/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.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 05:27:59,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 05:27:59,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 05:27:59,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 05:27:59,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 05:27:59,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 05:27:59,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 05:27:59,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 05:27:59,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 05:27:59,608 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 05:27:59,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 05:27:59,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 05:27:59,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 05:27:59,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 05:27:59,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 05:27:59,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 05:27:59,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 05:27:59,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 05:27:59,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 05:27:59,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 05:27:59,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 05:27:59,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 05:27:59,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 05:27:59,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 05:27:59,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 05:27:59,651 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 05:27:59,651 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 05:27:59,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 05:27:59,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 05:27:59,653 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 05:27:59,654 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 05:27:59,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 05:27:59,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 05:27:59,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 05:27:59,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 05:27:59,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 05:27:59,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 05:27:59,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 05:27:59,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 05:27:59,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 05:27:59,664 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 05:27:59,665 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 05:27:59,693 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 05:27:59,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 05:27:59,694 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 05:27:59,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 05:27:59,695 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 05:27:59,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 05:27:59,695 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 05:27:59,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 05:27:59,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 05:27:59,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 05:27:59,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 05:27:59,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 05:27:59,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 05:27:59,696 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 05:27:59,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 05:27:59,697 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 05:27:59,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 05:27:59,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 05:27:59,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 05:27:59,698 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 05:27:59,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 05:27:59,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 05:27:59,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 05:27:59,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 05:27:59,699 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 05:27:59,699 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 05:27:59,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 05:27:59,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 05:27:59,699 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 05:27:59,699 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 05:28:00,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 05:28:00,035 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 05:28:00,039 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 05:28:00,041 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 05:28:00,041 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 05:28:00,042 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/byte_add-1.i [2020-10-13 05:28:00,108 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bde52acca/3132565890c644c5984635d2e9135487/FLAG2aff1f146 [2020-10-13 05:28:00,578 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 05:28:00,580 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/byte_add-1.i [2020-10-13 05:28:00,591 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bde52acca/3132565890c644c5984635d2e9135487/FLAG2aff1f146 [2020-10-13 05:28:00,948 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bde52acca/3132565890c644c5984635d2e9135487 [2020-10-13 05:28:00,955 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 05:28:00,957 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 05:28:00,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 05:28:00,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 05:28:00,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 05:28:00,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:28:00" (1/1) ... [2020-10-13 05:28:00,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eef8159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:00, skipping insertion in model container [2020-10-13 05:28:00,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:28:00" (1/1) ... [2020-10-13 05:28:00,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 05:28:00,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 05:28:01,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:28:01,227 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 05:28:01,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:28:01,362 INFO L208 MainTranslator]: Completed translation [2020-10-13 05:28:01,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:01 WrapperNode [2020-10-13 05:28:01,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 05:28:01,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 05:28:01,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 05:28:01,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 05:28:01,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:01" (1/1) ... [2020-10-13 05:28:01,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:01" (1/1) ... [2020-10-13 05:28:01,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:01" (1/1) ... [2020-10-13 05:28:01,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:01" (1/1) ... [2020-10-13 05:28:01,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:01" (1/1) ... [2020-10-13 05:28:01,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:01" (1/1) ... [2020-10-13 05:28:01,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:01" (1/1) ... [2020-10-13 05:28:01,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 05:28:01,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 05:28:01,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 05:28:01,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 05:28:01,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:01" (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 05:28:01,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 05:28:01,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 05:28:01,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 05:28:01,461 INFO L138 BoogieDeclarations]: Found implementation of procedure mp_add [2020-10-13 05:28:01,461 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 05:28:01,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 05:28:01,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-13 05:28:01,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 05:28:01,462 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-13 05:28:01,462 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-13 05:28:01,462 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-13 05:28:01,462 INFO L130 BoogieDeclarations]: Found specification of procedure mp_add [2020-10-13 05:28:01,463 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 05:28:01,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 05:28:01,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 05:28:01,845 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 05:28:01,846 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-13 05:28:01,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:28:01 BoogieIcfgContainer [2020-10-13 05:28:01,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 05:28:01,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 05:28:01,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 05:28:01,855 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 05:28:01,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:28:00" (1/3) ... [2020-10-13 05:28:01,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f65550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:28:01, skipping insertion in model container [2020-10-13 05:28:01,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:01" (2/3) ... [2020-10-13 05:28:01,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f65550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:28:01, skipping insertion in model container [2020-10-13 05:28:01,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:28:01" (3/3) ... [2020-10-13 05:28:01,868 INFO L109 eAbstractionObserver]: Analyzing ICFG byte_add-1.i [2020-10-13 05:28:01,883 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 05:28:01,890 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 05:28:01,904 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 05:28:01,928 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 05:28:01,928 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 05:28:01,928 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 05:28:01,929 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 05:28:01,929 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 05:28:01,929 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 05:28:01,929 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 05:28:01,929 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 05:28:01,946 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-13 05:28:01,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 05:28:01,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:01,954 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 05:28:01,955 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:01,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:01,962 INFO L82 PathProgramCache]: Analyzing trace with hash 397916932, now seen corresponding path program 1 times [2020-10-13 05:28:01,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:01,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985299253] [2020-10-13 05:28:01,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:02,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:02,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:02,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:02,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 05:28:02,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:28:02,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-13 05:28:02,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:02,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:02,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 05:28:02,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:02,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 05:28:02,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:02,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:02,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:02,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:02,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:02,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 05:28:02,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:02,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:02,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:02,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:02,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:02,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:28:02,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:02,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:02,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:02,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:02,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 05:28:02,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:28:02,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-13 05:28:02,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:02,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:28:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:02,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 05:28:02,554 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 05:28:02,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985299253] [2020-10-13 05:28:02,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:02,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-13 05:28:02,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238552640] [2020-10-13 05:28:02,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-13 05:28:02,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:02,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-13 05:28:02,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-13 05:28:02,583 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2020-10-13 05:28:02,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:02,612 INFO L93 Difference]: Finished difference Result 76 states and 112 transitions. [2020-10-13 05:28:02,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-13 05:28:02,614 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2020-10-13 05:28:02,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:02,625 INFO L225 Difference]: With dead ends: 76 [2020-10-13 05:28:02,625 INFO L226 Difference]: Without dead ends: 47 [2020-10-13 05:28:02,629 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 05:28:02,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-13 05:28:02,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-13 05:28:02,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 05:28:02,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 73 transitions. [2020-10-13 05:28:02,674 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 73 transitions. Word has length 21 [2020-10-13 05:28:02,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:02,674 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 73 transitions. [2020-10-13 05:28:02,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-13 05:28:02,675 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 73 transitions. [2020-10-13 05:28:02,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 05:28:02,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:02,676 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 05:28:02,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 05:28:02,677 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:02,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:02,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1531564698, now seen corresponding path program 1 times [2020-10-13 05:28:02,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:02,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596481363] [2020-10-13 05:28:02,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:02,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:02,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:02,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:03,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:03,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 05:28:03,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:28:03,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-13 05:28:03,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:03,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:03,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 05:28:03,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 05:28:03,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:03,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:03,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:03,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:03,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:03,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:03,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:03,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:03,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:03,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:03,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:03,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:03,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:03,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:28:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:03,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:03,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:03,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:03,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:03,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 05:28:03,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:28:03,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-13 05:28:03,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:03,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:03,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:28:03,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 05:28:03,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:03,297 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 05:28:03,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596481363] [2020-10-13 05:28:03,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:03,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 05:28:03,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212961005] [2020-10-13 05:28:03,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 05:28:03,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:03,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 05:28:03,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 05:28:03,302 INFO L87 Difference]: Start difference. First operand 47 states and 73 transitions. Second operand 3 states. [2020-10-13 05:28:03,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:03,541 INFO L93 Difference]: Finished difference Result 102 states and 169 transitions. [2020-10-13 05:28:03,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 05:28:03,542 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-13 05:28:03,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:03,544 INFO L225 Difference]: With dead ends: 102 [2020-10-13 05:28:03,544 INFO L226 Difference]: Without dead ends: 70 [2020-10-13 05:28:03,545 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 05:28:03,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-13 05:28:03,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-10-13 05:28:03,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-13 05:28:03,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 98 transitions. [2020-10-13 05:28:03,556 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 98 transitions. Word has length 21 [2020-10-13 05:28:03,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:03,557 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 98 transitions. [2020-10-13 05:28:03,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 05:28:03,557 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 98 transitions. [2020-10-13 05:28:03,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-13 05:28:03,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:03,559 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 05:28:03,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 05:28:03,559 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:03,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:03,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1473767205, now seen corresponding path program 1 times [2020-10-13 05:28:03,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:03,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611929148] [2020-10-13 05:28:03,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:03,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:03,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:03,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:03,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:03,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:03,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:03,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:03,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:03,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:04,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 05:28:04,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 05:28:04,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 616 [2020-10-13 05:28:04,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:04,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:28:04,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 05:28:04,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 05:28:04,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:04,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:04,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:04,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:04,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:04,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:04,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:04,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:04,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:04,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:04,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:04,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:28:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:04,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:04,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 05:28:04,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 05:28:04,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-10-13 05:28:04,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:04,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:28:04,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 05:28:04,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 05:28:04,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:04,591 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 05:28:04,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611929148] [2020-10-13 05:28:04,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:04,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 05:28:04,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766419017] [2020-10-13 05:28:04,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 05:28:04,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:04,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 05:28:04,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:28:04,594 INFO L87 Difference]: Start difference. First operand 68 states and 98 transitions. Second operand 4 states. [2020-10-13 05:28:04,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:04,887 INFO L93 Difference]: Finished difference Result 154 states and 230 transitions. [2020-10-13 05:28:04,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 05:28:04,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-13 05:28:04,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:04,892 INFO L225 Difference]: With dead ends: 154 [2020-10-13 05:28:04,892 INFO L226 Difference]: Without dead ends: 112 [2020-10-13 05:28:04,893 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 05:28:04,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-13 05:28:04,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 76. [2020-10-13 05:28:04,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-13 05:28:04,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 107 transitions. [2020-10-13 05:28:04,905 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 107 transitions. Word has length 27 [2020-10-13 05:28:04,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:04,905 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 107 transitions. [2020-10-13 05:28:04,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 05:28:04,906 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 107 transitions. [2020-10-13 05:28:04,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-13 05:28:04,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:04,907 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 05:28:04,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 05:28:04,908 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:04,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:04,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1469042964, now seen corresponding path program 1 times [2020-10-13 05:28:04,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:04,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936292665] [2020-10-13 05:28:04,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:04,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:05,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:05,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:05,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:05,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:05,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:05,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:05,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:05,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 05:28:05,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 05:28:05,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1064 [2020-10-13 05:28:05,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:05,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:28:05,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 05:28:05,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 05:28:05,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:06,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:06,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:06,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:06,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:06,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:06,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:06,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:06,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:06,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:06,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:06,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:06,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:28:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:06,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:06,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:06,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:06,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:06,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:06,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:06,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:06,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:06,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:06,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:06,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 05:28:06,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 05:28:06,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 656 [2020-10-13 05:28:06,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:06,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:28:06,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 05:28:06,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 05:28:06,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:06,763 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 05:28:06,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936292665] [2020-10-13 05:28:06,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:06,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 05:28:06,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678263323] [2020-10-13 05:28:06,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 05:28:06,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:06,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 05:28:06,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:28:06,766 INFO L87 Difference]: Start difference. First operand 76 states and 107 transitions. Second operand 5 states. [2020-10-13 05:28:06,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:06,996 INFO L93 Difference]: Finished difference Result 198 states and 297 transitions. [2020-10-13 05:28:06,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:28:06,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-10-13 05:28:06,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:07,000 INFO L225 Difference]: With dead ends: 198 [2020-10-13 05:28:07,000 INFO L226 Difference]: Without dead ends: 156 [2020-10-13 05:28:07,001 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 05:28:07,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-13 05:28:07,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 76. [2020-10-13 05:28:07,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-13 05:28:07,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 107 transitions. [2020-10-13 05:28:07,011 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 107 transitions. Word has length 28 [2020-10-13 05:28:07,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:07,012 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 107 transitions. [2020-10-13 05:28:07,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 05:28:07,012 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 107 transitions. [2020-10-13 05:28:07,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-13 05:28:07,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:07,014 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 05:28:07,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 05:28:07,014 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:07,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:07,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1874591770, now seen corresponding path program 1 times [2020-10-13 05:28:07,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:07,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871942269] [2020-10-13 05:28:07,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:07,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:07,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 05:28:07,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 05:28:07,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 788 [2020-10-13 05:28:07,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:07,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 05:28:07,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 05:28:07,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:07,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:07,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:07,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:07,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:07,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:07,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:07,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:07,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:07,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:07,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:07,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:07,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:28:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:07,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:08,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 05:28:08,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 05:28:08,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 625 [2020-10-13 05:28:08,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:08,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 05:28:08,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 05:28:08,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:08,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:08,563 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 05:28:08,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871942269] [2020-10-13 05:28:08,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:08,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 05:28:08,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646835627] [2020-10-13 05:28:08,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 05:28:08,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:08,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 05:28:08,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 05:28:08,568 INFO L87 Difference]: Start difference. First operand 76 states and 107 transitions. Second operand 7 states. [2020-10-13 05:28:09,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:09,791 INFO L93 Difference]: Finished difference Result 286 states and 453 transitions. [2020-10-13 05:28:09,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 05:28:09,792 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-10-13 05:28:09,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:09,795 INFO L225 Difference]: With dead ends: 286 [2020-10-13 05:28:09,795 INFO L226 Difference]: Without dead ends: 244 [2020-10-13 05:28:09,796 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 05:28:09,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-13 05:28:09,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 207. [2020-10-13 05:28:09,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-13 05:28:09,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 313 transitions. [2020-10-13 05:28:09,815 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 313 transitions. Word has length 29 [2020-10-13 05:28:09,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:09,815 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 313 transitions. [2020-10-13 05:28:09,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 05:28:09,815 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 313 transitions. [2020-10-13 05:28:09,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-13 05:28:09,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:09,818 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 05:28:09,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 05:28:09,818 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:09,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:09,819 INFO L82 PathProgramCache]: Analyzing trace with hash 214387631, now seen corresponding path program 1 times [2020-10-13 05:28:09,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:09,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176502441] [2020-10-13 05:28:09,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:09,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:09,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:09,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:09,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:09,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:11,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:11,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 05:28:11,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 05:28:11,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1757 [2020-10-13 05:28:11,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:11,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:28:11,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 05:28:11,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:28:11,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:11,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:11,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:11,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:11,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:11,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:11,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:28:11,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:11,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:11,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:11,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:11,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:11,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:28:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:11,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:11,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:11,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:11,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:11,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:11,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:11,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:11,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:11,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:11,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:13,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 05:28:13,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 05:28:13,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1535 [2020-10-13 05:28:13,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:13,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:28:13,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:28:13,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:28:13,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:13,249 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 05:28:13,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176502441] [2020-10-13 05:28:13,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:13,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 05:28:13,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656279341] [2020-10-13 05:28:13,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 05:28:13,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:13,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 05:28:13,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:28:13,253 INFO L87 Difference]: Start difference. First operand 207 states and 313 transitions. Second operand 4 states. [2020-10-13 05:28:13,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:13,513 INFO L93 Difference]: Finished difference Result 586 states and 893 transitions. [2020-10-13 05:28:13,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 05:28:13,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-13 05:28:13,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:13,516 INFO L225 Difference]: With dead ends: 586 [2020-10-13 05:28:13,516 INFO L226 Difference]: Without dead ends: 418 [2020-10-13 05:28:13,518 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 05:28:13,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-10-13 05:28:13,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 223. [2020-10-13 05:28:13,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-10-13 05:28:13,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 332 transitions. [2020-10-13 05:28:13,542 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 332 transitions. Word has length 34 [2020-10-13 05:28:13,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:13,543 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 332 transitions. [2020-10-13 05:28:13,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 05:28:13,545 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 332 transitions. [2020-10-13 05:28:13,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-13 05:28:13,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:13,553 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 05:28:13,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 05:28:13,553 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:13,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:13,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1041972219, now seen corresponding path program 1 times [2020-10-13 05:28:13,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:13,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127395142] [2020-10-13 05:28:13,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:13,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:14,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:14,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:14,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:14,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:14,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:14,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:15,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:15,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 05:28:15,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 05:28:15,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1843 [2020-10-13 05:28:15,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:15,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:28:15,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 05:28:15,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:28:15,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:15,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:15,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:15,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:15,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:15,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:15,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:15,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:15,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:15,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:15,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:15,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:15,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:15,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:28:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:15,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:15,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:15,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:15,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:15,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:15,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:15,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:15,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:15,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:15,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:15,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:15,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:15,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:15,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:16,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:16,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:16,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:16,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:16,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:16,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 05:28:16,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 05:28:16,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1449 [2020-10-13 05:28:16,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:16,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:28:16,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 05:28:16,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:28:16,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:16,949 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 05:28:16,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127395142] [2020-10-13 05:28:16,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:16,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 05:28:16,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926508042] [2020-10-13 05:28:16,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 05:28:16,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:16,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 05:28:16,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:28:16,964 INFO L87 Difference]: Start difference. First operand 223 states and 332 transitions. Second operand 4 states. [2020-10-13 05:28:17,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:17,296 INFO L93 Difference]: Finished difference Result 616 states and 984 transitions. [2020-10-13 05:28:17,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 05:28:17,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-13 05:28:17,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:17,300 INFO L225 Difference]: With dead ends: 616 [2020-10-13 05:28:17,300 INFO L226 Difference]: Without dead ends: 475 [2020-10-13 05:28:17,301 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 05:28:17,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2020-10-13 05:28:17,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 312. [2020-10-13 05:28:17,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-10-13 05:28:17,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 459 transitions. [2020-10-13 05:28:17,318 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 459 transitions. Word has length 35 [2020-10-13 05:28:17,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:17,319 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 459 transitions. [2020-10-13 05:28:17,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 05:28:17,319 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 459 transitions. [2020-10-13 05:28:17,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 05:28:17,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:17,321 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 05:28:17,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 05:28:17,322 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:17,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:17,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1396867702, now seen corresponding path program 1 times [2020-10-13 05:28:17,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:17,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957636136] [2020-10-13 05:28:17,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:17,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:18,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:18,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:18,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:18,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:18,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:18,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:18,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:18,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:18,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:18,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:19,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:19,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:19,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:20,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:20,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:20,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:20,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:20,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:20,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:20,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:20,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:20,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:20,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:20,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:22,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 05:28:22,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 38 [2020-10-13 05:28:22,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 05:28:22,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:22,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:28:22,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 05:28:22,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 05:28:22,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:22,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:22,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:22,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:22,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:22,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:22,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:22,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:22,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:22,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:22,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:22,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:28:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:22,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:25,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:25,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:27,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 05:28:27,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 38 [2020-10-13 05:28:27,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 05:28:27,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:27,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:28:27,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 05:28:27,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 05:28:27,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:27,413 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 05:28:27,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957636136] [2020-10-13 05:28:27,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:27,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 05:28:27,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370465716] [2020-10-13 05:28:27,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 05:28:27,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:27,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 05:28:27,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:28:27,416 INFO L87 Difference]: Start difference. First operand 312 states and 459 transitions. Second operand 4 states. [2020-10-13 05:28:27,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:27,788 INFO L93 Difference]: Finished difference Result 870 states and 1321 transitions. [2020-10-13 05:28:27,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 05:28:27,788 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-13 05:28:27,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:27,791 INFO L225 Difference]: With dead ends: 870 [2020-10-13 05:28:27,791 INFO L226 Difference]: Without dead ends: 602 [2020-10-13 05:28:27,792 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 05:28:27,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-10-13 05:28:27,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 377. [2020-10-13 05:28:27,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-10-13 05:28:27,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 563 transitions. [2020-10-13 05:28:27,813 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 563 transitions. Word has length 41 [2020-10-13 05:28:27,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:27,814 INFO L479 AbstractCegarLoop]: Abstraction has 377 states and 563 transitions. [2020-10-13 05:28:27,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 05:28:27,814 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 563 transitions. [2020-10-13 05:28:27,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 05:28:27,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:27,819 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 05:28:27,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 05:28:27,820 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:27,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:27,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1306744213, now seen corresponding path program 1 times [2020-10-13 05:28:27,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:27,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379787625] [2020-10-13 05:28:27,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:27,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:28,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:28,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:28,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:28,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:28,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:28,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:28,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:28,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:28,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:28,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:28,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:28,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:28,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:28,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:28,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:28,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:28,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:28,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:29,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:29,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:29,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:29,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:29,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:29,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:29,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:29,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:31,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:31,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:31,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:31,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:31,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:31,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:31,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:32,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 05:28:32,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 55 [2020-10-13 05:28:32,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 05:28:32,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:32,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:28:32,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 05:28:32,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 05:28:32,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:32,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:32,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:32,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:32,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:32,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:28:32,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:32,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:32,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:32,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:32,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:32,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:28:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:32,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:37,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 05:28:37,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 52 [2020-10-13 05:28:37,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 05:28:37,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:37,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:28:37,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 05:28:37,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 05:28:37,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:37,958 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 05:28:37,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379787625] [2020-10-13 05:28:37,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:37,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 05:28:37,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298646618] [2020-10-13 05:28:37,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 05:28:37,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:37,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 05:28:37,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:28:37,964 INFO L87 Difference]: Start difference. First operand 377 states and 563 transitions. Second operand 4 states. [2020-10-13 05:28:38,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:38,288 INFO L93 Difference]: Finished difference Result 1030 states and 1555 transitions. [2020-10-13 05:28:38,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 05:28:38,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-13 05:28:38,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:38,293 INFO L225 Difference]: With dead ends: 1030 [2020-10-13 05:28:38,294 INFO L226 Difference]: Without dead ends: 691 [2020-10-13 05:28:38,295 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 05:28:38,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-10-13 05:28:38,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 398. [2020-10-13 05:28:38,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-10-13 05:28:38,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 581 transitions. [2020-10-13 05:28:38,311 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 581 transitions. Word has length 47 [2020-10-13 05:28:38,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:38,313 INFO L479 AbstractCegarLoop]: Abstraction has 398 states and 581 transitions. [2020-10-13 05:28:38,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 05:28:38,314 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 581 transitions. [2020-10-13 05:28:38,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 05:28:38,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:38,315 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 05:28:38,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 05:28:38,316 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:38,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:38,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1048578775, now seen corresponding path program 1 times [2020-10-13 05:28:38,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:38,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621925205] [2020-10-13 05:28:38,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:38,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:39,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... 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[2020-10-13 05:28:42,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:43,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 05:28:43,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 111 [2020-10-13 05:28:43,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 05:28:43,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:43,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:28:43,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 05:28:43,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 05:28:43,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:43,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:43,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:43,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:43,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:43,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:28:43,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:43,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:43,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:43,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:28:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:43,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... 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[2020-10-13 05:28:45,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:46,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:46,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:48,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 05:28:48,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 77 [2020-10-13 05:28:48,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 05:28:48,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:48,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:28:48,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 05:28:48,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 05:28:48,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:48,481 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 05:28:48,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621925205] [2020-10-13 05:28:48,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:48,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 05:28:48,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652832305] [2020-10-13 05:28:48,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 05:28:48,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:48,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 05:28:48,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:28:48,485 INFO L87 Difference]: Start difference. First operand 398 states and 581 transitions. Second operand 6 states. [2020-10-13 05:28:48,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:48,731 INFO L93 Difference]: Finished difference Result 822 states and 1211 transitions. [2020-10-13 05:28:48,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:28:48,731 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2020-10-13 05:28:48,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:48,734 INFO L225 Difference]: With dead ends: 822 [2020-10-13 05:28:48,734 INFO L226 Difference]: Without dead ends: 458 [2020-10-13 05:28:48,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:28:48,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2020-10-13 05:28:48,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 424. [2020-10-13 05:28:48,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2020-10-13 05:28:48,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 608 transitions. [2020-10-13 05:28:48,757 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 608 transitions. Word has length 47 [2020-10-13 05:28:48,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:48,757 INFO L479 AbstractCegarLoop]: Abstraction has 424 states and 608 transitions. [2020-10-13 05:28:48,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 05:28:48,757 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 608 transitions. [2020-10-13 05:28:48,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 05:28:48,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:48,759 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 05:28:48,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 05:28:48,760 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:48,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:48,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1636946980, now seen corresponding path program 1 times [2020-10-13 05:28:48,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:48,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856639951] [2020-10-13 05:28:48,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:48,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:53,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 05:28:53,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 67 [2020-10-13 05:28:53,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 05:28:53,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:53,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:28:53,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 05:28:53,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 05:28:53,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:53,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:53,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:53,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:53,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:53,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:28:53,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:53,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:53,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:53,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:53,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:53,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:28:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:53,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:55,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:55,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:55,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:57,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:57,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:57,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:58,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:58,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 05:28:58,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 44 [2020-10-13 05:28:58,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 05:28:58,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:58,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:28:58,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:28:58,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 05:28:58,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:58,860 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 05:28:58,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856639951] [2020-10-13 05:28:58,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:58,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 05:28:58,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26683499] [2020-10-13 05:28:58,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 05:28:58,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:58,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 05:28:58,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:28:58,862 INFO L87 Difference]: Start difference. First operand 424 states and 608 transitions. Second operand 5 states. [2020-10-13 05:28:59,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:59,340 INFO L93 Difference]: Finished difference Result 1682 states and 2396 transitions. [2020-10-13 05:28:59,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:28:59,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-10-13 05:28:59,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:59,348 INFO L225 Difference]: With dead ends: 1682 [2020-10-13 05:28:59,348 INFO L226 Difference]: Without dead ends: 1304 [2020-10-13 05:28:59,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 05:28:59,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2020-10-13 05:28:59,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 424. [2020-10-13 05:28:59,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2020-10-13 05:28:59,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 608 transitions. [2020-10-13 05:28:59,377 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 608 transitions. Word has length 53 [2020-10-13 05:28:59,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:59,378 INFO L479 AbstractCegarLoop]: Abstraction has 424 states and 608 transitions. [2020-10-13 05:28:59,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 05:28:59,378 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 608 transitions. [2020-10-13 05:28:59,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 05:28:59,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:59,379 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 05:28:59,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 05:28:59,380 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:59,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:59,380 INFO L82 PathProgramCache]: Analyzing trace with hash 313867515, now seen corresponding path program 1 times [2020-10-13 05:28:59,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:59,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089873687] [2020-10-13 05:28:59,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:59,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:59,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:59,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:04,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:04,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:04,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:04,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:04,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:04,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:04,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:04,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 05:29:04,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 104 [2020-10-13 05:29:04,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 05:29:04,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:04,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 05:29:04,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 05:29:04,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 05:29:04,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:04,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:29:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:04,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:04,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:04,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:29:04,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:04,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:29:04,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:04,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:29:04,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:04,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:29:04,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:04,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:29:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:04,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:04,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:04,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:04,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:04,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:04,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:04,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:04,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:04,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:04,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:04,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:04,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:04,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:04,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:04,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:04,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:09,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:09,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:09,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:09,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:09,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 05:29:09,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 135 [2020-10-13 05:29:09,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 05:29:09,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:09,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 05:29:09,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:29:09,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 05:29:09,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:09,498 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 05:29:09,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089873687] [2020-10-13 05:29:09,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:29:09,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 05:29:09,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344506833] [2020-10-13 05:29:09,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 05:29:09,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:29:09,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 05:29:09,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 05:29:09,500 INFO L87 Difference]: Start difference. First operand 424 states and 608 transitions. Second operand 7 states. [2020-10-13 05:29:10,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:29:10,587 INFO L93 Difference]: Finished difference Result 2104 states and 3132 transitions. [2020-10-13 05:29:10,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 05:29:10,587 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-10-13 05:29:10,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:29:10,605 INFO L225 Difference]: With dead ends: 2104 [2020-10-13 05:29:10,605 INFO L226 Difference]: Without dead ends: 1726 [2020-10-13 05:29:10,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 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 05:29:10,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2020-10-13 05:29:10,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1312. [2020-10-13 05:29:10,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1312 states. [2020-10-13 05:29:10,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1920 transitions. [2020-10-13 05:29:10,672 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1920 transitions. Word has length 54 [2020-10-13 05:29:10,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:29:10,672 INFO L479 AbstractCegarLoop]: Abstraction has 1312 states and 1920 transitions. [2020-10-13 05:29:10,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 05:29:10,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1920 transitions. [2020-10-13 05:29:10,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 05:29:10,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:29:10,676 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 05:29:10,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 05:29:10,676 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:29:10,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:29:10,677 INFO L82 PathProgramCache]: Analyzing trace with hash -705021934, now seen corresponding path program 1 times [2020-10-13 05:29:10,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:29:10,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284988325] [2020-10-13 05:29:10,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:29:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:10,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:12,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:12,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:12,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:12,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:12,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:12,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:12,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:12,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:12,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:12,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:12,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:12,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:12,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:13,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:15,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 05:29:15,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 38 [2020-10-13 05:29:15,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 05:29:15,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:15,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:29:15,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 05:29:15,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 05:29:15,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:15,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:29:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:15,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:15,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:29:15,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:15,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:29:15,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:15,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:29:15,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:15,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:29:15,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:15,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:29:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:15,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:16,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:16,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:16,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:16,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:16,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:16,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:16,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:16,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:16,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:16,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:16,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:16,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:16,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:20,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:20,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 05:29:20,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 38 [2020-10-13 05:29:20,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 05:29:20,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:20,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:29:20,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 05:29:20,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 05:29:20,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:20,842 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 05:29:20,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284988325] [2020-10-13 05:29:20,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:29:20,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 05:29:20,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281666774] [2020-10-13 05:29:20,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 05:29:20,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:29:20,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 05:29:20,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:29:20,844 INFO L87 Difference]: Start difference. First operand 1312 states and 1920 transitions. Second operand 5 states. [2020-10-13 05:29:21,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:29:21,259 INFO L93 Difference]: Finished difference Result 1832 states and 2620 transitions. [2020-10-13 05:29:21,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:29:21,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2020-10-13 05:29:21,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:29:21,267 INFO L225 Difference]: With dead ends: 1832 [2020-10-13 05:29:21,267 INFO L226 Difference]: Without dead ends: 1457 [2020-10-13 05:29:21,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 05:29:21,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2020-10-13 05:29:21,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1291. [2020-10-13 05:29:21,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1291 states. [2020-10-13 05:29:21,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1876 transitions. [2020-10-13 05:29:21,315 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1876 transitions. Word has length 56 [2020-10-13 05:29:21,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:29:21,316 INFO L479 AbstractCegarLoop]: Abstraction has 1291 states and 1876 transitions. [2020-10-13 05:29:21,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 05:29:21,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1876 transitions. [2020-10-13 05:29:21,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 05:29:21,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:29:21,319 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 05:29:21,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 05:29:21,320 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:29:21,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:29:21,320 INFO L82 PathProgramCache]: Analyzing trace with hash -708856199, now seen corresponding path program 1 times [2020-10-13 05:29:21,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:29:21,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998554256] [2020-10-13 05:29:21,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:29:21,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:21,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:21,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:22,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:22,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:22,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:22,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:22,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:22,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:22,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:22,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:22,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:23,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:23,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:23,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:23,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:23,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:23,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:23,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:25,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:25,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:25,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:25,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:25,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:26,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 05:29:26,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 45 [2020-10-13 05:29:26,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 05:29:26,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:26,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:29:26,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 05:29:26,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 05:29:26,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:26,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:29:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:26,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:26,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:29:26,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:26,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:29:26,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:26,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:29:26,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:26,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:29:26,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:26,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:29:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:26,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:27,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:27,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:27,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:27,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:27,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:27,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:27,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:27,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:27,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:27,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:27,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:27,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:28,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:28,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:29,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:29,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:29,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:29,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:29,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:29,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:29,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:31,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:31,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 05:29:31,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 45 [2020-10-13 05:29:31,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 05:29:31,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:31,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 05:29:31,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 05:29:31,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 05:29:31,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:31,563 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 05:29:31,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1998554256] [2020-10-13 05:29:31,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:29:31,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 05:29:31,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931164136] [2020-10-13 05:29:31,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 05:29:31,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:29:31,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 05:29:31,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 05:29:31,567 INFO L87 Difference]: Start difference. First operand 1291 states and 1876 transitions. Second operand 7 states. [2020-10-13 05:29:33,825 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 49 DAG size of output: 20 [2020-10-13 05:29:36,900 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 43 DAG size of output: 17 [2020-10-13 05:29:37,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:29:37,771 INFO L93 Difference]: Finished difference Result 2592 states and 3715 transitions. [2020-10-13 05:29:37,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 05:29:37,772 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-10-13 05:29:37,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:29:37,788 INFO L225 Difference]: With dead ends: 2592 [2020-10-13 05:29:37,788 INFO L226 Difference]: Without dead ends: 1930 [2020-10-13 05:29:37,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-10-13 05:29:37,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1930 states. [2020-10-13 05:29:37,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1930 to 1356. [2020-10-13 05:29:37,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1356 states. [2020-10-13 05:29:37,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 1966 transitions. [2020-10-13 05:29:37,869 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 1966 transitions. Word has length 57 [2020-10-13 05:29:37,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:29:37,869 INFO L479 AbstractCegarLoop]: Abstraction has 1356 states and 1966 transitions. [2020-10-13 05:29:37,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 05:29:37,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 1966 transitions. [2020-10-13 05:29:37,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 05:29:37,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:29:37,872 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 05:29:37,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 05:29:37,873 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:29:37,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:29:37,873 INFO L82 PathProgramCache]: Analyzing trace with hash -569962265, now seen corresponding path program 1 times [2020-10-13 05:29:37,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:29:37,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69429231] [2020-10-13 05:29:37,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:29:37,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:37,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:37,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:37,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:37,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:37,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:38,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:38,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:38,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:38,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:38,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:38,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:38,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:38,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:38,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:38,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:38,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:38,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:38,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:39,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:39,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:42,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 05:29:42,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-13 05:29:42,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 05:29:42,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:42,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:29:42,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 05:29:42,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 05:29:42,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:42,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:29:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:42,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:42,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:29:42,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:42,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:29:42,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:42,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:29:42,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:29:42,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:42,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:29:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:42,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:42,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:43,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:43,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:43,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:43,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:43,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:43,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:43,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:44,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:44,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:44,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:47,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:47,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 05:29:47,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-13 05:29:47,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 05:29:47,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:47,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:29:47,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:29:47,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 05:29:47,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:48,014 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 05:29:48,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69429231] [2020-10-13 05:29:48,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:29:48,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 05:29:48,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765353882] [2020-10-13 05:29:48,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 05:29:48,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:29:48,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 05:29:48,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:29:48,016 INFO L87 Difference]: Start difference. First operand 1356 states and 1966 transitions. Second operand 5 states. [2020-10-13 05:29:48,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:29:48,420 INFO L93 Difference]: Finished difference Result 1880 states and 2690 transitions. [2020-10-13 05:29:48,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 05:29:48,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-13 05:29:48,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:29:48,430 INFO L225 Difference]: With dead ends: 1880 [2020-10-13 05:29:48,430 INFO L226 Difference]: Without dead ends: 1496 [2020-10-13 05:29:48,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 05:29:48,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2020-10-13 05:29:48,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1420. [2020-10-13 05:29:48,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1420 states. [2020-10-13 05:29:48,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 2034 transitions. [2020-10-13 05:29:48,482 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 2034 transitions. Word has length 58 [2020-10-13 05:29:48,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:29:48,483 INFO L479 AbstractCegarLoop]: Abstraction has 1420 states and 2034 transitions. [2020-10-13 05:29:48,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 05:29:48,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 2034 transitions. [2020-10-13 05:29:48,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 05:29:48,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:29:48,489 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 05:29:48,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 05:29:48,489 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:29:48,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:29:48,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1484154685, now seen corresponding path program 1 times [2020-10-13 05:29:48,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:29:48,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046002572] [2020-10-13 05:29:48,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:29:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:48,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:48,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:48,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:48,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:48,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:48,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:48,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:48,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:48,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:48,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:48,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:48,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:48,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:49,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:50,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:50,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:50,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:50,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:50,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:50,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:50,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:50,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:50,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:51,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:53,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:53,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:53,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:53,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 05:29:53,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 26 [2020-10-13 05:29:53,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 05:29:53,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:53,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 05:29:53,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 05:29:53,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 05:29:53,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:53,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:29:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:53,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:53,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:53,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:29:53,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:53,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:29:53,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:53,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:29:53,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:53,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:29:53,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:53,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:29:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:53,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:53,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:53,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:53,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:53,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:53,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:53,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:53,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:53,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:53,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:53,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:53,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:53,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:53,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:53,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:53,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:54,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:54,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:54,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:54,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:54,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:54,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:54,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:55,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:55,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:55,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:58,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:58,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 05:29:58,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 26 [2020-10-13 05:29:58,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 05:29:58,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:58,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:29:58,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:29:58,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 05:29:58,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:58,598 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 05:29:58,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046002572] [2020-10-13 05:29:58,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:29:58,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 05:29:58,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811223074] [2020-10-13 05:29:58,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 05:29:58,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:29:58,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 05:29:58,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:29:58,600 INFO L87 Difference]: Start difference. First operand 1420 states and 2034 transitions. Second operand 6 states. [2020-10-13 05:29:59,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:29:59,419 INFO L93 Difference]: Finished difference Result 2254 states and 3234 transitions. [2020-10-13 05:29:59,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 05:29:59,424 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-10-13 05:29:59,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:29:59,430 INFO L225 Difference]: With dead ends: 2254 [2020-10-13 05:29:59,430 INFO L226 Difference]: Without dead ends: 1533 [2020-10-13 05:29:59,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 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 05:29:59,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2020-10-13 05:29:59,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1359. [2020-10-13 05:29:59,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1359 states. [2020-10-13 05:29:59,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1941 transitions. [2020-10-13 05:29:59,486 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1941 transitions. Word has length 59 [2020-10-13 05:29:59,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:29:59,487 INFO L479 AbstractCegarLoop]: Abstraction has 1359 states and 1941 transitions. [2020-10-13 05:29:59,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 05:29:59,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1941 transitions. [2020-10-13 05:29:59,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 05:29:59,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:29:59,493 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 05:29:59,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 05:29:59,493 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:29:59,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:29:59,494 INFO L82 PathProgramCache]: Analyzing trace with hash -313662180, now seen corresponding path program 1 times [2020-10-13 05:29:59,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:29:59,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525181010] [2020-10-13 05:29:59,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:29:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 05:29:59,506 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 05:29:59,507 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 05:29:59,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 05:29:59,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 05:29:59 BoogieIcfgContainer [2020-10-13 05:29:59,559 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 05:29:59,561 INFO L168 Benchmark]: Toolchain (without parser) took 118604.17 ms. Allocated memory was 140.5 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 101.7 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 207.6 MB. Max. memory is 7.1 GB. [2020-10-13 05:29:59,562 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-10-13 05:29:59,563 INFO L168 Benchmark]: CACSL2BoogieTranslator took 405.43 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.7 MB in the beginning and 182.2 MB in the end (delta: -80.5 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-10-13 05:29:59,563 INFO L168 Benchmark]: Boogie Preprocessor took 39.17 ms. Allocated memory is still 203.9 MB. Free memory was 182.2 MB in the beginning and 180.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-13 05:29:59,564 INFO L168 Benchmark]: RCFGBuilder took 447.59 ms. Allocated memory is still 203.9 MB. Free memory was 180.4 MB in the beginning and 158.3 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-10-13 05:29:59,565 INFO L168 Benchmark]: TraceAbstraction took 117707.57 ms. Allocated memory was 203.9 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 157.3 MB in the beginning and 1.1 GB in the end (delta: -984.1 MB). Peak memory consumption was 199.8 MB. Max. memory is 7.1 GB. [2020-10-13 05:29:59,568 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 405.43 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.7 MB in the beginning and 182.2 MB in the end (delta: -80.5 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 39.17 ms. Allocated memory is still 203.9 MB. Free memory was 182.2 MB in the beginning and 180.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 447.59 ms. Allocated memory is still 203.9 MB. Free memory was 180.4 MB in the beginning and 158.3 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 117707.57 ms. Allocated memory was 203.9 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 157.3 MB in the beginning and 1.1 GB in the end (delta: -984.1 MB). Peak memory consumption was 199.8 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] a = __VERIFIER_nondet_uint() [L108] b = __VERIFIER_nondet_uint() [L110] 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 TRUE a3 == (unsigned char)0 [L41] na = na - 1 [L42] COND TRUE a2 == (unsigned char)0 [L43] na = na - 1 [L44] COND TRUE a1 == (unsigned char)0 [L45] na = na - 1 [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)254)) [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 FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) [L88] COND TRUE i < (unsigned char)4 [L89] COND FALSE !(i == (unsigned char)0) [L90] COND TRUE i == (unsigned char)1 [L90] r1 = (unsigned char)0 [L91] COND FALSE !(i == (unsigned char)2) [L92] COND FALSE !(i == (unsigned char)3) [L94] i = i + (unsigned char)1 [L88] COND TRUE i < (unsigned char)4 [L89] COND FALSE !(i == (unsigned char)0) [L90] COND FALSE !(i == (unsigned char)1) [L91] COND TRUE i == (unsigned char)2 [L91] r2 = (unsigned char)0 [L92] COND FALSE !(i == (unsigned char)3) [L94] i = i + (unsigned char)1 [L88] COND TRUE i < (unsigned char)4 [L89] COND FALSE !(i == (unsigned char)0) [L90] COND FALSE !(i == (unsigned char)1) [L91] COND FALSE !(i == (unsigned char)2) [L92] COND TRUE i == (unsigned char)3 [L92] r3 = (unsigned char)0 [L94] i = i + (unsigned char)1 [L88] COND FALSE !(i < (unsigned char)4) [L97] r = r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U) [L99] return r; [L110] RET, EXPR mp_add(a, b) [L110] r = mp_add(a, b) [L112] 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: 117.6s, OverallIterations: 17, TraceHistogramMax: 3, AutomataDifference: 13.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1232 SDtfs, 2568 SDslu, 2166 SDs, 0 SdLazy, 3671 SolverSat, 449 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 187 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1420occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 16 MinimizatonAttempts, 3349 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 103.3s InterpolantComputationTime, 727 NumberOfCodeBlocks, 727 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 651 ConstructedInterpolants, 0 QuantifiedInterpolants, 150484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 12 PerfectInterpolantSequences, 153/157 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...