/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/array-crafted/bor3.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 04:30:03,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 04:30:03,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 04:30:03,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 04:30:03,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 04:30:03,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 04:30:03,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 04:30:03,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 04:30:03,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 04:30:03,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 04:30:03,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 04:30:03,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 04:30:03,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 04:30:03,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 04:30:03,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 04:30:03,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 04:30:03,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 04:30:03,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 04:30:03,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 04:30:03,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 04:30:03,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 04:30:03,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 04:30:03,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 04:30:03,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 04:30:03,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 04:30:03,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 04:30:03,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 04:30:03,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 04:30:03,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 04:30:03,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 04:30:03,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 04:30:03,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 04:30:03,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 04:30:03,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 04:30:03,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 04:30:03,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 04:30:03,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 04:30:03,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 04:30:03,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 04:30:03,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 04:30:03,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 04:30:03,423 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 04:30:03,449 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 04:30:03,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 04:30:03,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 04:30:03,451 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 04:30:03,451 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 04:30:03,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 04:30:03,451 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 04:30:03,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 04:30:03,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 04:30:03,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 04:30:03,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 04:30:03,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 04:30:03,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 04:30:03,453 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 04:30:03,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 04:30:03,453 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 04:30:03,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 04:30:03,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 04:30:03,454 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 04:30:03,454 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 04:30:03,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 04:30:03,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 04:30:03,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 04:30:03,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 04:30:03,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 04:30:03,456 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 04:30:03,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 04:30:03,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 04:30:03,456 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 04:30:03,456 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 04:30:03,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 04:30:03,756 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 04:30:03,760 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 04:30:03,762 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 04:30:03,762 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 04:30:03,763 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bor3.i [2020-10-13 04:30:03,829 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6d52d7bd/2d72a631e6894ea09f5c443f8cf22165/FLAG2dbb4ba9d [2020-10-13 04:30:04,280 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 04:30:04,281 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/bor3.i [2020-10-13 04:30:04,289 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6d52d7bd/2d72a631e6894ea09f5c443f8cf22165/FLAG2dbb4ba9d [2020-10-13 04:30:04,648 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6d52d7bd/2d72a631e6894ea09f5c443f8cf22165 [2020-10-13 04:30:04,658 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 04:30:04,660 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 04:30:04,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 04:30:04,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 04:30:04,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 04:30:04,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:30:04" (1/1) ... [2020-10-13 04:30:04,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@424d9305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:04, skipping insertion in model container [2020-10-13 04:30:04,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:30:04" (1/1) ... [2020-10-13 04:30:04,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 04:30:04,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 04:30:04,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 04:30:04,977 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 04:30:05,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 04:30:05,031 INFO L208 MainTranslator]: Completed translation [2020-10-13 04:30:05,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:05 WrapperNode [2020-10-13 04:30:05,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 04:30:05,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 04:30:05,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 04:30:05,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 04:30:05,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:05" (1/1) ... [2020-10-13 04:30:05,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:05" (1/1) ... [2020-10-13 04:30:05,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:05" (1/1) ... [2020-10-13 04:30:05,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:05" (1/1) ... [2020-10-13 04:30:05,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:05" (1/1) ... [2020-10-13 04:30:05,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:05" (1/1) ... [2020-10-13 04:30:05,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:05" (1/1) ... [2020-10-13 04:30:05,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 04:30:05,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 04:30:05,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 04:30:05,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 04:30:05,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:05" (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 04:30:05,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 04:30:05,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 04:30:05,220 INFO L138 BoogieDeclarations]: Found implementation of procedure bor [2020-10-13 04:30:05,220 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 04:30:05,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 04:30:05,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 04:30:05,221 INFO L130 BoogieDeclarations]: Found specification of procedure bor [2020-10-13 04:30:05,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 04:30:05,221 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 04:30:05,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 04:30:05,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 04:30:05,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 04:30:05,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 04:30:05,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 04:30:05,502 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 04:30:05,503 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 04:30:05,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:30:05 BoogieIcfgContainer [2020-10-13 04:30:05,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 04:30:05,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 04:30:05,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 04:30:05,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 04:30:05,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:30:04" (1/3) ... [2020-10-13 04:30:05,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8df4081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:30:05, skipping insertion in model container [2020-10-13 04:30:05,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:05" (2/3) ... [2020-10-13 04:30:05,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8df4081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:30:05, skipping insertion in model container [2020-10-13 04:30:05,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:30:05" (3/3) ... [2020-10-13 04:30:05,517 INFO L109 eAbstractionObserver]: Analyzing ICFG bor3.i [2020-10-13 04:30:05,531 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 04:30:05,543 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 04:30:05,575 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 04:30:05,603 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 04:30:05,603 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 04:30:05,603 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 04:30:05,604 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 04:30:05,604 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 04:30:05,604 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 04:30:05,604 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 04:30:05,604 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 04:30:05,623 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-13 04:30:05,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 04:30:05,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:05,630 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:05,631 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:05,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:05,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1283808693, now seen corresponding path program 1 times [2020-10-13 04:30:05,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:05,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926066909] [2020-10-13 04:30:05,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:05,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:05,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:05,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:06,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 04:30:06,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:06,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 815 [2020-10-13 04:30:06,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:06,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:06,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:30:06,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:06,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 04:30:06,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:06,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:06,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:06,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:06,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:06,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 04:30:06,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:06,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:06,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:06,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:06,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:06,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:30:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:06,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:06,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:06,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:06,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:30:06,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:06,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:06,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:06,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:06,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:06,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 04:30:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:06,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:06,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:06,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:06,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:30:06,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:06,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:06,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:06,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:06,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:06,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:30:06,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:06,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:06,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:06,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:06,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:30:06,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:06,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:06,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:30:06,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:06,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:06,729 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 04:30:06,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926066909] [2020-10-13 04:30:06,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:30:06,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 04:30:06,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144535721] [2020-10-13 04:30:06,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 04:30:06,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:06,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 04:30:06,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 04:30:06,778 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-13 04:30:06,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:06,914 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2020-10-13 04:30:06,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 04:30:06,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-13 04:30:06,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:06,930 INFO L225 Difference]: With dead ends: 54 [2020-10-13 04:30:06,930 INFO L226 Difference]: Without dead ends: 26 [2020-10-13 04:30:06,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 04:30:06,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-13 04:30:07,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-13 04:30:07,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-13 04:30:07,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-13 04:30:07,010 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2020-10-13 04:30:07,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:07,011 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-13 04:30:07,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 04:30:07,013 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-13 04:30:07,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 04:30:07,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:07,018 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:07,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 04:30:07,019 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:07,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:07,019 INFO L82 PathProgramCache]: Analyzing trace with hash 721846027, now seen corresponding path program 1 times [2020-10-13 04:30:07,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:07,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973454491] [2020-10-13 04:30:07,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:07,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:07,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:07,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:07,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:07,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:07,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:07,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 04:30:07,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:07,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 845 [2020-10-13 04:30:07,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:07,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:30:07,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 04:30:07,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:30:07,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:07,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:07,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:07,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:07,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:07,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:07,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:30:07,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:07,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:07,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:07,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:07,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:07,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:30:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:07,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:07,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:07,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:07,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:07,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 04:30:07,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:07,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:30:07,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:30:07,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:30:07,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:07,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 04:30:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:07,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:07,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:07,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:07,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:07,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:07,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:30:07,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:07,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:07,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:30:07,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:07,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:07,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:30:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:07,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:07,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:07,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:07,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:07,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:07,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 04:30:07,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:07,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:07,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:30:07,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:07,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:08,008 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 04:30:08,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973454491] [2020-10-13 04:30:08,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:08,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-13 04:30:08,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113447544] [2020-10-13 04:30:08,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 04:30:08,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:08,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 04:30:08,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:30:08,017 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-10-13 04:30:08,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:08,165 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-10-13 04:30:08,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 04:30:08,168 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-13 04:30:08,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:08,170 INFO L225 Difference]: With dead ends: 45 [2020-10-13 04:30:08,170 INFO L226 Difference]: Without dead ends: 28 [2020-10-13 04:30:08,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 04:30:08,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-13 04:30:08,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-13 04:30:08,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 04:30:08,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-13 04:30:08,194 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2020-10-13 04:30:08,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:08,195 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-13 04:30:08,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 04:30:08,195 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-13 04:30:08,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 04:30:08,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:08,197 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:08,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 04:30:08,198 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:08,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:08,198 INFO L82 PathProgramCache]: Analyzing trace with hash 540504713, now seen corresponding path program 1 times [2020-10-13 04:30:08,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:08,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235908702] [2020-10-13 04:30:08,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:08,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:08,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:08,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:08,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:08,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:10,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 04:30:10,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:10,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2153 [2020-10-13 04:30:10,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:10,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:30:10,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 04:30:10,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:30:10,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:10,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:10,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:10,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:10,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:10,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:30:10,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:10,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:10,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:10,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:10,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:10,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:30:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:10,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:10,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:10,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:10,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 04:30:10,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:10,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:10,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:10,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:10,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:10,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 04:30:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:10,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:10,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:10,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:10,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:30:10,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:10,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:10,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:10,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:10,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:10,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:30:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:10,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:10,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:10,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:10,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 04:30:10,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:10,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:10,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:10,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:10,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:10,484 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-13 04:30:10,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235908702] [2020-10-13 04:30:10,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:30:10,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 04:30:10,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366085055] [2020-10-13 04:30:10,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 04:30:10,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:10,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 04:30:10,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:30:10,487 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2020-10-13 04:30:10,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:10,582 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-10-13 04:30:10,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 04:30:10,583 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-13 04:30:10,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:10,585 INFO L225 Difference]: With dead ends: 42 [2020-10-13 04:30:10,585 INFO L226 Difference]: Without dead ends: 29 [2020-10-13 04:30:10,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:30:10,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-13 04:30:10,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-13 04:30:10,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-13 04:30:10,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-13 04:30:10,594 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 38 [2020-10-13 04:30:10,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:10,596 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-13 04:30:10,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 04:30:10,597 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-13 04:30:10,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 04:30:10,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:10,599 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:10,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 04:30:10,600 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:10,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:10,600 INFO L82 PathProgramCache]: Analyzing trace with hash -107343225, now seen corresponding path program 1 times [2020-10-13 04:30:10,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:10,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4386168] [2020-10-13 04:30:10,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:10,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:11,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:14,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 04:30:14,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:14,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3404 [2020-10-13 04:30:14,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:14,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:30:14,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:14,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:30:14,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:14,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:14,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:14,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:14,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:14,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:14,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:30:14,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:14,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:14,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:14,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:14,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 04:30:14,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:30:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:14,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:14,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:14,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:14,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 04:30:14,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:14,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:14,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:14,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:14,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:14,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 04:30:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:14,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:14,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:14,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:14,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 04:30:14,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:14,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:14,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:14,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:14,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:14,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:30:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:14,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:14,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:14,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:14,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 04:30:14,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:14,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:14,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:14,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:14,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:14,194 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-13 04:30:14,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4386168] [2020-10-13 04:30:14,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:30:14,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 04:30:14,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575038340] [2020-10-13 04:30:14,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 04:30:14,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:14,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 04:30:14,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:30:14,201 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-13 04:30:14,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:14,322 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-13 04:30:14,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 04:30:14,323 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-13 04:30:14,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:14,324 INFO L225 Difference]: With dead ends: 50 [2020-10-13 04:30:14,325 INFO L226 Difference]: Without dead ends: 30 [2020-10-13 04:30:14,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:30:14,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-13 04:30:14,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-13 04:30:14,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 04:30:14,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-13 04:30:14,343 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 40 [2020-10-13 04:30:14,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:14,343 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-13 04:30:14,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 04:30:14,344 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-13 04:30:14,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 04:30:14,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:14,347 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:14,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 04:30:14,348 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:14,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:14,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1550668567, now seen corresponding path program 1 times [2020-10-13 04:30:14,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:14,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607275486] [2020-10-13 04:30:14,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:14,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:18,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:18,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 04:30:18,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:18,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4500 [2020-10-13 04:30:18,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:18,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:30:18,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 04:30:18,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:30:18,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:18,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:18,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:18,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:18,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:18,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:18,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:30:18,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:18,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:18,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:18,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:18,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:18,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 04:30:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:18,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:18,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:18,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:18,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:18,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 04:30:18,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:18,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:30:18,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:30:18,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:30:18,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:18,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 04:30:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:18,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:18,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:18,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:18,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:18,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:18,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:30:18,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:18,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:18,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:18,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:18,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:18,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:30:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:18,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:18,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:18,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:18,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:18,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:18,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:30:18,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:18,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:18,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:18,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:18,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:18,960 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 04:30:18,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607275486] [2020-10-13 04:30:18,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:18,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 04:30:18,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293647274] [2020-10-13 04:30:18,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 04:30:18,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:18,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 04:30:18,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:30:18,963 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-13 04:30:19,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:19,067 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2020-10-13 04:30:19,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 04:30:19,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-10-13 04:30:19,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:19,069 INFO L225 Difference]: With dead ends: 51 [2020-10-13 04:30:19,069 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 04:30:19,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:30:19,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 04:30:19,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-13 04:30:19,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 04:30:19,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-13 04:30:19,076 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 42 [2020-10-13 04:30:19,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:19,077 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-13 04:30:19,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 04:30:19,077 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-13 04:30:19,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 04:30:19,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:19,078 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:19,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 04:30:19,079 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:19,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:19,079 INFO L82 PathProgramCache]: Analyzing trace with hash 428974311, now seen corresponding path program 2 times [2020-10-13 04:30:19,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:19,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913746026] [2020-10-13 04:30:19,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:19,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:19,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:19,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:19,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:19,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:24,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 04:30:24,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:24,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:30:24,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:24,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:30:24,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:24,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:30:24,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:24,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:24,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:24,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:24,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:24,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:30:24,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:24,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:24,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:24,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:24,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:24,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 04:30:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:24,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:24,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:24,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:24,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 04:30:24,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:24,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:24,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:24,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:24,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:24,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:30:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:24,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:24,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:24,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:24,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 04:30:24,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:24,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:24,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:24,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:24,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:24,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:30:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:24,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:24,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:24,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:24,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 04:30:24,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:24,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:24,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:24,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:24,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:24,216 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-13 04:30:24,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913746026] [2020-10-13 04:30:24,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:24,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 04:30:24,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183173950] [2020-10-13 04:30:24,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 04:30:24,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:24,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 04:30:24,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:30:24,220 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 5 states. [2020-10-13 04:30:24,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:24,319 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-10-13 04:30:24,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 04:30:24,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-10-13 04:30:24,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:24,320 INFO L225 Difference]: With dead ends: 56 [2020-10-13 04:30:24,320 INFO L226 Difference]: Without dead ends: 34 [2020-10-13 04:30:24,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:30:24,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-13 04:30:24,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-13 04:30:24,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 04:30:24,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-13 04:30:24,334 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 48 [2020-10-13 04:30:24,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:24,335 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-13 04:30:24,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 04:30:24,336 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-13 04:30:24,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 04:30:24,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:24,338 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:24,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 04:30:24,339 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:24,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:24,340 INFO L82 PathProgramCache]: Analyzing trace with hash 948091209, now seen corresponding path program 3 times [2020-10-13 04:30:24,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:24,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055270658] [2020-10-13 04:30:24,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:24,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:29,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 04:30:29,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:29,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 04:30:29,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:29,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:30:29,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 04:30:29,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:30:29,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:29,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:29,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:29,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:29,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:29,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:30:29,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:29,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:29,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:29,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:29,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:29,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 04:30:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:29,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:29,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:29,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:29,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:30:29,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:29,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:29,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:29,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:29,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:29,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 04:30:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:29,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:29,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:29,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:29,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:30:29,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:29,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:29,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:29,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:29,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:29,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 04:30:29,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:29,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:29,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:29,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:29,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:30:29,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:29,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:29,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:29,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:29,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:29,457 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-13 04:30:29,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055270658] [2020-10-13 04:30:29,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:29,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 04:30:29,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915966242] [2020-10-13 04:30:29,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 04:30:29,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:29,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 04:30:29,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:30:29,462 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-10-13 04:30:29,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:29,562 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-10-13 04:30:29,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 04:30:29,562 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-10-13 04:30:29,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:29,563 INFO L225 Difference]: With dead ends: 51 [2020-10-13 04:30:29,563 INFO L226 Difference]: Without dead ends: 36 [2020-10-13 04:30:29,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:30:29,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-13 04:30:29,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-13 04:30:29,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-13 04:30:29,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-13 04:30:29,571 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 50 [2020-10-13 04:30:29,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:29,571 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-13 04:30:29,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 04:30:29,571 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-13 04:30:29,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 04:30:29,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:29,572 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:29,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 04:30:29,573 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:29,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:29,573 INFO L82 PathProgramCache]: Analyzing trace with hash -629434041, now seen corresponding path program 4 times [2020-10-13 04:30:29,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:29,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943789574] [2020-10-13 04:30:29,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:29,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:30,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:34,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:34,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 04:30:34,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:34,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:30:34,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:34,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:30:34,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:34,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:30:34,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:34,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:34,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:34,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:34,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:34,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:34,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:30:34,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:34,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:34,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:34,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:34,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:34,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 04:30:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:34,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:34,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:34,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:34,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:34,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:34,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 04:30:34,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:34,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:34,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:34,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:34,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:34,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 04:30:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:34,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:34,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:34,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:34,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:34,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:34,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:30:34,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:34,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:34,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:34,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:34,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:34,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 04:30:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:34,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:34,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:34,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:34,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:34,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:34,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:30:34,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:34,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:34,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:34,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:34,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:34,690 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-13 04:30:34,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943789574] [2020-10-13 04:30:34,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:34,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 04:30:34,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744295418] [2020-10-13 04:30:34,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 04:30:34,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:34,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 04:30:34,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:30:34,693 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-10-13 04:30:34,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:34,785 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-10-13 04:30:34,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 04:30:34,786 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-13 04:30:34,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:34,787 INFO L225 Difference]: With dead ends: 62 [2020-10-13 04:30:34,787 INFO L226 Difference]: Without dead ends: 38 [2020-10-13 04:30:34,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:30:34,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-13 04:30:34,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-13 04:30:34,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-13 04:30:34,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-13 04:30:34,802 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 52 [2020-10-13 04:30:34,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:34,802 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-13 04:30:34,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 04:30:34,803 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-13 04:30:34,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 04:30:34,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:34,804 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:34,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 04:30:34,805 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:34,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:34,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1887809705, now seen corresponding path program 5 times [2020-10-13 04:30:34,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:34,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895887358] [2020-10-13 04:30:34,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:34,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:34,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:34,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:34,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:35,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:39,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:39,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 04:30:39,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:39,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 04:30:39,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:39,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:30:39,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:30:39,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:30:39,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:39,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:39,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:39,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:39,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:39,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:39,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:39,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:30:39,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:39,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:39,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:39,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:39,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:39,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 04:30:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:39,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:39,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:39,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:39,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:39,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:39,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:30:39,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:39,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:39,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:39,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:39,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:39,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 04:30:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:39,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:39,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:39,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:39,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:39,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 04:30:39,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:39,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:30:39,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:30:39,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:30:39,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:39,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 04:30:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:39,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:39,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:39,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:39,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:39,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:39,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:30:39,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:39,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:39,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:39,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:39,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:39,955 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 04:30:39,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895887358] [2020-10-13 04:30:39,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:39,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 04:30:39,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686784166] [2020-10-13 04:30:39,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 04:30:39,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:39,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 04:30:39,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:30:39,962 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-10-13 04:30:40,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:40,082 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2020-10-13 04:30:40,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 04:30:40,083 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-10-13 04:30:40,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:40,084 INFO L225 Difference]: With dead ends: 63 [2020-10-13 04:30:40,084 INFO L226 Difference]: Without dead ends: 40 [2020-10-13 04:30:40,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:30:40,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-13 04:30:40,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-13 04:30:40,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 04:30:40,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-13 04:30:40,094 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 54 [2020-10-13 04:30:40,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:40,094 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-13 04:30:40,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 04:30:40,095 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-13 04:30:40,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 04:30:40,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:40,098 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:40,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 04:30:40,099 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:40,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:40,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1137374119, now seen corresponding path program 6 times [2020-10-13 04:30:40,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:40,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144585225] [2020-10-13 04:30:40,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:40,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:43,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:45,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 04:30:45,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:45,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:30:45,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:45,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:30:45,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 04:30:45,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:30:45,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:45,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:45,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:45,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:45,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:45,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:30:45,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:45,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:45,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:45,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:45,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:45,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 04:30:45,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:45,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:45,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:45,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:45,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:30:45,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:45,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:45,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:45,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:45,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 04:30:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:45,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:45,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:45,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:45,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:30:45,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:45,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:45,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:45,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:45,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:45,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 04:30:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:45,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:45,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:45,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:45,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:30:45,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:45,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:45,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:30:45,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:45,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:45,215 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-13 04:30:45,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144585225] [2020-10-13 04:30:45,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:45,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 04:30:45,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438106156] [2020-10-13 04:30:45,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 04:30:45,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:45,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 04:30:45,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:30:45,218 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 6 states. [2020-10-13 04:30:45,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:45,306 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2020-10-13 04:30:45,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 04:30:45,307 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-10-13 04:30:45,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:45,308 INFO L225 Difference]: With dead ends: 59 [2020-10-13 04:30:45,308 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 04:30:45,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:30:45,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 04:30:45,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-13 04:30:45,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 04:30:45,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-13 04:30:45,314 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 60 [2020-10-13 04:30:45,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:45,314 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-13 04:30:45,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 04:30:45,314 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-13 04:30:45,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 04:30:45,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:45,316 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:45,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 04:30:45,316 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:45,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:45,316 INFO L82 PathProgramCache]: Analyzing trace with hash -2089835483, now seen corresponding path program 7 times [2020-10-13 04:30:45,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:45,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628584463] [2020-10-13 04:30:45,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:45,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:49,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:50,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 04:30:50,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:50,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 04:30:50,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:50,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:30:50,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:30:50,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:30:50,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:50,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:50,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:50,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:50,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:50,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:30:50,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:50,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:50,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:50,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:50,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:50,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 04:30:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:50,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:50,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:50,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:50,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:30:50,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:50,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:50,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:50,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:50,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:50,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 04:30:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:50,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:50,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:50,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:50,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:30:50,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:50,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:30:50,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:30:50,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:30:50,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:50,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 04:30:50,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:50,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:50,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:50,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:50,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:30:50,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:50,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:50,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:30:50,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:50,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:50,450 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 28 proven. 37 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-13 04:30:50,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628584463] [2020-10-13 04:30:50,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:50,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 04:30:50,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161482879] [2020-10-13 04:30:50,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 04:30:50,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:50,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 04:30:50,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:30:50,453 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2020-10-13 04:30:50,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:50,582 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2020-10-13 04:30:50,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 04:30:50,582 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-10-13 04:30:50,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:50,583 INFO L225 Difference]: With dead ends: 71 [2020-10-13 04:30:50,583 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 04:30:50,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:30:50,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 04:30:50,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-13 04:30:50,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 04:30:50,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-13 04:30:50,589 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 62 [2020-10-13 04:30:50,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:50,589 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-13 04:30:50,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 04:30:50,589 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-13 04:30:50,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 04:30:50,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:50,590 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:50,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 04:30:50,591 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:50,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:50,591 INFO L82 PathProgramCache]: Analyzing trace with hash 150681891, now seen corresponding path program 8 times [2020-10-13 04:30:50,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:50,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079759373] [2020-10-13 04:30:50,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:50,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:55,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:55,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 04:30:55,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:30:55,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:30:55,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:55,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:30:55,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:55,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:30:55,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:55,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:55,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:55,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:55,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:55,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:55,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:30:55,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:55,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:55,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:55,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:55,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:55,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 04:30:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:55,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:55,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:55,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:55,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:30:55,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:55,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:30:55,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:55,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:55,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:30:55,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:55,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:55,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 04:30:55,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:55,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:55,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:55,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:55,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:30:55,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:55,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:30:55,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:55,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:55,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:30:55,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:55,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:55,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 04:30:55,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:55,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:55,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:55,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:55,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:30:55,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:55,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 04:30:55,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:55,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:55,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:30:55,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:55,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:55,695 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-13 04:30:55,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079759373] [2020-10-13 04:30:55,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:55,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 04:30:55,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832456879] [2020-10-13 04:30:55,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 04:30:55,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:55,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 04:30:55,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:30:55,697 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 7 states. [2020-10-13 04:30:55,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:55,799 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2020-10-13 04:30:55,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 04:30:55,800 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-10-13 04:30:55,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:55,801 INFO L225 Difference]: With dead ends: 76 [2020-10-13 04:30:55,801 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 04:30:55,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:30:55,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 04:30:55,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-13 04:30:55,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 04:30:55,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-13 04:30:55,816 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 68 [2020-10-13 04:30:55,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:55,817 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-13 04:30:55,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 04:30:55,817 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-13 04:30:55,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 04:30:55,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:55,821 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:55,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 04:30:55,821 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:55,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:55,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1862159493, now seen corresponding path program 9 times [2020-10-13 04:30:55,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:55,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208647381] [2020-10-13 04:30:55,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:55,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:55,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:55,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:55,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:00,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:00,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 04:31:00,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:00,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 04:31:00,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:00,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:31:00,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 04:31:00,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:31:00,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:00,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:00,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:00,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:00,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:00,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:00,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:00,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:00,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:00,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:00,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:00,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:00,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:00,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 04:31:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:00,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:00,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:00,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:00,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:31:00,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:00,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:31:00,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:00,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:00,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:00,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:00,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:00,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:31:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:00,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:00,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:00,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:00,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:31:00,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:00,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:31:00,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:00,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:00,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:00,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:00,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:00,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 04:31:00,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:00,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:00,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:00,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:00,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:31:00,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:00,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:31:00,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:00,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:00,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:31:00,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:00,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:00,958 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-13 04:31:00,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208647381] [2020-10-13 04:31:00,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:00,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 04:31:00,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826666539] [2020-10-13 04:31:00,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 04:31:00,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:00,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 04:31:00,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:31:00,960 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 7 states. [2020-10-13 04:31:01,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:01,064 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2020-10-13 04:31:01,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 04:31:01,065 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-10-13 04:31:01,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:01,066 INFO L225 Difference]: With dead ends: 67 [2020-10-13 04:31:01,066 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 04:31:01,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:31:01,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 04:31:01,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-13 04:31:01,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 04:31:01,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-13 04:31:01,072 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 70 [2020-10-13 04:31:01,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:01,072 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-13 04:31:01,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 04:31:01,072 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-13 04:31:01,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 04:31:01,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:01,073 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:01,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 04:31:01,074 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:01,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:01,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1920651901, now seen corresponding path program 10 times [2020-10-13 04:31:01,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:01,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103962977] [2020-10-13 04:31:01,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:01,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:06,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 04:31:06,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:06,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:31:06,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:06,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:31:06,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 04:31:06,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:31:06,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:06,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:06,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:06,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:06,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:06,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:06,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:06,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:06,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:06,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:06,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:06,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:06,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 04:31:06,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:06,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:06,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:31:06,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:06,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:31:06,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:06,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:31:06,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:31:06,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:31:06,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:06,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:31:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:06,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:06,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:31:06,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:06,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:31:06,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:06,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:06,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:31:06,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:06,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:06,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 04:31:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:06,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:06,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:31:06,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:06,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:31:06,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:06,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:06,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:31:06,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:06,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:06,204 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-13 04:31:06,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103962977] [2020-10-13 04:31:06,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:06,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 04:31:06,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343226538] [2020-10-13 04:31:06,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 04:31:06,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:06,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 04:31:06,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:31:06,206 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 8 states. [2020-10-13 04:31:06,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:06,362 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2020-10-13 04:31:06,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 04:31:06,363 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 72 [2020-10-13 04:31:06,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:06,364 INFO L225 Difference]: With dead ends: 81 [2020-10-13 04:31:06,364 INFO L226 Difference]: Without dead ends: 50 [2020-10-13 04:31:06,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:31:06,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-13 04:31:06,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-13 04:31:06,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-13 04:31:06,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-13 04:31:06,371 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 72 [2020-10-13 04:31:06,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:06,372 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-13 04:31:06,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 04:31:06,372 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-13 04:31:06,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 04:31:06,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:06,373 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:06,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 04:31:06,373 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:06,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:06,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1621058305, now seen corresponding path program 11 times [2020-10-13 04:31:06,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:06,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902375753] [2020-10-13 04:31:06,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:06,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:11,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:11,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 04:31:11,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:11,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:31:11,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:11,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:31:11,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:31:11,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:31:11,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:11,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:11,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:11,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:11,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:11,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:11,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:31:11,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:11,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:11,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:11,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:11,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:11,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 04:31:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:11,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:11,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:11,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:11,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:11,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:11,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:31:11,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:11,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:11,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:11,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:11,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:11,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 04:31:11,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:11,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:11,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:11,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:11,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:11,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:11,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:31:11,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:11,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:11,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:11,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:11,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:11,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 04:31:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:11,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:11,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:11,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:11,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:11,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:11,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 04:31:11,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:11,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:11,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:11,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:11,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:11,499 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2020-10-13 04:31:11,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902375753] [2020-10-13 04:31:11,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:11,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 04:31:11,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859682246] [2020-10-13 04:31:11,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 04:31:11,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:11,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 04:31:11,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:31:11,502 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 8 states. [2020-10-13 04:31:11,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:11,610 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2020-10-13 04:31:11,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 04:31:11,610 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-10-13 04:31:11,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:11,611 INFO L225 Difference]: With dead ends: 86 [2020-10-13 04:31:11,611 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 04:31:11,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:31:11,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 04:31:11,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-13 04:31:11,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-13 04:31:11,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-13 04:31:11,620 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 78 [2020-10-13 04:31:11,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:11,620 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-13 04:31:11,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 04:31:11,620 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-13 04:31:11,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 04:31:11,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:11,621 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:11,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 04:31:11,622 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:11,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:11,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1471357923, now seen corresponding path program 12 times [2020-10-13 04:31:11,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:11,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770759162] [2020-10-13 04:31:11,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:11,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:11,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:11,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:11,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:16,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:16,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 04:31:16,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:16,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 04:31:16,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:16,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:31:16,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-13 04:31:16,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:31:16,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:16,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:16,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:16,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:16,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:16,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:16,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:16,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:16,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:16,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:16,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:16,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:16,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 04:31:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:16,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:16,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:16,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:16,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:16,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:16,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 04:31:16,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:16,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:16,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:16,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:16,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:16,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 04:31:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:16,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:16,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:16,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:16,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:16,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:16,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 04:31:16,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:16,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:16,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:16,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:16,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:31:16,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 04:31:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:16,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:16,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:16,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:16,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:16,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:16,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 04:31:16,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:16,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:16,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:16,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:16,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:31:16,797 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-13 04:31:16,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770759162] [2020-10-13 04:31:16,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:16,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 04:31:16,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346941348] [2020-10-13 04:31:16,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 04:31:16,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:16,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 04:31:16,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:31:16,804 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 8 states. [2020-10-13 04:31:16,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:16,943 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2020-10-13 04:31:16,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 04:31:16,944 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-10-13 04:31:16,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:16,945 INFO L225 Difference]: With dead ends: 75 [2020-10-13 04:31:16,946 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 04:31:16,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:31:16,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 04:31:16,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-13 04:31:16,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 04:31:16,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-13 04:31:16,965 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 80 [2020-10-13 04:31:16,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:16,966 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-13 04:31:16,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 04:31:16,966 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-13 04:31:16,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 04:31:16,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:16,968 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:16,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 04:31:16,971 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:16,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:16,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1187343007, now seen corresponding path program 13 times [2020-10-13 04:31:16,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:16,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994310512] [2020-10-13 04:31:16,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:16,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:21,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:21,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 04:31:21,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:21,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:31:21,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:21,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:31:21,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:31:21,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:31:21,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:22,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:22,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:22,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:22,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:22,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:22,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:22,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:22,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:22,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:22,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:22,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 04:31:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:22,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:22,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:22,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:22,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 04:31:22,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:22,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:22,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:22,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:22,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:31:22,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 04:31:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:22,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:22,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:22,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:22,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 04:31:22,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:22,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:22,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:22,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:22,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:31:22,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 04:31:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:22,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:22,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:22,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:22,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 04:31:22,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:22,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:22,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:22,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:22,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:31:22,196 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-13 04:31:22,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994310512] [2020-10-13 04:31:22,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:22,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 04:31:22,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230929491] [2020-10-13 04:31:22,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 04:31:22,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:22,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 04:31:22,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:31:22,200 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 9 states. [2020-10-13 04:31:22,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:22,340 INFO L93 Difference]: Finished difference Result 92 states and 100 transitions. [2020-10-13 04:31:22,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 04:31:22,341 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-10-13 04:31:22,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:22,342 INFO L225 Difference]: With dead ends: 92 [2020-10-13 04:31:22,342 INFO L226 Difference]: Without dead ends: 56 [2020-10-13 04:31:22,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:31:22,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-13 04:31:22,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-13 04:31:22,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 04:31:22,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-13 04:31:22,358 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 82 [2020-10-13 04:31:22,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:22,359 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-13 04:31:22,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 04:31:22,359 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-13 04:31:22,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 04:31:22,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:22,360 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 6, 6, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:22,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 04:31:22,360 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:22,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:22,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1931537085, now seen corresponding path program 14 times [2020-10-13 04:31:22,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:22,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446090921] [2020-10-13 04:31:22,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:22,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:27,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:27,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 04:31:27,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:27,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:31:27,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:27,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:31:27,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 04:31:27,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:31:27,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:27,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:27,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:27,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:27,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:27,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:27,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:27,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:27,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:27,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:27,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:27,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:27,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 04:31:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:27,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:27,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:27,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:27,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:27,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:27,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:31:27,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:27,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:27,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:27,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:27,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:27,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 04:31:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:27,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:27,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:27,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:27,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:27,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:31:27,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:27,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:31:27,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:31:27,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:31:27,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:27,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 04:31:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:27,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:27,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:27,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:27,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:27,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:27,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:31:27,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:27,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:27,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:27,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:27,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:31:27,527 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 64 proven. 89 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-10-13 04:31:27,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446090921] [2020-10-13 04:31:27,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:27,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 04:31:27,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098597725] [2020-10-13 04:31:27,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 04:31:27,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:27,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 04:31:27,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:31:27,536 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 9 states. [2020-10-13 04:31:27,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:27,735 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2020-10-13 04:31:27,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 04:31:27,736 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-10-13 04:31:27,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:27,737 INFO L225 Difference]: With dead ends: 93 [2020-10-13 04:31:27,737 INFO L226 Difference]: Without dead ends: 58 [2020-10-13 04:31:27,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:31:27,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-13 04:31:27,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-13 04:31:27,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-13 04:31:27,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-13 04:31:27,746 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 84 [2020-10-13 04:31:27,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:27,746 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-13 04:31:27,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 04:31:27,747 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-13 04:31:27,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 04:31:27,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:27,748 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:27,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 04:31:27,748 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:27,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:27,749 INFO L82 PathProgramCache]: Analyzing trace with hash -51914303, now seen corresponding path program 15 times [2020-10-13 04:31:27,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:27,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107480131] [2020-10-13 04:31:27,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:27,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:27,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:27,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:27,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:32,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:32,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 04:31:32,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:32,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 04:31:32,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:32,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:31:32,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-13 04:31:32,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:31:32,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:32,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:32,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:32,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:32,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:32,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:32,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:32,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:32,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:32,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:32,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:32,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:32,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 04:31:32,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:32,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:32,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:32,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:32,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:32,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:32,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 04:31:32,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:32,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:32,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:32,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:32,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:32,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 04:31:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:32,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:32,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:32,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:32,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:32,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:32,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:31:32,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:32,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:32,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:32,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:32,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:32,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 04:31:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:32,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:32,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:32,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:32,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:32,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:32,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:31:32,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:32,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:32,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:31:32,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:32,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:32,891 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2020-10-13 04:31:32,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107480131] [2020-10-13 04:31:32,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:32,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 04:31:32,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067387227] [2020-10-13 04:31:32,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 04:31:32,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:32,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 04:31:32,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:31:32,893 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 9 states. [2020-10-13 04:31:32,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:32,997 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2020-10-13 04:31:32,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 04:31:32,998 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-10-13 04:31:32,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:32,998 INFO L225 Difference]: With dead ends: 83 [2020-10-13 04:31:32,998 INFO L226 Difference]: Without dead ends: 60 [2020-10-13 04:31:32,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:31:32,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-13 04:31:33,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-13 04:31:33,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 04:31:33,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-13 04:31:33,004 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 90 [2020-10-13 04:31:33,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:33,004 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-13 04:31:33,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 04:31:33,004 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-13 04:31:33,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 04:31:33,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:33,005 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:33,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 04:31:33,006 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:33,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:33,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1367983169, now seen corresponding path program 16 times [2020-10-13 04:31:33,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:33,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864359177] [2020-10-13 04:31:33,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:33,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:38,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 04:31:38,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:38,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:31:38,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:38,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:31:38,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-13 04:31:38,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:31:38,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:38,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:38,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:38,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:38,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:38,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:38,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:38,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:38,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:38,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:38,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:38,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:38,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 04:31:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:38,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:38,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:38,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:38,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 04:31:38,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:38,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:38,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:38,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:38,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:38,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 04:31:38,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:38,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:38,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:38,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:38,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:31:38,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:38,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:38,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:38,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:38,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:38,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 04:31:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:38,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:38,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:38,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:38,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:31:38,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:38,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:38,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:31:38,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:38,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:38,166 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2020-10-13 04:31:38,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864359177] [2020-10-13 04:31:38,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:38,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 04:31:38,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319863144] [2020-10-13 04:31:38,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 04:31:38,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:38,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 04:31:38,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:31:38,168 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 10 states. [2020-10-13 04:31:38,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:38,298 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2020-10-13 04:31:38,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 04:31:38,299 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-10-13 04:31:38,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:38,300 INFO L225 Difference]: With dead ends: 85 [2020-10-13 04:31:38,300 INFO L226 Difference]: Without dead ends: 62 [2020-10-13 04:31:38,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:31:38,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-13 04:31:38,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-13 04:31:38,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-13 04:31:38,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-13 04:31:38,310 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 92 [2020-10-13 04:31:38,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:38,310 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-13 04:31:38,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 04:31:38,311 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-13 04:31:38,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 04:31:38,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:38,312 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 7, 7, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:38,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 04:31:38,313 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:38,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:38,313 INFO L82 PathProgramCache]: Analyzing trace with hash 905188925, now seen corresponding path program 17 times [2020-10-13 04:31:38,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:38,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455837368] [2020-10-13 04:31:38,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:38,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:43,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:43,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 04:31:43,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:43,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:31:43,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:43,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:31:43,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 04:31:43,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:31:43,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:43,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:43,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:43,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:43,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:43,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:43,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:43,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:43,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:43,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:43,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:43,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:43,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 04:31:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:43,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:43,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:43,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:43,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:43,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:43,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 04:31:43,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:43,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:43,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:43,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:43,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:43,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 04:31:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:43,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:43,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:43,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:43,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:43,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:31:43,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:43,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:31:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:31:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:31:43,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:43,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 04:31:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:43,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:43,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:43,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:43,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:43,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:43,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:31:43,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:43,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:43,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:31:43,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:43,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:43,484 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 88 proven. 124 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2020-10-13 04:31:43,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455837368] [2020-10-13 04:31:43,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:43,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 04:31:43,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917300266] [2020-10-13 04:31:43,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 04:31:43,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:43,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 04:31:43,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:31:43,486 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 10 states. [2020-10-13 04:31:43,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:43,685 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2020-10-13 04:31:43,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 04:31:43,686 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-13 04:31:43,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:43,687 INFO L225 Difference]: With dead ends: 105 [2020-10-13 04:31:43,687 INFO L226 Difference]: Without dead ends: 64 [2020-10-13 04:31:43,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:31:43,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-13 04:31:43,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-13 04:31:43,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-13 04:31:43,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-13 04:31:43,693 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 94 [2020-10-13 04:31:43,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:43,693 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-13 04:31:43,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 04:31:43,693 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-13 04:31:43,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 04:31:43,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:43,694 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:43,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 04:31:43,695 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:43,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:43,695 INFO L82 PathProgramCache]: Analyzing trace with hash -923175621, now seen corresponding path program 18 times [2020-10-13 04:31:43,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:43,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081662748] [2020-10-13 04:31:43,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:43,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:43,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:43,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:43,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:48,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:48,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 04:31:48,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:48,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:31:48,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:48,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:31:48,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:31:48,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:31:48,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:48,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:48,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:48,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:48,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:48,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:48,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:48,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:48,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:48,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:48,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:48,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:48,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 04:31:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:48,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:48,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:48,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:48,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:31:48,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:48,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:31:48,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:48,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:48,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:31:48,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:48,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:48,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 04:31:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:48,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:48,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:48,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:48,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:31:48,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:48,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 04:31:48,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:48,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:48,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:31:48,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:48,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:48,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 04:31:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:48,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:48,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:48,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:48,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:31:48,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:48,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:31:48,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:48,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:48,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:31:48,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:48,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:48,863 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2020-10-13 04:31:48,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081662748] [2020-10-13 04:31:48,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:48,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 04:31:48,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078379537] [2020-10-13 04:31:48,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 04:31:48,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:48,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 04:31:48,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:31:48,865 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 10 states. [2020-10-13 04:31:48,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:48,974 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2020-10-13 04:31:48,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 04:31:48,977 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 100 [2020-10-13 04:31:48,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:48,977 INFO L225 Difference]: With dead ends: 110 [2020-10-13 04:31:48,977 INFO L226 Difference]: Without dead ends: 66 [2020-10-13 04:31:48,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:31:48,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-13 04:31:48,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-13 04:31:48,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-13 04:31:48,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-13 04:31:48,984 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 100 [2020-10-13 04:31:48,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:48,984 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-13 04:31:48,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 04:31:48,985 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-13 04:31:48,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 04:31:48,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:48,986 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:48,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 04:31:48,986 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:48,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:48,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1836679011, now seen corresponding path program 19 times [2020-10-13 04:31:48,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:48,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889160075] [2020-10-13 04:31:48,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:48,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:49,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:49,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:49,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:53,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:53,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 04:31:53,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:54,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 04:31:54,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:54,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:31:54,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-13 04:31:54,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:31:54,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:54,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:54,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:54,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:54,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:54,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:54,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:54,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:54,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:54,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:54,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:54,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 04:31:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:54,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:54,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:31:54,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:54,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:31:54,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:54,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:54,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:54,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:54,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:54,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 04:31:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:54,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:54,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:31:54,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:54,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:31:54,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:54,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:54,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:54,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:54,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:54,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 04:31:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:54,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:54,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:31:54,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:54,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 04:31:54,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:54,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:54,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:31:54,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:54,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:54,146 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2020-10-13 04:31:54,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889160075] [2020-10-13 04:31:54,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:54,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 04:31:54,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169026044] [2020-10-13 04:31:54,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 04:31:54,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:54,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 04:31:54,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:31:54,148 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 11 states. [2020-10-13 04:31:54,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:54,269 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2020-10-13 04:31:54,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 04:31:54,269 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2020-10-13 04:31:54,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:54,271 INFO L225 Difference]: With dead ends: 93 [2020-10-13 04:31:54,271 INFO L226 Difference]: Without dead ends: 68 [2020-10-13 04:31:54,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:31:54,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-13 04:31:54,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-13 04:31:54,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-13 04:31:54,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-13 04:31:54,277 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 102 [2020-10-13 04:31:54,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:54,277 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-13 04:31:54,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 04:31:54,278 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-13 04:31:54,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 04:31:54,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:54,279 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 8, 8, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:54,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 04:31:54,279 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:54,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:54,279 INFO L82 PathProgramCache]: Analyzing trace with hash -35157093, now seen corresponding path program 20 times [2020-10-13 04:31:54,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:54,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101644709] [2020-10-13 04:31:54,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:54,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:59,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:59,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 04:31:59,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:59,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 04:31:59,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:59,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:31:59,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 04:31:59,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:31:59,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:59,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:59,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:59,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:59,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:59,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:59,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:59,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:59,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:59,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:59,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:59,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:59,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 04:31:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:59,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:59,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:59,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:59,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:31:59,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:59,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:31:59,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:59,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:59,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:59,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:59,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:59,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 04:31:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:59,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:59,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:59,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:31:59,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:59,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:31:59,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:59,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:31:59,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:31:59,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:31:59,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:59,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 04:31:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:59,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:59,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:59,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:59,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:31:59,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:59,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:31:59,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:59,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:59,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:31:59,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:59,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:59,451 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 116 proven. 165 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2020-10-13 04:31:59,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101644709] [2020-10-13 04:31:59,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:59,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 04:31:59,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165776681] [2020-10-13 04:31:59,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 04:31:59,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:59,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 04:31:59,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:31:59,453 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 11 states. [2020-10-13 04:31:59,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:59,679 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2020-10-13 04:31:59,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 04:31:59,680 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-13 04:31:59,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:59,681 INFO L225 Difference]: With dead ends: 115 [2020-10-13 04:31:59,681 INFO L226 Difference]: Without dead ends: 70 [2020-10-13 04:31:59,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-13 04:31:59,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-13 04:31:59,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-13 04:31:59,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-13 04:31:59,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-13 04:31:59,686 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 104 [2020-10-13 04:31:59,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:59,687 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-13 04:31:59,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 04:31:59,687 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-13 04:31:59,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 04:31:59,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:59,688 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:59,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 04:31:59,689 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:59,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:59,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1301941017, now seen corresponding path program 21 times [2020-10-13 04:31:59,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:59,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238511520] [2020-10-13 04:31:59,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:59,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:59,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:59,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:59,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:04,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:04,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 04:32:04,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:04,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 04:32:04,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:04,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:32:04,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:32:04,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:32:04,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:04,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:04,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:04,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:04,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:04,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:04,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:04,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:04,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:04,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:04,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:04,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:04,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:04,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 04:32:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:04,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:04,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:04,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:04,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:04,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:04,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 04:32:04,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:04,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:04,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:04,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:04,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:04,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 04:32:04,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:04,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:04,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:04,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:04,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:04,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:04,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 04:32:04,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:04,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:04,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:04,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:04,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:04,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 04:32:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:04,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:04,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:04,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:04,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:04,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:04,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 04:32:04,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:04,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:04,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:04,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:04,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:04,898 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-13 04:32:04,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238511520] [2020-10-13 04:32:04,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:04,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 04:32:04,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910605760] [2020-10-13 04:32:04,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 04:32:04,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:04,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 04:32:04,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:32:04,899 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 11 states. [2020-10-13 04:32:05,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:05,001 INFO L93 Difference]: Finished difference Result 120 states and 128 transitions. [2020-10-13 04:32:05,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 04:32:05,002 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 110 [2020-10-13 04:32:05,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:05,002 INFO L225 Difference]: With dead ends: 120 [2020-10-13 04:32:05,002 INFO L226 Difference]: Without dead ends: 72 [2020-10-13 04:32:05,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:32:05,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-13 04:32:05,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-13 04:32:05,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-13 04:32:05,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-13 04:32:05,009 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 110 [2020-10-13 04:32:05,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:05,009 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-13 04:32:05,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 04:32:05,009 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-13 04:32:05,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 04:32:05,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:05,010 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:05,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 04:32:05,011 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:05,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:05,011 INFO L82 PathProgramCache]: Analyzing trace with hash 505529339, now seen corresponding path program 22 times [2020-10-13 04:32:05,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:05,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110269509] [2020-10-13 04:32:05,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:05,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:05,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:05,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:05,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:10,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 04:32:10,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:10,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 04:32:10,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:10,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:32:10,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 04:32:10,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:32:10,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:10,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:10,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:10,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:10,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:10,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:10,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:10,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:10,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:10,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:32:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:10,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:10,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:10,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:10,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 04:32:10,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:10,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:10,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:10,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:10,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:10,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 04:32:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:10,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:10,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:10,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:10,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 04:32:10,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:10,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:10,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:10,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:10,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:10,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 04:32:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:10,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:10,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:10,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:10,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 04:32:10,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:10,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:10,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:10,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:10,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:10,204 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-13 04:32:10,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110269509] [2020-10-13 04:32:10,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:10,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 04:32:10,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473758193] [2020-10-13 04:32:10,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 04:32:10,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:10,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 04:32:10,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:32:10,206 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 12 states. [2020-10-13 04:32:10,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:10,327 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2020-10-13 04:32:10,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 04:32:10,327 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-10-13 04:32:10,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:10,329 INFO L225 Difference]: With dead ends: 101 [2020-10-13 04:32:10,329 INFO L226 Difference]: Without dead ends: 74 [2020-10-13 04:32:10,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:32:10,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-13 04:32:10,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-13 04:32:10,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 04:32:10,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-13 04:32:10,334 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 112 [2020-10-13 04:32:10,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:10,335 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-13 04:32:10,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 04:32:10,335 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-13 04:32:10,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 04:32:10,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:10,336 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 9, 9, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:10,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 04:32:10,336 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:10,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:10,337 INFO L82 PathProgramCache]: Analyzing trace with hash -2111545479, now seen corresponding path program 23 times [2020-10-13 04:32:10,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:10,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039458566] [2020-10-13 04:32:10,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:10,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:15,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:15,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 04:32:15,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:15,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 04:32:15,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:15,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:32:15,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:32:15,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:32:15,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:15,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:15,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:15,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:15,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:15,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:15,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:15,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:15,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:15,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:15,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:15,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:15,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:15,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:32:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:15,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:15,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:15,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:15,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:15,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:15,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 04:32:15,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:15,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:15,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:15,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:15,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:15,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 04:32:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:15,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:15,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:15,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:15,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:15,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:15,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 04:32:15,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:15,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:15,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:15,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:15,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:15,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 04:32:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:15,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:15,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:15,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:15,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:15,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:15,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 04:32:15,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:15,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:15,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:15,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:15,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:15,549 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2020-10-13 04:32:15,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039458566] [2020-10-13 04:32:15,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:15,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 04:32:15,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813725830] [2020-10-13 04:32:15,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 04:32:15,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:15,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 04:32:15,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:32:15,550 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 12 states. [2020-10-13 04:32:15,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:15,686 INFO L93 Difference]: Finished difference Result 126 states and 134 transitions. [2020-10-13 04:32:15,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 04:32:15,686 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 114 [2020-10-13 04:32:15,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:15,687 INFO L225 Difference]: With dead ends: 126 [2020-10-13 04:32:15,688 INFO L226 Difference]: Without dead ends: 76 [2020-10-13 04:32:15,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:32:15,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-13 04:32:15,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-13 04:32:15,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 04:32:15,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-13 04:32:15,694 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 114 [2020-10-13 04:32:15,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:15,695 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-13 04:32:15,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 04:32:15,695 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-13 04:32:15,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 04:32:15,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:15,696 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 9, 9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:15,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 04:32:15,696 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:15,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:15,697 INFO L82 PathProgramCache]: Analyzing trace with hash -461318309, now seen corresponding path program 24 times [2020-10-13 04:32:15,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:15,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74710476] [2020-10-13 04:32:15,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:15,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:15,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:15,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:15,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:20,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:20,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 04:32:20,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:20,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 04:32:20,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:20,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:32:20,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-13 04:32:20,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:32:20,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:20,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:20,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:20,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:20,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:20,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:20,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:20,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:20,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:20,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:20,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:20,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:20,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:32:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:20,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:20,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:20,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:20,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:20,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:20,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 04:32:20,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:20,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:20,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:20,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:20,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:20,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 04:32:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:20,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:20,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:20,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:20,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:20,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 04:32:20,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:20,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:32:20,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:32:20,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:32:20,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:20,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 04:32:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:20,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:20,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:20,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:20,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:20,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:20,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 04:32:20,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:20,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:20,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:20,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:20,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:20,893 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 148 proven. 212 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2020-10-13 04:32:20,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74710476] [2020-10-13 04:32:20,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:20,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 04:32:20,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760204022] [2020-10-13 04:32:20,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 04:32:20,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:20,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 04:32:20,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:32:20,895 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 12 states. [2020-10-13 04:32:21,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:21,143 INFO L93 Difference]: Finished difference Result 127 states and 137 transitions. [2020-10-13 04:32:21,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 04:32:21,144 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 116 [2020-10-13 04:32:21,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:21,145 INFO L225 Difference]: With dead ends: 127 [2020-10-13 04:32:21,145 INFO L226 Difference]: Without dead ends: 78 [2020-10-13 04:32:21,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-13 04:32:21,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-13 04:32:21,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-13 04:32:21,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 04:32:21,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-13 04:32:21,150 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 116 [2020-10-13 04:32:21,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:21,151 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-13 04:32:21,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 04:32:21,151 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-13 04:32:21,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 04:32:21,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:21,152 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 9, 9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:21,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 04:32:21,152 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:21,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:21,153 INFO L82 PathProgramCache]: Analyzing trace with hash 862348761, now seen corresponding path program 25 times [2020-10-13 04:32:21,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:21,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559350159] [2020-10-13 04:32:21,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:21,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:21,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:21,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:21,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:26,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:26,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 04:32:26,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:26,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:32:26,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:26,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:32:26,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-13 04:32:26,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:32:26,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:26,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:26,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:26,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:26,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:26,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:26,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:26,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:26,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:26,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:26,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:26,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:26,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:32:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:26,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:26,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:26,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:26,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:32:26,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:26,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 04:32:26,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:26,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:26,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:26,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:26,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:26,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 04:32:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:26,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:26,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:26,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:32:26,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:26,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 04:32:26,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:26,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:32:26,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:32:26,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:32:26,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:26,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 04:32:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:26,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:26,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:26,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:26,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:32:26,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:26,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 04:32:26,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:26,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:26,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:32:26,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:26,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:26,386 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 184 proven. 265 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2020-10-13 04:32:26,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559350159] [2020-10-13 04:32:26,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:26,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 04:32:26,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874555490] [2020-10-13 04:32:26,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 04:32:26,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:26,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 04:32:26,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:32:26,388 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 13 states. [2020-10-13 04:32:26,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:26,652 INFO L93 Difference]: Finished difference Result 131 states and 141 transitions. [2020-10-13 04:32:26,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 04:32:26,652 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 122 [2020-10-13 04:32:26,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:26,653 INFO L225 Difference]: With dead ends: 131 [2020-10-13 04:32:26,653 INFO L226 Difference]: Without dead ends: 80 [2020-10-13 04:32:26,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-13 04:32:26,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-13 04:32:26,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-13 04:32:26,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 04:32:26,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-13 04:32:26,660 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 122 [2020-10-13 04:32:26,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:26,660 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-13 04:32:26,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 04:32:26,660 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-13 04:32:26,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 04:32:26,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:26,661 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 9, 9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:26,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 04:32:26,662 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:26,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:26,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1738744361, now seen corresponding path program 26 times [2020-10-13 04:32:26,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:26,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169922452] [2020-10-13 04:32:26,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:26,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:26,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:26,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:26,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:31,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:31,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 04:32:31,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:31,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 04:32:31,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:31,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:32:31,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 04:32:31,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:32:31,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:31,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:31,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:31,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:31,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:31,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:31,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:31,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:31,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:31,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:31,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:31,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:31,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:32:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:31,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:31,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:31,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:31,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:31,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:31,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 04:32:31,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:31,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:31,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:31,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:31,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:31,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 04:32:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:31,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:31,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:31,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:31,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:31,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:31,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 04:32:31,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:31,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:31,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:31,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:31,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:31,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 04:32:31,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:31,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:31,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:31,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:31,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:31,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:31,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 04:32:31,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:31,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:31,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:32:31,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:31,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:31,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1056 trivial. 0 not checked. [2020-10-13 04:32:31,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169922452] [2020-10-13 04:32:31,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:31,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 04:32:31,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380149586] [2020-10-13 04:32:31,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 04:32:31,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:31,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 04:32:31,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:32:31,917 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 13 states. [2020-10-13 04:32:32,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:32,030 INFO L93 Difference]: Finished difference Result 113 states and 118 transitions. [2020-10-13 04:32:32,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 04:32:32,030 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 128 [2020-10-13 04:32:32,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:32,032 INFO L225 Difference]: With dead ends: 113 [2020-10-13 04:32:32,032 INFO L226 Difference]: Without dead ends: 82 [2020-10-13 04:32:32,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:32:32,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-13 04:32:32,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-13 04:32:32,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 04:32:32,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-13 04:32:32,038 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 128 [2020-10-13 04:32:32,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:32,038 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-13 04:32:32,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 04:32:32,038 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-13 04:32:32,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 04:32:32,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:32,039 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:32,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 04:32:32,040 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:32,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:32,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1655287211, now seen corresponding path program 27 times [2020-10-13 04:32:32,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:32,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951542549] [2020-10-13 04:32:32,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:32,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:32,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:32,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:32,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:37,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:37,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 04:32:37,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:37,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:32:37,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:37,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:32:37,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:32:37,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:32:37,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:37,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:37,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:37,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:37,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:37,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:37,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:37,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:37,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:37,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:37,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:37,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:37,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:37,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:32:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:37,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:37,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:37,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:37,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:37,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:37,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 04:32:37,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:37,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:37,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:32:37,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:37,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:37,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 04:32:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:37,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:37,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:37,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:37,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:37,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:37,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 04:32:37,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:37,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:37,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:32:37,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:37,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:37,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 04:32:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:37,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:37,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:37,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:37,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:37,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:37,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 04:32:37,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:37,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:37,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:32:37,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:37,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:37,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-13 04:32:37,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951542549] [2020-10-13 04:32:37,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:37,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 04:32:37,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195229920] [2020-10-13 04:32:37,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 04:32:37,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:37,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 04:32:37,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:32:37,340 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 13 states. [2020-10-13 04:32:37,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:37,476 INFO L93 Difference]: Finished difference Result 140 states and 148 transitions. [2020-10-13 04:32:37,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 04:32:37,477 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-10-13 04:32:37,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:37,478 INFO L225 Difference]: With dead ends: 140 [2020-10-13 04:32:37,478 INFO L226 Difference]: Without dead ends: 84 [2020-10-13 04:32:37,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:32:37,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-13 04:32:37,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-13 04:32:37,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-13 04:32:37,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-13 04:32:37,484 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 130 [2020-10-13 04:32:37,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:37,484 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-13 04:32:37,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 04:32:37,485 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-13 04:32:37,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 04:32:37,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:37,486 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:37,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 04:32:37,486 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:37,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:37,486 INFO L82 PathProgramCache]: Analyzing trace with hash -203766217, now seen corresponding path program 28 times [2020-10-13 04:32:37,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:37,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814610504] [2020-10-13 04:32:37,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:37,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:37,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:37,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:37,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:42,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:42,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 04:32:42,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:42,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 04:32:42,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:42,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:32:42,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:32:42,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:32:42,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:42,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:42,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:42,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:42,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:42,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:42,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:42,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:42,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:42,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:42,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:42,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:42,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:32:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:42,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:42,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:42,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:42,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:42,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:42,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 04:32:42,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:42,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:42,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:32:42,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:42,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:42,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 04:32:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:42,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:42,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:42,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:42,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:42,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:42,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 04:32:42,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:42,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:42,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:32:42,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:42,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:42,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 04:32:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:42,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:42,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:42,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:42,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:42,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:42,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 04:32:42,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:42,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:42,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:32:42,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:42,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-13 04:32:42,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814610504] [2020-10-13 04:32:42,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:42,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 04:32:42,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785465223] [2020-10-13 04:32:42,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 04:32:42,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:42,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 04:32:42,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:32:42,733 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 14 states. [2020-10-13 04:32:42,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:42,846 INFO L93 Difference]: Finished difference Result 142 states and 150 transitions. [2020-10-13 04:32:42,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 04:32:42,846 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 132 [2020-10-13 04:32:42,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:42,847 INFO L225 Difference]: With dead ends: 142 [2020-10-13 04:32:42,847 INFO L226 Difference]: Without dead ends: 86 [2020-10-13 04:32:42,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:32:42,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-13 04:32:42,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-13 04:32:42,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-13 04:32:42,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-13 04:32:42,853 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 132 [2020-10-13 04:32:42,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:42,854 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-13 04:32:42,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 04:32:42,854 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-13 04:32:42,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 04:32:42,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:42,855 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 11, 11, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:42,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 04:32:42,855 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:42,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:42,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1156462183, now seen corresponding path program 29 times [2020-10-13 04:32:42,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:42,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249145828] [2020-10-13 04:32:42,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:42,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:42,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:42,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:43,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:47,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:47,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 04:32:47,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:47,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 04:32:47,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:47,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:32:47,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-13 04:32:47,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:32:47,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:47,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:47,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:47,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:47,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:47,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:47,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:47,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:47,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:47,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:47,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:47,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:47,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:32:47,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:47,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:47,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:47,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:47,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:47,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:47,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 04:32:47,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:47,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:47,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:47,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:47,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:47,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 04:32:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:47,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:47,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:47,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:47,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:47,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 04:32:47,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:47,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:32:47,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:32:47,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:32:47,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:48,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 04:32:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:48,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:48,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:48,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:48,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:48,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:48,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 04:32:48,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:48,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:48,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:32:48,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:48,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:48,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1196 backedges. 224 proven. 324 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2020-10-13 04:32:48,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249145828] [2020-10-13 04:32:48,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:48,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 04:32:48,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453593969] [2020-10-13 04:32:48,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 04:32:48,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:48,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 04:32:48,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:32:48,114 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 14 states. [2020-10-13 04:32:48,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:48,398 INFO L93 Difference]: Finished difference Result 143 states and 153 transitions. [2020-10-13 04:32:48,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 04:32:48,399 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 134 [2020-10-13 04:32:48,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:48,400 INFO L225 Difference]: With dead ends: 143 [2020-10-13 04:32:48,400 INFO L226 Difference]: Without dead ends: 88 [2020-10-13 04:32:48,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-13 04:32:48,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-13 04:32:48,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-13 04:32:48,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-13 04:32:48,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-13 04:32:48,406 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 134 [2020-10-13 04:32:48,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:48,406 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-13 04:32:48,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 04:32:48,406 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-13 04:32:48,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-13 04:32:48,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:48,408 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:48,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 04:32:48,408 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:48,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:48,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1784377193, now seen corresponding path program 30 times [2020-10-13 04:32:48,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:48,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615367134] [2020-10-13 04:32:48,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:48,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:48,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:48,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:48,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:53,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:53,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 04:32:53,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:53,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 04:32:53,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:53,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:32:53,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 04:32:53,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:32:53,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:53,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:53,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:53,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:53,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:53,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:53,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:53,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:53,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:53,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:53,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:53,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:53,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:32:53,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:53,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:53,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:53,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:53,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:32:53,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:53,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 04:32:53,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:53,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:53,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:53,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:53,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:53,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 04:32:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:53,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:53,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:53,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:53,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:32:53,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:53,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 04:32:53,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:53,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:53,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:53,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:53,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:53,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 04:32:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:53,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:53,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:53,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:53,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:32:53,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:53,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 04:32:53,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:53,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:53,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:32:53,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:53,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:53,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2020-10-13 04:32:53,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615367134] [2020-10-13 04:32:53,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:53,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 04:32:53,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589442280] [2020-10-13 04:32:53,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 04:32:53,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:53,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 04:32:53,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:32:53,690 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 14 states. [2020-10-13 04:32:53,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:53,823 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2020-10-13 04:32:53,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 04:32:53,824 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 140 [2020-10-13 04:32:53,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:53,825 INFO L225 Difference]: With dead ends: 123 [2020-10-13 04:32:53,825 INFO L226 Difference]: Without dead ends: 90 [2020-10-13 04:32:53,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:32:53,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-13 04:32:53,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-13 04:32:53,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 04:32:53,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-13 04:32:53,830 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 140 [2020-10-13 04:32:53,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:53,831 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-13 04:32:53,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 04:32:53,831 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-13 04:32:53,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 04:32:53,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:53,832 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:53,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 04:32:53,832 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:53,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:53,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1450001685, now seen corresponding path program 31 times [2020-10-13 04:32:53,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:53,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573129478] [2020-10-13 04:32:53,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:53,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:53,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:53,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:54,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:58,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:58,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 04:32:58,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:58,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:32:58,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:58,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:32:58,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-13 04:32:58,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:32:58,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:58,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:58,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:58,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:58,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:58,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:58,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:58,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:58,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:58,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:58,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:58,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:58,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:32:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:58,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:58,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:58,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:32:58,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:58,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 04:32:58,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:58,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:32:58,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:32:58,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:32:58,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:59,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 04:32:59,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:59,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:59,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:59,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:59,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:32:59,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:59,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 04:32:59,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:59,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:59,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:32:59,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:59,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:59,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-13 04:32:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:59,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:59,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:59,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:59,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:32:59,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:59,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 04:32:59,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:59,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:59,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:32:59,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:59,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:59,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 0 proven. 657 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2020-10-13 04:32:59,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573129478] [2020-10-13 04:32:59,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:59,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 04:32:59,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118907002] [2020-10-13 04:32:59,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 04:32:59,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:59,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 04:32:59,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:32:59,114 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 15 states. [2020-10-13 04:32:59,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:59,450 INFO L93 Difference]: Finished difference Result 151 states and 161 transitions. [2020-10-13 04:32:59,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 04:32:59,450 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 142 [2020-10-13 04:32:59,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:59,451 INFO L225 Difference]: With dead ends: 151 [2020-10-13 04:32:59,452 INFO L226 Difference]: Without dead ends: 92 [2020-10-13 04:32:59,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-13 04:32:59,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-13 04:32:59,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-13 04:32:59,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 04:32:59,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-13 04:32:59,457 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 142 [2020-10-13 04:32:59,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:59,457 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-13 04:32:59,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 04:32:59,458 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-13 04:32:59,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-13 04:32:59,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:59,459 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 11, 11, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:59,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 04:32:59,459 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:59,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:59,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1537105427, now seen corresponding path program 32 times [2020-10-13 04:32:59,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:59,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169482456] [2020-10-13 04:32:59,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:59,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:59,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:59,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:59,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:04,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:04,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 04:33:04,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:04,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 04:33:04,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:04,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:33:04,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 04:33:04,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:33:04,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:04,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:04,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:04,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:04,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:04,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:04,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:04,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:04,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:04,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:04,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:04,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:04,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:33:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:04,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:04,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:04,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:04,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:04,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:04,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 04:33:04,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:04,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:04,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:04,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:04,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:04,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 04:33:04,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:04,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:04,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:04,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:04,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:04,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:04,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 04:33:04,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:04,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:04,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:04,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:04,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:04,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-13 04:33:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:04,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:04,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:04,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:04,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:04,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:04,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 04:33:04,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:04,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:04,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:04,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:04,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:04,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1504 trivial. 0 not checked. [2020-10-13 04:33:04,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169482456] [2020-10-13 04:33:04,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:04,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 04:33:04,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21964405] [2020-10-13 04:33:04,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 04:33:04,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:04,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 04:33:04,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:33:04,767 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 15 states. [2020-10-13 04:33:04,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:04,864 INFO L93 Difference]: Finished difference Result 129 states and 134 transitions. [2020-10-13 04:33:04,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 04:33:04,864 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 148 [2020-10-13 04:33:04,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:04,865 INFO L225 Difference]: With dead ends: 129 [2020-10-13 04:33:04,866 INFO L226 Difference]: Without dead ends: 94 [2020-10-13 04:33:04,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:33:04,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-13 04:33:04,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-13 04:33:04,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-13 04:33:04,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-13 04:33:04,879 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 148 [2020-10-13 04:33:04,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:04,880 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-13 04:33:04,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 04:33:04,880 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-13 04:33:04,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-13 04:33:04,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:04,881 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 12, 12, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:04,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 04:33:04,881 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:04,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:04,882 INFO L82 PathProgramCache]: Analyzing trace with hash 2073990033, now seen corresponding path program 33 times [2020-10-13 04:33:04,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:04,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662362933] [2020-10-13 04:33:04,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:04,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:04,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:04,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:05,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:09,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:09,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 04:33:09,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:09,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 04:33:09,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:09,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:33:09,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:33:09,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:33:09,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:10,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:10,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:10,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:10,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:10,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:10,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:10,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:10,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:10,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:10,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:10,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:10,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:33:10,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:10,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:10,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:10,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:10,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:10,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:10,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 04:33:10,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:10,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:10,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:10,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:10,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:10,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 04:33:10,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:10,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:10,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:10,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:10,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:10,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:10,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 04:33:10,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:10,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:10,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:10,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:10,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:10,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 04:33:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:10,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:10,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:10,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:10,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:10,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:10,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 04:33:10,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:10,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:10,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:10,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:10,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:10,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1648 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1527 trivial. 0 not checked. [2020-10-13 04:33:10,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662362933] [2020-10-13 04:33:10,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:10,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 04:33:10,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34637247] [2020-10-13 04:33:10,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 04:33:10,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:10,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 04:33:10,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:33:10,166 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 15 states. [2020-10-13 04:33:10,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:10,304 INFO L93 Difference]: Finished difference Result 160 states and 168 transitions. [2020-10-13 04:33:10,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 04:33:10,305 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 150 [2020-10-13 04:33:10,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:10,306 INFO L225 Difference]: With dead ends: 160 [2020-10-13 04:33:10,306 INFO L226 Difference]: Without dead ends: 96 [2020-10-13 04:33:10,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:33:10,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-13 04:33:10,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-13 04:33:10,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-13 04:33:10,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-13 04:33:10,312 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 150 [2020-10-13 04:33:10,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:10,313 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-13 04:33:10,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 04:33:10,313 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-13 04:33:10,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 04:33:10,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:10,314 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 12, 12, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:10,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 04:33:10,314 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:10,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:10,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1031029363, now seen corresponding path program 34 times [2020-10-13 04:33:10,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:10,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750234217] [2020-10-13 04:33:10,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:10,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:10,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:10,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:10,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:15,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:15,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 04:33:15,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:15,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 04:33:15,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:15,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:33:15,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:33:15,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:33:15,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:15,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:15,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:15,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:15,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:15,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:15,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:15,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:15,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:15,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:15,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:15,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:15,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:33:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:15,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:15,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:15,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:15,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:15,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:15,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 04:33:15,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:15,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:15,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:15,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:15,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:15,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 04:33:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:15,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:15,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:15,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:15,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:15,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:15,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 04:33:15,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:15,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:15,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:15,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:15,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:15,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 04:33:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:15,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:15,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:15,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:15,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:15,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:15,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 04:33:15,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:15,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:15,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:15,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:15,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:15,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1671 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1527 trivial. 0 not checked. [2020-10-13 04:33:15,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750234217] [2020-10-13 04:33:15,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:15,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 04:33:15,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955057888] [2020-10-13 04:33:15,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 04:33:15,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:15,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 04:33:15,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:33:15,634 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 16 states. [2020-10-13 04:33:15,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:15,789 INFO L93 Difference]: Finished difference Result 162 states and 170 transitions. [2020-10-13 04:33:15,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 04:33:15,790 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 152 [2020-10-13 04:33:15,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:15,791 INFO L225 Difference]: With dead ends: 162 [2020-10-13 04:33:15,791 INFO L226 Difference]: Without dead ends: 98 [2020-10-13 04:33:15,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:33:15,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-13 04:33:15,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-13 04:33:15,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-13 04:33:15,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-13 04:33:15,799 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 152 [2020-10-13 04:33:15,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:15,800 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-13 04:33:15,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 04:33:15,800 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-13 04:33:15,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-13 04:33:15,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:15,801 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 13, 13, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:15,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 04:33:15,801 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:15,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:15,802 INFO L82 PathProgramCache]: Analyzing trace with hash -526794539, now seen corresponding path program 35 times [2020-10-13 04:33:15,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:15,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246869974] [2020-10-13 04:33:15,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:15,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:15,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:15,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:16,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:20,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:20,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 04:33:20,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:20,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 04:33:20,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:20,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:33:20,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 04:33:20,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:33:20,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:20,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:20,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:20,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:20,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:20,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:20,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:20,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:20,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:20,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:20,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:20,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:20,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:33:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:20,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:20,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:21,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:21,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:21,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:21,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 04:33:21,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:21,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:21,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:21,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:21,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:21,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 04:33:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:21,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:21,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:21,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:21,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:21,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:21,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 04:33:21,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:21,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:21,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:21,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:21,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:21,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 04:33:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:21,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:21,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:21,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:21,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:21,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:21,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 04:33:21,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:21,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:21,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:21,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:21,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:21,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1696 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2020-10-13 04:33:21,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246869974] [2020-10-13 04:33:21,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:21,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 04:33:21,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488761555] [2020-10-13 04:33:21,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 04:33:21,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:21,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 04:33:21,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:33:21,138 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 16 states. [2020-10-13 04:33:21,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:21,244 INFO L93 Difference]: Finished difference Result 135 states and 140 transitions. [2020-10-13 04:33:21,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 04:33:21,245 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 154 [2020-10-13 04:33:21,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:21,246 INFO L225 Difference]: With dead ends: 135 [2020-10-13 04:33:21,246 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 04:33:21,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:33:21,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 04:33:21,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-13 04:33:21,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-13 04:33:21,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-13 04:33:21,251 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 154 [2020-10-13 04:33:21,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:21,252 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-13 04:33:21,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 04:33:21,252 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-13 04:33:21,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-13 04:33:21,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:21,254 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 13, 13, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:21,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 04:33:21,254 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:21,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:21,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1353953837, now seen corresponding path program 36 times [2020-10-13 04:33:21,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:21,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065901940] [2020-10-13 04:33:21,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:21,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:21,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:21,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:21,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:26,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:26,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-13 04:33:26,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:26,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 04:33:26,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:26,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:33:26,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 04:33:26,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:33:26,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:26,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:26,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:26,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:26,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:26,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:26,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:26,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:26,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:26,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:26,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:26,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:26,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:33:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:26,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:26,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:26,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:26,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:26,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 04:33:26,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:26,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:33:26,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:33:26,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:33:26,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:26,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 04:33:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:26,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:26,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:26,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:26,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:26,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:26,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 04:33:26,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:26,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:26,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:26,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:26,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:26,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 04:33:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:26,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:26,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:26,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:26,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:26,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:26,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 04:33:26,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:26,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:26,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:26,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:26,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:26,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1721 backedges. 0 proven. 776 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2020-10-13 04:33:26,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065901940] [2020-10-13 04:33:26,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:26,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 04:33:26,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561851347] [2020-10-13 04:33:26,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 04:33:26,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:26,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 04:33:26,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:33:26,656 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 16 states. [2020-10-13 04:33:26,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:26,960 INFO L93 Difference]: Finished difference Result 167 states and 177 transitions. [2020-10-13 04:33:26,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 04:33:26,961 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 156 [2020-10-13 04:33:26,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:26,962 INFO L225 Difference]: With dead ends: 167 [2020-10-13 04:33:26,962 INFO L226 Difference]: Without dead ends: 102 [2020-10-13 04:33:26,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-13 04:33:26,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-13 04:33:26,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-13 04:33:26,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-13 04:33:26,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-13 04:33:26,967 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 156 [2020-10-13 04:33:26,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:26,967 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-13 04:33:26,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 04:33:26,967 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-13 04:33:26,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-13 04:33:26,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:26,968 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:26,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 04:33:26,968 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:26,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:26,969 INFO L82 PathProgramCache]: Analyzing trace with hash 212737617, now seen corresponding path program 37 times [2020-10-13 04:33:26,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:26,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711118439] [2020-10-13 04:33:26,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:26,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:27,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:27,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:27,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:31,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:31,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 04:33:31,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:31,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:33:31,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:31,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:33:31,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-13 04:33:31,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:33:31,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:31,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:31,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:31,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:31,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:31,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:32,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:32,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:32,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:32,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:32,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:32,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:32,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:33:32,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:32,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:32,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:32,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:32,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:32,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:32,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 04:33:32,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:32,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:32,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:32,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:32,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:32,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 04:33:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:32,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:32,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:32,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:32,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:32,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 04:33:32,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:32,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:33:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:33:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:33:32,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:32,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 04:33:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:32,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:32,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:32,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:32,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:32,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:32,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 04:33:32,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:32,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:32,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:33:32,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:32,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:32,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 368 proven. 537 refuted. 0 times theorem prover too weak. 1047 trivial. 0 not checked. [2020-10-13 04:33:32,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711118439] [2020-10-13 04:33:32,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:32,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 04:33:32,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41390686] [2020-10-13 04:33:32,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 04:33:32,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:32,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 04:33:32,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:33:32,290 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 17 states. [2020-10-13 04:33:32,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:32,694 INFO L93 Difference]: Finished difference Result 171 states and 181 transitions. [2020-10-13 04:33:32,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 04:33:32,694 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 162 [2020-10-13 04:33:32,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:32,695 INFO L225 Difference]: With dead ends: 171 [2020-10-13 04:33:32,695 INFO L226 Difference]: Without dead ends: 104 [2020-10-13 04:33:32,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-13 04:33:32,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-13 04:33:32,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-13 04:33:32,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-13 04:33:32,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2020-10-13 04:33:32,701 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 162 [2020-10-13 04:33:32,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:32,702 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2020-10-13 04:33:32,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 04:33:32,702 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2020-10-13 04:33:32,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 04:33:32,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:32,703 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 13, 13, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:32,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 04:33:32,703 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:32,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:32,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1704634289, now seen corresponding path program 38 times [2020-10-13 04:33:32,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:32,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454537730] [2020-10-13 04:33:32,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:32,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:32,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:32,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:33,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:37,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:37,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 04:33:37,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:37,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 04:33:37,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:37,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:33:37,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-13 04:33:37,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:33:37,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:37,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:37,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:37,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:37,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:37,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:37,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:37,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:37,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:37,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:37,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:37,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:37,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:37,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:33:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:37,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:37,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:37,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:37,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:37,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:37,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 04:33:37,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:37,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:37,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:37,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:37,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:37,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 04:33:37,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:37,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:37,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:38,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:38,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:38,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:38,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 04:33:38,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:38,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:38,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:38,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:38,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:38,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 04:33:38,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:38,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:38,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:38,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:38,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:38,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:38,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 04:33:38,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:38,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:38,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:33:38,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:38,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:38,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2201 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 2032 trivial. 0 not checked. [2020-10-13 04:33:38,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454537730] [2020-10-13 04:33:38,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:38,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 04:33:38,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900211067] [2020-10-13 04:33:38,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 04:33:38,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:38,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 04:33:38,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:33:38,073 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 17 states. [2020-10-13 04:33:38,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:38,212 INFO L93 Difference]: Finished difference Result 145 states and 150 transitions. [2020-10-13 04:33:38,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 04:33:38,212 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 168 [2020-10-13 04:33:38,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:38,213 INFO L225 Difference]: With dead ends: 145 [2020-10-13 04:33:38,213 INFO L226 Difference]: Without dead ends: 106 [2020-10-13 04:33:38,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:33:38,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-13 04:33:38,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-13 04:33:38,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-13 04:33:38,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-13 04:33:38,219 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 168 [2020-10-13 04:33:38,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:38,219 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-13 04:33:38,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 04:33:38,220 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-13 04:33:38,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 04:33:38,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:38,221 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:38,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 04:33:38,221 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:38,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:38,222 INFO L82 PathProgramCache]: Analyzing trace with hash 604360397, now seen corresponding path program 39 times [2020-10-13 04:33:38,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:38,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449665763] [2020-10-13 04:33:38,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:38,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:38,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:38,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:38,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:38,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:43,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:43,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 04:33:43,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:43,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 04:33:43,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:43,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:33:43,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:33:43,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:33:43,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:43,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:43,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:43,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:43,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:43,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:43,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:43,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:43,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:43,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:43,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:43,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:43,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:33:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:43,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:43,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:43,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:43,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:43,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:43,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 04:33:43,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:43,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:43,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:33:43,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:43,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:43,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 04:33:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:43,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:43,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:43,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:43,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:43,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:43,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 04:33:43,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:43,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:43,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:33:43,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:43,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:33:43,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 04:33:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:43,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:43,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:43,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:43,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:43,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:43,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 04:33:43,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:43,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:43,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:33:43,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:43,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:43,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2228 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2020-10-13 04:33:43,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449665763] [2020-10-13 04:33:43,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:43,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 04:33:43,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905824210] [2020-10-13 04:33:43,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 04:33:43,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:43,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 04:33:43,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:33:43,669 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 17 states. [2020-10-13 04:33:43,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:43,820 INFO L93 Difference]: Finished difference Result 180 states and 188 transitions. [2020-10-13 04:33:43,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 04:33:43,821 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 170 [2020-10-13 04:33:43,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:43,822 INFO L225 Difference]: With dead ends: 180 [2020-10-13 04:33:43,822 INFO L226 Difference]: Without dead ends: 108 [2020-10-13 04:33:43,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:33:43,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-13 04:33:43,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-13 04:33:43,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-13 04:33:43,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-10-13 04:33:43,832 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 170 [2020-10-13 04:33:43,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:43,834 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-10-13 04:33:43,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 04:33:43,835 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-10-13 04:33:43,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 04:33:43,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:43,836 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:43,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 04:33:43,836 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:43,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:43,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1086244689, now seen corresponding path program 40 times [2020-10-13 04:33:43,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:43,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325222824] [2020-10-13 04:33:43,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:43,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:43,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:43,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:44,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:48,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:48,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 04:33:48,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:48,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 04:33:48,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:33:48,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 04:33:48,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 04:33:48,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:48,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:48,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:48,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:48,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:48,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:48,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:48,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:48,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:48,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:48,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:48,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:48,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:33:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:48,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:48,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:48,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:48,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:48,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:48,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 04:33:48,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:48,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:48,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:48,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:48,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:48,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 04:33:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:48,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:48,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:48,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:48,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:48,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 04:33:48,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:48,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:33:48,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:33:48,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 04:33:48,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:49,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-13 04:33:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:49,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:49,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:49,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:49,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:49,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:49,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 04:33:49,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:49,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:49,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:33:49,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:49,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:49,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2255 backedges. 424 proven. 620 refuted. 0 times theorem prover too weak. 1211 trivial. 0 not checked. [2020-10-13 04:33:49,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325222824] [2020-10-13 04:33:49,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:49,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 04:33:49,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548614950] [2020-10-13 04:33:49,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 04:33:49,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:49,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 04:33:49,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:33:49,215 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 18 states. [2020-10-13 04:33:49,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:49,644 INFO L93 Difference]: Finished difference Result 181 states and 191 transitions. [2020-10-13 04:33:49,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 04:33:49,644 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 172 [2020-10-13 04:33:49,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:49,645 INFO L225 Difference]: With dead ends: 181 [2020-10-13 04:33:49,646 INFO L226 Difference]: Without dead ends: 110 [2020-10-13 04:33:49,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 04:33:49,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-13 04:33:49,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-13 04:33:49,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-13 04:33:49,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2020-10-13 04:33:49,651 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 172 [2020-10-13 04:33:49,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:49,651 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2020-10-13 04:33:49,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 04:33:49,651 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2020-10-13 04:33:49,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-13 04:33:49,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:49,652 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 14, 14, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:49,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 04:33:49,652 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:49,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:49,653 INFO L82 PathProgramCache]: Analyzing trace with hash 337367853, now seen corresponding path program 41 times [2020-10-13 04:33:49,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:49,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087656653] [2020-10-13 04:33:49,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:49,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:49,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:49,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:49,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:54,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:54,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-13 04:33:54,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:54,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 04:33:54,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:54,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:33:54,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:33:54,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 04:33:54,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:54,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:54,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:54,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:54,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:54,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:54,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:54,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:54,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:54,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:54,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:54,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:54,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:33:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:54,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:54,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:54,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:54,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:33:54,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:54,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 04:33:54,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:54,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:54,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:33:54,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:54,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:54,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 04:33:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:54,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:54,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:55,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:55,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:33:55,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:55,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 04:33:55,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:55,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:55,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:33:55,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:55,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:55,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 04:33:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:55,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:55,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:55,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:55,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:33:55,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:55,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 04:33:55,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:55,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:55,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:33:55,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:55,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:55,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2522 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2326 trivial. 0 not checked. [2020-10-13 04:33:55,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087656653] [2020-10-13 04:33:55,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:55,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 04:33:55,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289783246] [2020-10-13 04:33:55,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 04:33:55,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:55,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 04:33:55,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:33:55,096 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 18 states. [2020-10-13 04:33:55,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:55,273 INFO L93 Difference]: Finished difference Result 186 states and 194 transitions. [2020-10-13 04:33:55,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 04:33:55,274 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 178 [2020-10-13 04:33:55,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:55,274 INFO L225 Difference]: With dead ends: 186 [2020-10-13 04:33:55,275 INFO L226 Difference]: Without dead ends: 112 [2020-10-13 04:33:55,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:33:55,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-13 04:33:55,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-10-13 04:33:55,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-13 04:33:55,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2020-10-13 04:33:55,282 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 178 [2020-10-13 04:33:55,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:55,282 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2020-10-13 04:33:55,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 04:33:55,282 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2020-10-13 04:33:55,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 04:33:55,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:55,284 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:55,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 04:33:55,284 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:55,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:55,284 INFO L82 PathProgramCache]: Analyzing trace with hash 977812239, now seen corresponding path program 42 times [2020-10-13 04:33:55,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:55,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684910159] [2020-10-13 04:33:55,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:55,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:55,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:55,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:55,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:00,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:00,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 04:34:00,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:34:00,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 04:34:00,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:00,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:34:00,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-13 04:34:00,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 04:34:00,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:00,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:00,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:00,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:00,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:00,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:00,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:34:00,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:00,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:00,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:00,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:00,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:00,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 04:34:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:00,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:00,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:00,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:00,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:34:00,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:00,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 04:34:00,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:00,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:00,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:00,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:00,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:00,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 04:34:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:00,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:00,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:00,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:00,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:34:00,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:00,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 04:34:00,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:00,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:00,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:00,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:00,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:00,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-13 04:34:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:00,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:00,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:00,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:00,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:34:00,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:00,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 04:34:00,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:00,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:00,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:34:00,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:00,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:00,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2355 trivial. 0 not checked. [2020-10-13 04:34:00,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684910159] [2020-10-13 04:34:00,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:00,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 04:34:00,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461029846] [2020-10-13 04:34:00,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 04:34:00,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:00,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 04:34:00,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:34:00,692 INFO L87 Difference]: Start difference. First operand 111 states and 115 transitions. Second operand 18 states. [2020-10-13 04:34:00,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:00,871 INFO L93 Difference]: Finished difference Result 155 states and 160 transitions. [2020-10-13 04:34:00,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 04:34:00,872 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 180 [2020-10-13 04:34:00,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:00,873 INFO L225 Difference]: With dead ends: 155 [2020-10-13 04:34:00,873 INFO L226 Difference]: Without dead ends: 114 [2020-10-13 04:34:00,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:34:00,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-13 04:34:00,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2020-10-13 04:34:00,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-13 04:34:00,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 117 transitions. [2020-10-13 04:34:00,879 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 117 transitions. Word has length 180 [2020-10-13 04:34:00,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:00,879 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 117 transitions. [2020-10-13 04:34:00,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 04:34:00,880 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 117 transitions. [2020-10-13 04:34:00,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-13 04:34:00,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:00,881 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:34:00,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 04:34:00,881 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:00,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:00,882 INFO L82 PathProgramCache]: Analyzing trace with hash 2109469069, now seen corresponding path program 43 times [2020-10-13 04:34:00,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:00,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621391956] [2020-10-13 04:34:00,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:00,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:00,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:00,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:01,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:05,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:05,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-13 04:34:05,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:34:05,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-13 04:34:05,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:05,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 04:34:05,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 04:34:05,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 04:34:05,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:05,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:05,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:05,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:05,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:05,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:05,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:34:05,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:05,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:05,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:05,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:05,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:05,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 04:34:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:05,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:05,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:05,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:34:05,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:05,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 04:34:05,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:05,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 04:34:05,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:34:05,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 04:34:05,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:06,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 04:34:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:06,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:06,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:06,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:06,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:34:06,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:06,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 04:34:06,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:06,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:06,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:34:06,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:06,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:06,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-13 04:34:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:06,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:06,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:06,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:06,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:34:06,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:06,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 04:34:06,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:06,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:06,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:34:06,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:06,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:06,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 0 proven. 1193 refuted. 0 times theorem prover too weak. 1387 trivial. 0 not checked. [2020-10-13 04:34:06,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621391956] [2020-10-13 04:34:06,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:06,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 04:34:06,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117836110] [2020-10-13 04:34:06,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 04:34:06,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:06,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 04:34:06,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 04:34:06,327 INFO L87 Difference]: Start difference. First operand 113 states and 117 transitions. Second operand 19 states. [2020-10-13 04:34:06,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:06,765 INFO L93 Difference]: Finished difference Result 191 states and 201 transitions. [2020-10-13 04:34:06,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 04:34:06,765 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 182 [2020-10-13 04:34:06,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:06,767 INFO L225 Difference]: With dead ends: 191 [2020-10-13 04:34:06,767 INFO L226 Difference]: Without dead ends: 116 [2020-10-13 04:34:06,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 04:34:06,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-13 04:34:06,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2020-10-13 04:34:06,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-13 04:34:06,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 119 transitions. [2020-10-13 04:34:06,775 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 119 transitions. Word has length 182 [2020-10-13 04:34:06,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:06,776 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 119 transitions. [2020-10-13 04:34:06,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 04:34:06,776 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 119 transitions. [2020-10-13 04:34:06,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-13 04:34:06,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:06,777 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 15, 15, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:34:06,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 04:34:06,777 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:06,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:06,778 INFO L82 PathProgramCache]: Analyzing trace with hash -679162741, now seen corresponding path program 44 times [2020-10-13 04:34:06,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:06,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067812890] [2020-10-13 04:34:06,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:06,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:06,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:06,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:06,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:06,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking...