transitions. [2020-10-13 05:28:12,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 05:28:12,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:12,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:12,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 05:28:12,230 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:12,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:12,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1396867702, now seen corresponding path program 1 times [2020-10-13 05:28:12,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:12,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694200877] [2020-10-13 05:28:12,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:12,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:14,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:14,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:14,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:14,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:14,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:14,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:14,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:17,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 05:28:17,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 39 [2020-10-13 05:28:17,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 05:28:17,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:17,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:28:17,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 05:28:17,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 05:28:17,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:17,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:17,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:17,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:17,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:17,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:17,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:17,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:17,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:17,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:17,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:17,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:28:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:17,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:18,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:18,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:18,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:18,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:18,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:18,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:18,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:18,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:18,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:19,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:19,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:19,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:19,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:20,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:20,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:21,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:22,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 05:28:22,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 38 [2020-10-13 05:28:22,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 05:28:22,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:22,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:28:22,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 05:28:22,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 05:28:22,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:22,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 05:28:22,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694200877] [2020-10-13 05:28:22,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:22,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 05:28:22,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859169577] [2020-10-13 05:28:22,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 05:28:22,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:22,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 05:28:22,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:28:22,329 INFO L87 Difference]: Start difference. First operand 312 states and 459 transitions. Second operand 4 states. [2020-10-13 05:28:22,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:22,661 INFO L93 Difference]: Finished difference Result 870 states and 1321 transitions. [2020-10-13 05:28:22,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 05:28:22,661 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-13 05:28:22,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:22,664 INFO L225 Difference]: With dead ends: 870 [2020-10-13 05:28:22,664 INFO L226 Difference]: Without dead ends: 602 [2020-10-13 05:28:22,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:28:22,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-10-13 05:28:22,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 377. [2020-10-13 05:28:22,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-10-13 05:28:22,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 563 transitions. [2020-10-13 05:28:22,687 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 563 transitions. Word has length 41 [2020-10-13 05:28:22,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:22,688 INFO L479 AbstractCegarLoop]: Abstraction has 377 states and 563 transitions. [2020-10-13 05:28:22,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 05:28:22,688 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 563 transitions. [2020-10-13 05:28:22,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 05:28:22,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:22,692 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:22,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 05:28:22,692 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:22,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:22,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1306744213, now seen corresponding path program 1 times [2020-10-13 05:28:22,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:22,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622385967] [2020-10-13 05:28:22,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:22,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:25,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:25,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:25,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:25,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:25,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:25,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:25,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:25,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:25,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:25,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:25,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:25,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:25,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:25,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:27,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 05:28:27,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 86 [2020-10-13 05:28:27,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 05:28:27,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:27,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:28:27,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 05:28:27,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 05:28:27,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:27,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:27,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:27,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:27,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:27,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:28:27,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:27,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:27,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:27,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:27,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:27,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:28:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:27,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:28,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:28,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:28,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:28,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:28,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:28,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:29,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:29,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:29,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:29,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:29,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:29,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:29,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:29,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:29,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:29,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:29,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:29,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:29,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:29,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:31,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:32,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 05:28:32,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 59 [2020-10-13 05:28:32,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 05:28:32,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:32,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:28:32,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 05:28:32,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 05:28:32,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:32,777 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 05:28:32,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622385967] [2020-10-13 05:28:32,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:32,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 05:28:32,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638576701] [2020-10-13 05:28:32,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 05:28:32,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:32,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 05:28:32,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:28:32,781 INFO L87 Difference]: Start difference. First operand 377 states and 563 transitions. Second operand 4 states. [2020-10-13 05:28:33,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:33,068 INFO L93 Difference]: Finished difference Result 1030 states and 1555 transitions. [2020-10-13 05:28:33,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 05:28:33,069 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-13 05:28:33,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:33,074 INFO L225 Difference]: With dead ends: 1030 [2020-10-13 05:28:33,074 INFO L226 Difference]: Without dead ends: 691 [2020-10-13 05:28:33,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:28:33,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-10-13 05:28:33,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 398. [2020-10-13 05:28:33,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-10-13 05:28:33,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 581 transitions. [2020-10-13 05:28:33,095 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 581 transitions. Word has length 47 [2020-10-13 05:28:33,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:33,098 INFO L479 AbstractCegarLoop]: Abstraction has 398 states and 581 transitions. [2020-10-13 05:28:33,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 05:28:33,098 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 581 transitions. [2020-10-13 05:28:33,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 05:28:33,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:33,099 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:33,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 05:28:33,102 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:33,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:33,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1048578775, now seen corresponding path program 1 times [2020-10-13 05:28:33,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:33,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287055232] [2020-10-13 05:28:33,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:33,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:38,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 05:28:38,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 114 [2020-10-13 05:28:38,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 05:28:38,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:38,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:28:38,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 05:28:38,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 05:28:38,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:38,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:38,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:38,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:38,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:38,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:38,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:28:38,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:38,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:38,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:38,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:38,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:38,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:28:38,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:38,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:39,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:39,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:39,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:39,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:39,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:39,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:39,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:39,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:39,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:39,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:39,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:39,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:39,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:39,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:39,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:39,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:39,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:39,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:39,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:39,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:39,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:39,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:39,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:39,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:41,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:41,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:41,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:41,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:41,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:41,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:41,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:41,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:41,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:41,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:41,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:41,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:41,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:41,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:41,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:41,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:43,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 05:28:43,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 94 [2020-10-13 05:28:43,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 05:28:43,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:43,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:28:43,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 05:28:43,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 05:28:43,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:43,222 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 05:28:43,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287055232] [2020-10-13 05:28:43,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:43,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 05:28:43,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897362312] [2020-10-13 05:28:43,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 05:28:43,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:43,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 05:28:43,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:28:43,225 INFO L87 Difference]: Start difference. First operand 398 states and 581 transitions. Second operand 6 states. [2020-10-13 05:28:43,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:43,480 INFO L93 Difference]: Finished difference Result 822 states and 1211 transitions. [2020-10-13 05:28:43,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:28:43,481 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2020-10-13 05:28:43,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:43,483 INFO L225 Difference]: With dead ends: 822 [2020-10-13 05:28:43,484 INFO L226 Difference]: Without dead ends: 458 [2020-10-13 05:28:43,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:28:43,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2020-10-13 05:28:43,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 424. [2020-10-13 05:28:43,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2020-10-13 05:28:43,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 608 transitions. [2020-10-13 05:28:43,504 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 608 transitions. Word has length 47 [2020-10-13 05:28:43,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:43,504 INFO L479 AbstractCegarLoop]: Abstraction has 424 states and 608 transitions. [2020-10-13 05:28:43,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 05:28:43,505 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 608 transitions. [2020-10-13 05:28:43,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 05:28:43,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:43,506 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:43,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 05:28:43,507 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:43,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:43,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1636946980, now seen corresponding path program 1 times [2020-10-13 05:28:43,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:43,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702636808] [2020-10-13 05:28:43,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:43,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:43,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:46,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:46,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:46,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:48,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 05:28:48,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 70 [2020-10-13 05:28:48,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 05:28:48,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:48,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:28:48,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 05:28:48,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:48,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:48,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:48,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:48,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:48,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:48,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:28:48,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:48,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:48,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:48,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:48,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:48,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:28:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:48,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:53,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 05:28:53,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 64 [2020-10-13 05:28:53,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 05:28:53,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:53,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:28:53,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:28:53,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 05:28:53,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:53,596 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 05:28:53,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702636808] [2020-10-13 05:28:53,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:53,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 05:28:53,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837687998] [2020-10-13 05:28:53,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 05:28:53,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:53,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 05:28:53,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:28:53,598 INFO L87 Difference]: Start difference. First operand 424 states and 608 transitions. Second operand 6 states. [2020-10-13 05:28:53,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:53,849 INFO L93 Difference]: Finished difference Result 1630 states and 2344 transitions. [2020-10-13 05:28:53,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 05:28:53,850 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-10-13 05:28:53,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:53,856 INFO L225 Difference]: With dead ends: 1630 [2020-10-13 05:28:53,856 INFO L226 Difference]: Without dead ends: 1252 [2020-10-13 05:28:53,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-13 05:28:53,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2020-10-13 05:28:53,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 424. [2020-10-13 05:28:53,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2020-10-13 05:28:53,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 608 transitions. [2020-10-13 05:28:53,880 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 608 transitions. Word has length 53 [2020-10-13 05:28:53,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:53,881 INFO L479 AbstractCegarLoop]: Abstraction has 424 states and 608 transitions. [2020-10-13 05:28:53,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 05:28:53,881 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 608 transitions. [2020-10-13 05:28:53,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 05:28:53,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:53,882 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:53,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 05:28:53,882 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:53,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:53,883 INFO L82 PathProgramCache]: Analyzing trace with hash 313867515, now seen corresponding path program 1 times [2020-10-13 05:28:53,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:53,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113870004] [2020-10-13 05:28:53,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:53,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:57,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:57,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:57,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:57,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:57,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:57,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:57,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:57,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:57,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:57,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:57,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:57,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:58,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:58,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:58,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:58,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:58,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:58,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 05:28:58,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 47 [2020-10-13 05:28:58,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 05:28:58,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:58,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:28:58,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 05:28:58,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:58,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:58,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:58,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:58,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:58,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:58,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:58,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:28:58,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:58,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:58,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:58,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:58,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:58,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:28:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:58,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:58,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:58,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:58,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:58,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:58,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:58,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:58,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:58,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:03,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 05:29:03,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 70 [2020-10-13 05:29:03,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 05:29:03,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:03,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 05:29:03,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:29:03,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 05:29:03,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:04,010 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 05:29:04,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113870004] [2020-10-13 05:29:04,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:29:04,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 05:29:04,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381637092] [2020-10-13 05:29:04,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 05:29:04,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:29:04,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 05:29:04,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 05:29:04,012 INFO L87 Difference]: Start difference. First operand 424 states and 608 transitions. Second operand 8 states. [2020-10-13 05:29:05,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:29:05,155 INFO L93 Difference]: Finished difference Result 2104 states and 3132 transitions. [2020-10-13 05:29:05,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 05:29:05,156 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-10-13 05:29:05,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:29:05,163 INFO L225 Difference]: With dead ends: 2104 [2020-10-13 05:29:05,163 INFO L226 Difference]: Without dead ends: 1726 [2020-10-13 05:29:05,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-13 05:29:05,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2020-10-13 05:29:05,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1312. [2020-10-13 05:29:05,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1312 states. [2020-10-13 05:29:05,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1920 transitions. [2020-10-13 05:29:05,228 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1920 transitions. Word has length 54 [2020-10-13 05:29:05,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:29:05,228 INFO L479 AbstractCegarLoop]: Abstraction has 1312 states and 1920 transitions. [2020-10-13 05:29:05,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 05:29:05,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1920 transitions. [2020-10-13 05:29:05,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 05:29:05,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:29:05,232 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:29:05,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 05:29:05,232 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:29:05,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:29:05,233 INFO L82 PathProgramCache]: Analyzing trace with hash -705021934, now seen corresponding path program 1 times [2020-10-13 05:29:05,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:29:05,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135282367] [2020-10-13 05:29:05,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:29:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:05,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:10,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 05:29:10,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 38 [2020-10-13 05:29:10,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 05:29:10,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:10,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:29:10,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 05:29:10,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 05:29:10,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:10,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:29:10,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:10,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:10,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:29:10,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:10,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:29:10,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:10,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:29:10,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:10,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:29:10,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:10,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:29:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:10,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:14,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:14,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 05:29:14,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 38 [2020-10-13 05:29:14,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4236 [2020-10-13 05:29:14,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:14,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:29:14,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 05:29:14,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 05:29:14,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:14,550 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 05:29:14,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135282367] [2020-10-13 05:29:14,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:29:14,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 05:29:14,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370885417] [2020-10-13 05:29:14,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 05:29:14,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:29:14,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 05:29:14,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:29:14,552 INFO L87 Difference]: Start difference. First operand 1312 states and 1920 transitions. Second operand 5 states. [2020-10-13 05:29:14,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:29:14,871 INFO L93 Difference]: Finished difference Result 1837 states and 2662 transitions. [2020-10-13 05:29:14,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 05:29:14,871 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2020-10-13 05:29:14,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:29:14,881 INFO L225 Difference]: With dead ends: 1837 [2020-10-13 05:29:14,884 INFO L226 Difference]: Without dead ends: 1462 [2020-10-13 05:29:14,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:29:14,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2020-10-13 05:29:14,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1387. [2020-10-13 05:29:14,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1387 states. [2020-10-13 05:29:14,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 2009 transitions. [2020-10-13 05:29:14,949 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 2009 transitions. Word has length 56 [2020-10-13 05:29:14,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:29:14,949 INFO L479 AbstractCegarLoop]: Abstraction has 1387 states and 2009 transitions. [2020-10-13 05:29:14,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 05:29:14,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 2009 transitions. [2020-10-13 05:29:14,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 05:29:14,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:29:14,953 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:29:14,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 05:29:14,953 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:29:14,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:29:14,954 INFO L82 PathProgramCache]: Analyzing trace with hash -708856199, now seen corresponding path program 1 times [2020-10-13 05:29:14,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:29:14,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491589764] [2020-10-13 05:29:14,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:29:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:14,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:14,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:14,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:16,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:16,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:16,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:16,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:16,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:16,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:16,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:16,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:16,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:16,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:16,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:16,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:16,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:18,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:18,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:18,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:18,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:18,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:19,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:19,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 05:29:19,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 45 [2020-10-13 05:29:19,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 05:29:19,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:19,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:29:19,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 05:29:19,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 05:29:19,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:19,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:29:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:19,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:19,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:19,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:29:19,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:19,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:29:19,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:19,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:29:19,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:19,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:29:19,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:19,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:29:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:19,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:20,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:20,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:20,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:20,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:20,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:20,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:20,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:20,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:20,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:20,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:20,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:20,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:20,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:20,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:20,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:20,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:20,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:20,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:20,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:20,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:20,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:20,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:22,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:22,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:24,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:24,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 05:29:24,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 45 [2020-10-13 05:29:24,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 05:29:24,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:24,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:29:24,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 05:29:24,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 05:29:24,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:25,066 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 05:29:25,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491589764] [2020-10-13 05:29:25,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:29:25,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 05:29:25,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422053051] [2020-10-13 05:29:25,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 05:29:25,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:29:25,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 05:29:25,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:29:25,069 INFO L87 Difference]: Start difference. First operand 1387 states and 2009 transitions. Second operand 6 states. [2020-10-13 05:29:25,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:29:25,636 INFO L93 Difference]: Finished difference Result 2223 states and 3243 transitions. [2020-10-13 05:29:25,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 05:29:25,637 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-13 05:29:25,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:29:25,643 INFO L225 Difference]: With dead ends: 2223 [2020-10-13 05:29:25,644 INFO L226 Difference]: Without dead ends: 1540 [2020-10-13 05:29:25,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-13 05:29:25,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2020-10-13 05:29:25,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1293. [2020-10-13 05:29:25,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1293 states. [2020-10-13 05:29:25,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 1862 transitions. [2020-10-13 05:29:25,692 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 1862 transitions. Word has length 57 [2020-10-13 05:29:25,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:29:25,692 INFO L479 AbstractCegarLoop]: Abstraction has 1293 states and 1862 transitions. [2020-10-13 05:29:25,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 05:29:25,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 1862 transitions. [2020-10-13 05:29:25,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 05:29:25,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:29:25,696 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:29:25,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 05:29:25,696 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:29:25,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:29:25,696 INFO L82 PathProgramCache]: Analyzing trace with hash -569962265, now seen corresponding path program 1 times [2020-10-13 05:29:25,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:29:25,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660805008] [2020-10-13 05:29:25,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:29:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:25,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:25,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:25,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:25,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:25,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:25,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:25,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:25,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:25,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:25,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:25,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:25,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:28,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:28,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:30,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:30,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 05:29:30,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-13 05:29:30,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 05:29:30,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:30,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:29:30,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 05:29:30,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 05:29:30,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:30,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:29:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:30,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:30,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:30,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:29:30,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:30,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:29:30,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:30,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:29:30,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:30,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:29:30,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:29:30,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:29:30,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:30,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:30,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:30,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:30,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:30,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:30,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:30,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:30,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:30,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:30,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:31,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:31,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:31,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:31,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:31,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:31,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:32,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:32,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:33,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:33,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:35,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:35,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 05:29:35,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-13 05:29:35,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 05:29:35,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:35,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:29:35,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:29:35,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 05:29:35,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:35,971 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 05:29:35,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660805008] [2020-10-13 05:29:35,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:29:35,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 05:29:35,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86875762] [2020-10-13 05:29:35,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 05:29:35,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:29:35,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 05:29:35,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:29:35,973 INFO L87 Difference]: Start difference. First operand 1293 states and 1862 transitions. Second operand 6 states. [2020-10-13 05:29:36,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:29:36,587 INFO L93 Difference]: Finished difference Result 1990 states and 2830 transitions. [2020-10-13 05:29:36,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 05:29:36,588 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-13 05:29:36,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:29:36,594 INFO L225 Difference]: With dead ends: 1990 [2020-10-13 05:29:36,594 INFO L226 Difference]: Without dead ends: 1622 [2020-10-13 05:29:36,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-13 05:29:36,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2020-10-13 05:29:36,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1301. [2020-10-13 05:29:36,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1301 states. [2020-10-13 05:29:36,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1856 transitions. [2020-10-13 05:29:36,643 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1856 transitions. Word has length 58 [2020-10-13 05:29:36,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:29:36,645 INFO L479 AbstractCegarLoop]: Abstraction has 1301 states and 1856 transitions. [2020-10-13 05:29:36,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 05:29:36,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1856 transitions. [2020-10-13 05:29:36,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 05:29:36,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:29:36,648 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:29:36,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 05:29:36,648 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:29:36,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:29:36,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1484154685, now seen corresponding path program 1 times [2020-10-13 05:29:36,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:29:36,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169817749] [2020-10-13 05:29:36,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:29:36,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:36,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:36,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:36,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:36,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:36,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:36,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:36,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:36,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:36,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:36,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:36,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:36,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:36,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:37,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:37,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:37,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:37,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:37,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:37,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:37,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:37,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:37,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:37,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:37,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:37,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:38,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:38,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:41,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:41,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 05:29:41,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-13 05:29:41,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 05:29:41,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:41,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:29:41,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 05:29:41,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:41,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:41,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:29:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:41,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:41,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:41,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:29:41,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:41,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:29:41,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:41,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:29:41,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:41,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:29:41,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:41,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:29:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:41,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:41,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:41,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:41,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:41,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:41,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:41,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:41,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:41,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:41,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:41,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:41,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:43,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:46,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:46,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 05:29:46,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-13 05:29:46,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 05:29:46,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:46,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 05:29:46,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:29:46,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 05:29:46,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:46,864 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 05:29:46,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169817749] [2020-10-13 05:29:46,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:29:46,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 05:29:46,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154754288] [2020-10-13 05:29:46,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 05:29:46,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:29:46,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 05:29:46,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-13 05:29:46,866 INFO L87 Difference]: Start difference. First operand 1301 states and 1856 transitions. Second operand 8 states. [2020-10-13 05:29:47,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:29:47,826 INFO L93 Difference]: Finished difference Result 2242 states and 3165 transitions. [2020-10-13 05:29:47,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 05:29:47,827 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-10-13 05:29:47,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:29:47,834 INFO L225 Difference]: With dead ends: 2242 [2020-10-13 05:29:47,834 INFO L226 Difference]: Without dead ends: 1555 [2020-10-13 05:29:47,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-13 05:29:47,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2020-10-13 05:29:47,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1319. [2020-10-13 05:29:47,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1319 states. [2020-10-13 05:29:47,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1867 transitions. [2020-10-13 05:29:47,878 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1867 transitions. Word has length 59 [2020-10-13 05:29:47,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:29:47,878 INFO L479 AbstractCegarLoop]: Abstraction has 1319 states and 1867 transitions. [2020-10-13 05:29:47,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 05:29:47,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1867 transitions. [2020-10-13 05:29:47,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 05:29:47,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:29:47,881 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:29:47,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 05:29:47,882 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:29:47,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:29:47,882 INFO L82 PathProgramCache]: Analyzing trace with hash -313662180, now seen corresponding path program 1 times [2020-10-13 05:29:47,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:29:47,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925728126] [2020-10-13 05:29:47,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:29:47,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:47,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:47,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:47,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:48,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:48,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 05:29:48,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:29:48,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-13 05:29:48,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:48,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:29:48,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 05:29:48,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:48,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:48,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:29:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:48,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:48,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:48,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:29:48,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:48,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:29:48,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:48,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:29:48,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:48,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:29:48,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:48,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:29:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:48,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:48,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:48,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:48,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:48,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 05:29:48,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:29:48,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 05:29:48,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:48,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:29:48,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:29:48,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 05:29:48,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:48,181 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-13 05:29:48,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925728126] [2020-10-13 05:29:48,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:29:48,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 05:29:48,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947115045] [2020-10-13 05:29:48,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 05:29:48,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:29:48,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 05:29:48,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:29:48,183 INFO L87 Difference]: Start difference. First operand 1319 states and 1867 transitions. Second operand 5 states. [2020-10-13 05:29:48,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:29:48,265 INFO L93 Difference]: Finished difference Result 1351 states and 1905 transitions. [2020-10-13 05:29:48,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 05:29:48,266 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-10-13 05:29:48,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:29:48,270 INFO L225 Difference]: With dead ends: 1351 [2020-10-13 05:29:48,271 INFO L226 Difference]: Without dead ends: 754 [2020-10-13 05:29:48,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:29:48,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2020-10-13 05:29:48,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2020-10-13 05:29:48,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 754 states. [2020-10-13 05:29:48,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1042 transitions. [2020-10-13 05:29:48,306 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1042 transitions. Word has length 60 [2020-10-13 05:29:48,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:29:48,306 INFO L479 AbstractCegarLoop]: Abstraction has 754 states and 1042 transitions. [2020-10-13 05:29:48,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 05:29:48,306 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1042 transitions. [2020-10-13 05:29:48,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 05:29:48,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:29:48,308 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:29:48,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 05:29:48,309 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:29:48,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:29:48,309 INFO L82 PathProgramCache]: Analyzing trace with hash 2092039919, now seen corresponding path program 1 times [2020-10-13 05:29:48,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:29:48,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479528307] [2020-10-13 05:29:48,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:29:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:48,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:48,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:48,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 05:29:48,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:48,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 05:29:48,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:48,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:29:48,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 05:29:48,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:29:48,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:48,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:29:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:48,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:48,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:48,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:29:48,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:48,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:29:48,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:48,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:29:48,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:48,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:29:48,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:48,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:29:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:48,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:48,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:48,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 05:29:48,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:48,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 05:29:48,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:48,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:29:48,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:29:48,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 05:29:48,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:48,581 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-13 05:29:48,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479528307] [2020-10-13 05:29:48,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:29:48,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 05:29:48,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769996439] [2020-10-13 05:29:48,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 05:29:48,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:29:48,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 05:29:48,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:29:48,590 INFO L87 Difference]: Start difference. First operand 754 states and 1042 transitions. Second operand 5 states. [2020-10-13 05:29:48,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:29:48,624 INFO L93 Difference]: Finished difference Result 786 states and 1080 transitions. [2020-10-13 05:29:48,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 05:29:48,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-13 05:29:48,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:29:48,626 INFO L225 Difference]: With dead ends: 786 [2020-10-13 05:29:48,627 INFO L226 Difference]: Without dead ends: 431 [2020-10-13 05:29:48,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:29:48,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-10-13 05:29:48,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2020-10-13 05:29:48,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-10-13 05:29:48,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 598 transitions. [2020-10-13 05:29:48,645 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 598 transitions. Word has length 73 [2020-10-13 05:29:48,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:29:48,645 INFO L479 AbstractCegarLoop]: Abstraction has 431 states and 598 transitions. [2020-10-13 05:29:48,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 05:29:48,645 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 598 transitions. [2020-10-13 05:29:48,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 05:29:48,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:29:48,647 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:29:48,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 05:29:48,647 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:29:48,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:29:48,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1417842061, now seen corresponding path program 1 times [2020-10-13 05:29:48,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:29:48,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949092903] [2020-10-13 05:29:48,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:29:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 05:29:48,671 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 05:29:48,671 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 05:29:48,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 05:29:48,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 05:29:48 BoogieIcfgContainer [2020-10-13 05:29:48,742 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 05:29:48,745 INFO L168 Benchmark]: Toolchain (without parser) took 112667.99 ms. Allocated memory was 140.5 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 103.2 MB in the beginning and 669.3 MB in the end (delta: -566.1 MB). Peak memory consumption was 656.5 MB. Max. memory is 7.1 GB. [2020-10-13 05:29:48,746 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-13 05:29:48,751 INFO L168 Benchmark]: CACSL2BoogieTranslator took 467.51 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 103.0 MB in the beginning and 181.8 MB in the end (delta: -78.9 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-10-13 05:29:48,756 INFO L168 Benchmark]: Boogie Preprocessor took 42.58 ms. Allocated memory is still 202.9 MB. Free memory was 181.8 MB in the beginning and 179.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-10-13 05:29:48,756 INFO L168 Benchmark]: RCFGBuilder took 396.03 ms. Allocated memory is still 202.9 MB. Free memory was 178.8 MB in the beginning and 156.5 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-10-13 05:29:48,757 INFO L168 Benchmark]: TraceAbstraction took 111756.12 ms. Allocated memory was 202.9 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 156.5 MB in the beginning and 669.3 MB in the end (delta: -512.8 MB). Peak memory consumption was 647.5 MB. Max. memory is 7.1 GB. [2020-10-13 05:29:48,764 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 467.51 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 103.0 MB in the beginning and 181.8 MB in the end (delta: -78.9 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.58 ms. Allocated memory is still 202.9 MB. Free memory was 181.8 MB in the beginning and 179.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 396.03 ms. Allocated memory is still 202.9 MB. Free memory was 178.8 MB in the beginning and 156.5 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 111756.12 ms. Allocated memory was 202.9 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 156.5 MB in the beginning and 669.3 MB in the end (delta: -512.8 MB). Peak memory consumption was 647.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 97. Possible FailurePath: [L105] unsigned int a, b, r; [L107] b = __VERIFIER_nondet_uint() [L109] a = 234770789 [L111] CALL, EXPR mp_add(a, b) [L23] unsigned char a0, a1, a2, a3; [L24] unsigned char b0, b1, b2, b3; [L25] unsigned char r0, r1, r2, r3; [L26] unsigned short carry; [L27] unsigned short partial_sum; [L28] unsigned int r; [L29] unsigned char i; [L30] unsigned char na, nb; [L31] a0 = a [L32] a1 = a >> 8 [L33] a2 = a >> 16U [L34] a3 = a >> 24U [L35] b0 = b [L36] b1 = b >> 8U [L37] b2 = b >> 16U [L38] b3 = b >> 24U [L39] na = (unsigned char)4 [L40] COND FALSE !(a3 == (unsigned char)0) [L49] nb = (unsigned char)4 [L50] COND TRUE b3 == (unsigned char)0 [L51] nb = nb - 1 [L52] COND TRUE b2 == (unsigned char)0 [L53] nb = nb - 1 [L54] COND TRUE b1 == (unsigned char)0 [L55] nb = nb - 1 [L59] carry = (unsigned short)0 [L60] i = (unsigned char)0 [L61] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L62] partial_sum = carry [L63] carry = (unsigned short)0 [L64] COND TRUE i < na [L65] COND TRUE i == (unsigned char)0 [L65] partial_sum = partial_sum + a0 [L66] COND FALSE !(i == (unsigned char)1) [L67] COND FALSE !(i == (unsigned char)2) [L68] COND FALSE !(i == (unsigned char)3) [L70] COND TRUE i < nb [L71] COND TRUE i == (unsigned char)0 [L71] partial_sum = partial_sum + b0 [L72] COND FALSE !(i == (unsigned char)1) [L73] COND FALSE !(i == (unsigned char)2) [L74] COND FALSE !(i == (unsigned char)3) [L76] COND FALSE !(partial_sum > ((unsigned char)255)) [L80] COND TRUE i == (unsigned char)0 [L80] r0 = (unsigned char)partial_sum [L81] COND FALSE !(i == (unsigned char)1) [L82] COND FALSE !(i == (unsigned char)2) [L83] COND FALSE !(i == (unsigned char)3) [L85] i = i + (unsigned char)1 [L61] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L62] partial_sum = carry [L63] carry = (unsigned short)0 [L64] COND TRUE i < na [L65] COND FALSE !(i == (unsigned char)0) [L66] COND TRUE i == (unsigned char)1 [L66] partial_sum = partial_sum + a1 [L67] COND FALSE !(i == (unsigned char)2) [L68] COND FALSE !(i == (unsigned char)3) [L70] COND FALSE !(i < nb) [L76] COND FALSE !(partial_sum > ((unsigned char)255)) [L80] COND FALSE !(i == (unsigned char)0) [L81] COND TRUE i == (unsigned char)1 [L81] r1 = (unsigned char)partial_sum [L82] COND FALSE !(i == (unsigned char)2) [L83] COND FALSE !(i == (unsigned char)3) [L85] i = i + (unsigned char)1 [L61] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L62] partial_sum = carry [L63] carry = (unsigned short)0 [L64] COND TRUE i < na [L65] COND FALSE !(i == (unsigned char)0) [L66] COND FALSE !(i == (unsigned char)1) [L67] COND TRUE i == (unsigned char)2 [L67] partial_sum = partial_sum + a2 [L68] COND FALSE !(i == (unsigned char)3) [L70] COND FALSE !(i < nb) [L76] COND FALSE !(partial_sum > ((unsigned char)255)) [L80] COND FALSE !(i == (unsigned char)0) [L81] COND FALSE !(i == (unsigned char)1) [L82] COND TRUE i == (unsigned char)2 [L82] r2 = (unsigned char)partial_sum [L83] COND FALSE !(i == (unsigned char)3) [L85] i = i + (unsigned char)1 [L61] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L62] partial_sum = carry [L63] carry = (unsigned short)0 [L64] COND TRUE i < na [L65] COND FALSE !(i == (unsigned char)0) [L66] COND FALSE !(i == (unsigned char)1) [L67] COND FALSE !(i == (unsigned char)2) [L68] COND TRUE i == (unsigned char)3 [L68] partial_sum = partial_sum + a3 [L70] COND FALSE !(i < nb) [L76] COND FALSE !(partial_sum > ((unsigned char)255)) [L80] COND FALSE !(i == (unsigned char)0) [L81] COND FALSE !(i == (unsigned char)1) [L82] COND FALSE !(i == (unsigned char)2) [L83] COND TRUE i == (unsigned char)3 [L83] r3 = (unsigned char)partial_sum [L85] i = i + (unsigned char)1 [L61] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) [L88] COND FALSE !(i < (unsigned char)4) [L97] r = r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U) [L99] return r; [L111] RET, EXPR mp_add(a, b) [L111] r = mp_add(a, b) [L113] CALL __VERIFIER_assert(r == a + b) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 111.6s, OverallIterations: 19, TraceHistogramMax: 4, AutomataDifference: 7.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1380 SDtfs, 2745 SDslu, 2716 SDs, 0 SdLazy, 3776 SolverSat, 479 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 206 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1387occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 18 MinimizatonAttempts, 3186 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 103.1s InterpolantComputationTime, 879 NumberOfCodeBlocks, 879 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 782 ConstructedInterpolants, 0 QuantifiedInterpolants, 192481 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 14 PerfectInterpolantSequences, 218/222 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...