/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:27:40,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:27:40,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:27:40,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:27:40,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:27:40,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:27:40,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:27:40,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:27:40,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:27:40,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:27:40,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:27:40,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:27:40,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:27:40,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:27:40,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:27:40,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:27:40,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:27:40,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:27:40,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:27:40,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:27:40,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:27:40,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:27:40,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:27:40,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:27:40,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:27:40,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:27:40,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:27:40,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:27:40,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:27:40,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:27:40,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:27:40,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:27:40,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:27:40,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:27:40,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:27:40,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:27:40,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:27:40,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:27:40,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:27:40,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:27:40,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:27:40,612 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 05:27:40,663 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:27:40,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:27:40,665 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:27:40,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:27:40,666 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:27:40,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:27:40,667 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:27:40,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:27:40,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:27:40,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:27:40,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:27:40,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:27:40,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:27:40,669 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:27:40,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:27:40,669 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:27:40,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:27:40,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:27:40,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:27:40,670 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:27:40,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:27:40,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:27:40,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:27:40,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:27:40,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:27:40,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:27:40,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:27:40,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:27:40,672 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:27:40,672 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:27:41,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:27:41,159 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:27:41,164 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:27:41,166 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:27:41,166 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:27:41,167 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_5-2.c [2020-09-25 05:27:41,261 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0472e1f42/c66471a4725a42678d93a48a9bf5b247/FLAG9e2013aea [2020-09-25 05:27:41,798 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:27:41,799 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_5-2.c [2020-09-25 05:27:41,807 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0472e1f42/c66471a4725a42678d93a48a9bf5b247/FLAG9e2013aea [2020-09-25 05:27:42,151 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0472e1f42/c66471a4725a42678d93a48a9bf5b247 [2020-09-25 05:27:42,164 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:27:42,168 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:27:42,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:27:42,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:27:42,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:27:42,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:27:42" (1/1) ... [2020-09-25 05:27:42,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f84b4d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:42, skipping insertion in model container [2020-09-25 05:27:42,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:27:42" (1/1) ... [2020-09-25 05:27:42,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:27:42,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:27:42,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:27:42,431 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:27:42,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:27:42,467 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:27:42,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:42 WrapperNode [2020-09-25 05:27:42,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:27:42,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:27:42,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:27:42,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:27:42,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:42" (1/1) ... [2020-09-25 05:27:42,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:42" (1/1) ... [2020-09-25 05:27:42,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:42" (1/1) ... [2020-09-25 05:27:42,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:42" (1/1) ... [2020-09-25 05:27:42,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:42" (1/1) ... [2020-09-25 05:27:42,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:42" (1/1) ... [2020-09-25 05:27:42,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:42" (1/1) ... [2020-09-25 05:27:42,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:27:42,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:27:42,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:27:42,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:27:42,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:27:42,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:27:42,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:27:42,652 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 05:27:42,652 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:27:42,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:27:42,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:27:42,653 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 05:27:42,653 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:27:42,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:27:42,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:27:42,853 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:27:42,853 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 05:27:42,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:27:42 BoogieIcfgContainer [2020-09-25 05:27:42,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:27:42,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:27:42,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:27:42,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:27:42,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:27:42" (1/3) ... [2020-09-25 05:27:42,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c4aa95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:27:42, skipping insertion in model container [2020-09-25 05:27:42,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:42" (2/3) ... [2020-09-25 05:27:42,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c4aa95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:27:42, skipping insertion in model container [2020-09-25 05:27:42,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:27:42" (3/3) ... [2020-09-25 05:27:42,869 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_5-2.c [2020-09-25 05:27:42,878 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:27:42,887 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:27:42,910 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:27:42,945 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:27:42,946 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:27:42,946 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:27:42,946 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:27:42,946 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:27:42,946 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:27:42,947 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:27:42,947 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:27:42,970 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 05:27:42,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 05:27:42,978 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:42,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:27:42,979 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:42,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:42,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 05:27:42,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:42,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462176506] [2020-09-25 05:27:42,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:43,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:43,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:43,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:43,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:27:43,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:27:43,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-25 05:27:43,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:43,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:43,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:27:43,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 05:27:43,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:43,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:27:43,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:43,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:43,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:43,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:43,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:43,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:27:43,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:43,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:43,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:43,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:43,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:43,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:27:43,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:43,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:43,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:43,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:43,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:43,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 05:27:43,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:43,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:43,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:27:43,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:43,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:27:43,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:43,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:27:43,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462176506] [2020-09-25 05:27:43,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:27:43,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:27:43,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264120484] [2020-09-25 05:27:43,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:27:43,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:43,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:27:43,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:27:43,568 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 05:27:43,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:43,656 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 05:27:43,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:27:43,658 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 05:27:43,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:43,675 INFO L225 Difference]: With dead ends: 44 [2020-09-25 05:27:43,676 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 05:27:43,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:27:43,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 05:27:43,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 05:27:43,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 05:27:43,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 05:27:43,733 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 05:27:43,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:43,733 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 05:27:43,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:27:43,734 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 05:27:43,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 05:27:43,736 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:43,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:27:43,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:27:43,737 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:43,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:43,737 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 05:27:43,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:43,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856649050] [2020-09-25 05:27:43,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:43,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:43,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:43,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:43,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 05:27:43,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:27:43,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-25 05:27:43,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:43,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:43,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:27:43,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:27:43,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:43,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:43,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:43,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:43,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:43,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:43,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:43,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:27:43,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:43,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:43,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:43,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:43,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:43,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:43,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:43,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:43,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:43,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:27:43,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:43,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 05:27:43,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:43,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:43,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:27:43,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:27:43,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:27:43,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:44,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:27:44,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856649050] [2020-09-25 05:27:44,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:27:44,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:27:44,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982996900] [2020-09-25 05:27:44,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:27:44,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:44,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:27:44,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:27:44,026 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 05:27:44,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:44,081 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 05:27:44,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:27:44,081 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 05:27:44,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:44,083 INFO L225 Difference]: With dead ends: 36 [2020-09-25 05:27:44,083 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 05:27:44,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:27:44,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 05:27:44,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 05:27:44,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 05:27:44,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 05:27:44,093 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 05:27:44,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:44,094 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 05:27:44,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:27:44,094 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 05:27:44,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 05:27:44,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:44,096 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:27:44,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:27:44,096 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:44,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:44,097 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 05:27:44,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:44,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365246344] [2020-09-25 05:27:44,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:44,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:44,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:44,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:44,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:44,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:45,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:45,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 05:27:45,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:27:45,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1724 [2020-09-25 05:27:45,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:45,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:45,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:45,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:27:45,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 05:27:45,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:45,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:45,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:45,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:45,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:45,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:45,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:27:45,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:45,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:45,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:45,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:45,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:45,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:45,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:45,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:45,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:45,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:45,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:46,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:46,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:27:46,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:27:46,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-25 05:27:46,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:46,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:46,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:46,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:27:46,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:27:46,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:46,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:46,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:46,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:46,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:46,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:46,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 05:27:46,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:46,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:46,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:27:46,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:46,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:46,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:27:46,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:27:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:46,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:46,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:46,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:46,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:46,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 05:27:46,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:46,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:46,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:27:46,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:46,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:27:46,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:46,203 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 05:27:46,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365246344] [2020-09-25 05:27:46,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:27:46,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:27:46,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129208286] [2020-09-25 05:27:46,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:27:46,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:46,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:27:46,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:27:46,218 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-09-25 05:27:46,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:46,357 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-09-25 05:27:46,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:27:46,358 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-25 05:27:46,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:46,360 INFO L225 Difference]: With dead ends: 44 [2020-09-25 05:27:46,360 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 05:27:46,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:27:46,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 05:27:46,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-09-25 05:27:46,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 05:27:46,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-25 05:27:46,372 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-25 05:27:46,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:46,372 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-25 05:27:46,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:27:46,373 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-25 05:27:46,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 05:27:46,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:46,375 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:27:46,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:27:46,376 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:46,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:46,376 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 05:27:46,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:46,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254794035] [2020-09-25 05:27:46,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:46,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:46,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:46,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:46,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:46,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:48,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:48,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 05:27:48,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:27:48,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1798 [2020-09-25 05:27:48,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:48,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:48,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:27:48,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 05:27:48,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 05:27:48,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:48,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:48,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:48,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:48,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:48,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:48,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:27:48,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:48,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:48,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:48,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:48,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:48,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:48,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:48,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:48,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:48,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:48,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:48,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:27:48,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:27:48,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-09-25 05:27:48,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:48,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:48,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:27:48,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:48,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 05:27:48,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:48,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:48,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:48,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:48,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:27:48,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:48,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:27:48,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:48,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:48,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:27:48,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:48,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:48,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:48,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:27:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:48,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:48,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:48,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:27:48,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:48,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:27:48,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:48,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:48,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:27:48,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:48,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:27:48,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:48,838 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 05:27:48,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254794035] [2020-09-25 05:27:48,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:27:48,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 05:27:48,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705876549] [2020-09-25 05:27:48,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:27:48,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:48,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:27:48,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:27:48,841 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 9 states. [2020-09-25 05:27:48,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:48,941 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2020-09-25 05:27:48,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:27:48,942 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-25 05:27:48,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:48,944 INFO L225 Difference]: With dead ends: 66 [2020-09-25 05:27:48,945 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 05:27:48,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:27:48,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 05:27:48,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 40. [2020-09-25 05:27:48,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 05:27:48,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 54 transitions. [2020-09-25 05:27:48,958 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 54 transitions. Word has length 35 [2020-09-25 05:27:48,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:48,958 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 54 transitions. [2020-09-25 05:27:48,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:27:48,958 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 54 transitions. [2020-09-25 05:27:48,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 05:27:48,961 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:48,961 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:27:48,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:27:48,961 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:48,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:48,962 INFO L82 PathProgramCache]: Analyzing trace with hash -538497119, now seen corresponding path program 2 times [2020-09-25 05:27:48,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:48,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965684260] [2020-09-25 05:27:48,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:48,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:48,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:49,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:49,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:49,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:49,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:49,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:49,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:52,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:52,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:53,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:53,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 05:27:53,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:27:53,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:27:53,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:53,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:53,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:27:53,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:27:53,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:27:53,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:53,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:53,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:53,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:53,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:53,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:53,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:53,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:27:53,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:53,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:53,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:53,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:53,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:53,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:27:53,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:54,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:54,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:54,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:54,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:54,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:54,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:54,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:55,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:55,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 05:27:55,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:27:55,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1932 [2020-09-25 05:27:55,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:55,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:55,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:27:55,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 05:27:55,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:27:55,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:55,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:55,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:55,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:55,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:55,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:27:55,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:55,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:27:55,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:55,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:55,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:27:55,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:55,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:27:55,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:55,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:27:55,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:55,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:56,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:56,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:56,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:56,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:56,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:56,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:56,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:56,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:27:56,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:27:56,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-09-25 05:27:56,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:56,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:56,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:27:56,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:27:56,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 05:27:56,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:56,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:56,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:56,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:56,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:27:56,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:56,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:27:56,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:56,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:56,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:27:56,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:56,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:27:56,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:56,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:27:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:56,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:56,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:56,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:27:56,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:56,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:27:56,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:56,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:56,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:27:56,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:56,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:27:56,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:56,291 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 22 proven. 19 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 05:27:56,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965684260] [2020-09-25 05:27:56,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:27:56,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:27:56,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125398477] [2020-09-25 05:27:56,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:27:56,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:56,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:27:56,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:27:56,294 INFO L87 Difference]: Start difference. First operand 40 states and 54 transitions. Second operand 7 states. [2020-09-25 05:27:56,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:56,428 INFO L93 Difference]: Finished difference Result 83 states and 118 transitions. [2020-09-25 05:27:56,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:27:56,429 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-09-25 05:27:56,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:56,431 INFO L225 Difference]: With dead ends: 83 [2020-09-25 05:27:56,431 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 05:27:56,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:27:56,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 05:27:56,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 40. [2020-09-25 05:27:56,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 05:27:56,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2020-09-25 05:27:56,441 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 53 [2020-09-25 05:27:56,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:56,442 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2020-09-25 05:27:56,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:27:56,442 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2020-09-25 05:27:56,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 05:27:56,445 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:56,445 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:27:56,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:27:56,446 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:56,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:56,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 1 times [2020-09-25 05:27:56,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:56,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220561363] [2020-09-25 05:27:56,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:56,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:56,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:56,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:56,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:56,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:56,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:56,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:59,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:01,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:01,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 05:28:01,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:28:01,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 05:28:01,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:01,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:01,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:28:01,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:28:01,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 05:28:01,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:01,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:28:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:01,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:01,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:01,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:28:01,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:01,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:28:01,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:01,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:01,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:01,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:01,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:01,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:01,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:28:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:01,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:01,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:01,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:01,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:02,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:02,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:02,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:04,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:04,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 05:28:04,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:28:04,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2937 [2020-09-25 05:28:04,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:04,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:04,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:28:04,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:28:04,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 05:28:04,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:04,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:04,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:04,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:04,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:04,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:04,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:28:04,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:28:04,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 05:28:04,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:04,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:04,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:28:04,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:04,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:28:04,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:04,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:04,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:04,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:04,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:04,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:04,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:28:04,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:04,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:04,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:04,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:04,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:04,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:04,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:28:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:04,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:04,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:04,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:04,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:04,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:28:04,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:04,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:04,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:04,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:04,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:04,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:04,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 05:28:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:04,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:04,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:04,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:28:04,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:04,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:28:04,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:04,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:04,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:28:04,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:04,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:28:04,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:04,562 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 05:28:04,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220561363] [2020-09-25 05:28:04,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:28:04,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:28:04,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694551432] [2020-09-25 05:28:04,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:28:04,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:28:04,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:28:04,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:28:04,566 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 6 states. [2020-09-25 05:28:04,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:28:04,637 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2020-09-25 05:28:04,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:28:04,638 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-09-25 05:28:04,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:28:04,640 INFO L225 Difference]: With dead ends: 52 [2020-09-25 05:28:04,640 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 05:28:04,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:28:04,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 05:28:04,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-25 05:28:04,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 05:28:04,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2020-09-25 05:28:04,653 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 51 [2020-09-25 05:28:04,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:28:04,654 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2020-09-25 05:28:04,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:28:04,654 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2020-09-25 05:28:04,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 05:28:04,662 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:28:04,662 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:28:04,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:28:04,665 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:28:04,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:28:04,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1086233509, now seen corresponding path program 2 times [2020-09-25 05:28:04,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:28:04,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688023325] [2020-09-25 05:28:04,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:28:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:04,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:04,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:04,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:04,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:04,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:05,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:05,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:05,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:05,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:05,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:06,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:06,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:06,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:06,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:06,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:06,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:09,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:09,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 05:28:09,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 05:28:09,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 05:28:09,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:09,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:09,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:28:09,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 05:28:09,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:28:09,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:09,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:28:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:09,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:09,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:09,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:28:09,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:09,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:28:09,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:09,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:09,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:09,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:09,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:09,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:09,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:28:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:09,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:09,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:09,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:09,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:09,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:09,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:09,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:10,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:10,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:10,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:13,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:13,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:13,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:14,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:14,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 05:28:14,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 05:28:14,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 05:28:14,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:14,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:14,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:28:14,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 05:28:14,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:28:14,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:14,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:14,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:14,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:14,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:14,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:28:14,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:28:14,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 05:28:14,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:14,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:14,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:14,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:14,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:14,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:14,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:14,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:14,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:14,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:14,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:14,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:14,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:28:14,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:14,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:14,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:14,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:14,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:14,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:14,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:28:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:14,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:14,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:14,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:14,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:14,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:28:14,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:14,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:14,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:14,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:14,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:14,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:14,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 05:28:14,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:14,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:14,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:14,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:14,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:15,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:15,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 05:28:15,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:28:15,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 878 [2020-09-25 05:28:15,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:15,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:15,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:28:15,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 05:28:15,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:28:15,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:15,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:15,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:15,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:15,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:28:15,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:15,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 05:28:15,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:15,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:15,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:28:15,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 05:28:15,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:28:15,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:15,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:15,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:15,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:15,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:15,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:15,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:28:15,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:15,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:15,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:28:15,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:28:15,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:28:15,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:15,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:28:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:15,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:15,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:15,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:15,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:15,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:28:15,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:15,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:15,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:15,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 05:28:15,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:15,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:15,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 05:28:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:15,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:15,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:15,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:28:15,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:15,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:28:15,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:15,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:15,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:15,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 05:28:15,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:15,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:15,783 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 74 proven. 10 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-09-25 05:28:15,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688023325] [2020-09-25 05:28:15,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:28:15,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:28:15,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111610819] [2020-09-25 05:28:15,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:28:15,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:28:15,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:28:15,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:28:15,786 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 6 states. [2020-09-25 05:28:15,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:28:15,866 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2020-09-25 05:28:15,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:28:15,867 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-09-25 05:28:15,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:28:15,868 INFO L225 Difference]: With dead ends: 74 [2020-09-25 05:28:15,868 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 05:28:15,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:28:15,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 05:28:15,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-25 05:28:15,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 05:28:15,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 05:28:15,875 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 85 [2020-09-25 05:28:15,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:28:15,876 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 05:28:15,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:28:15,876 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 05:28:15,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 05:28:15,877 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:28:15,877 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:28:15,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 05:28:15,878 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:28:15,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:28:15,878 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 3 times [2020-09-25 05:28:15,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:28:15,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243433564] [2020-09-25 05:28:15,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:28:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:15,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:15,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:15,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:15,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:16,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:16,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:16,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:16,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:18,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:18,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:20,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:20,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 05:28:20,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:28:20,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 05:28:20,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:20,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:20,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 05:28:20,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:28:20,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 05:28:20,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:20,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:28:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:20,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:20,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:20,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:28:20,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:20,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:28:20,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:20,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:20,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:20,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:20,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:20,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:20,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:28:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:20,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:20,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:21,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:21,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:21,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:21,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:21,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:21,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:21,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:22,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:22,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:22,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:22,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:22,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:23,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:25,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:25,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 05:28:25,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 05:28:25,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:28:25,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:25,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:25,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 05:28:25,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 05:28:25,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 05:28:25,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:25,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:25,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:25,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:26,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:26,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 05:28:26,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:28:26,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 05:28:26,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:26,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:26,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:28:26,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:26,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 05:28:26,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:26,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:26,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:26,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:26,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:28:26,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:26,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:28:26,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:26,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:26,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:28:26,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:26,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:28:26,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:26,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:28:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:26,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:26,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:26,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:26,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:26,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:28:26,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:26,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:26,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:28:26,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:26,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:28:26,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:26,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:28:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:26,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:26,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:26,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:26,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:26,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:26,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:27,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:27,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 05:28:27,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:28:27,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1455 [2020-09-25 05:28:27,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:27,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:27,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:28:27,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:28:27,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 05:28:27,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:27,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:27,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:27,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:27,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 05:28:27,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:27,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 05:28:27,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:27,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:27,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:28:27,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:27,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 05:28:27,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:27,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:27,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:27,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:27,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:28:27,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:27,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:28:27,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:27,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:27,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:27,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:27,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:27,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:27,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:28:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:27,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:27,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:27,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:27,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:27,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:28:27,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:27,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:27,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:27,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:27,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:27,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:27,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:28:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:27,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:27,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:27,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:27,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:28:27,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:28:27,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:28:27,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:27,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:27,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:28:27,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:27,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:28:27,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:27,772 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 74 proven. 73 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 05:28:27,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243433564] [2020-09-25 05:28:27,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:28:27,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 05:28:27,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273324637] [2020-09-25 05:28:27,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 05:28:27,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:28:27,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 05:28:27,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:28:27,774 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 10 states. [2020-09-25 05:28:28,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:28:28,044 INFO L93 Difference]: Finished difference Result 95 states and 128 transitions. [2020-09-25 05:28:28,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:28:28,044 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-09-25 05:28:28,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:28:28,046 INFO L225 Difference]: With dead ends: 95 [2020-09-25 05:28:28,047 INFO L226 Difference]: Without dead ends: 61 [2020-09-25 05:28:28,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-25 05:28:28,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-25 05:28:28,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-09-25 05:28:28,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 05:28:28,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 77 transitions. [2020-09-25 05:28:28,063 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 77 transitions. Word has length 87 [2020-09-25 05:28:28,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:28:28,064 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 77 transitions. [2020-09-25 05:28:28,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 05:28:28,064 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 77 transitions. [2020-09-25 05:28:28,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 05:28:28,065 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:28:28,065 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:28:28,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 05:28:28,067 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:28:28,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:28:28,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1108116753, now seen corresponding path program 4 times [2020-09-25 05:28:28,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:28:28,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136828278] [2020-09-25 05:28:28,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:28:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:28,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:28,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:28,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:28,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:28,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:28,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:28,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:28,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:28,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:28,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:29,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:29,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:29,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:29,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:29,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:31,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:33,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:33,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 05:28:33,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 05:28:33,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 05:28:33,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:33,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:33,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:28:33,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 05:28:33,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 05:28:33,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:33,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:28:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:33,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:33,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:33,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:28:33,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:33,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:28:33,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:33,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:33,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:33,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:28:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:33,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:33,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:33,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:33,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:33,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:33,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:34,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:34,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:35,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:35,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:36,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:36,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking...