/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/id_o200.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:17:07,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:17:07,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:17:07,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:17:07,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:17:07,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:17:07,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:17:07,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:17:07,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:17:07,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:17:07,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:17:07,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:17:07,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:17:07,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:17:07,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:17:07,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:17:07,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:17:07,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:17:07,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:17:07,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:17:07,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:17:07,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:17:07,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:17:07,370 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:17:07,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:17:07,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:17:07,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:17:07,389 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:17:07,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:17:07,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:17:07,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:17:07,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:17:07,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:17:07,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:17:07,398 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:17:07,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:17:07,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:17:07,402 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:17:07,402 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:17:07,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:17:07,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:17:07,405 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 12:17:07,431 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:17:07,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:17:07,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:17:07,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:17:07,433 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:17:07,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:17:07,434 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:17:07,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:17:07,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:17:07,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:17:07,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:17:07,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:17:07,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:17:07,435 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:17:07,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:17:07,436 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:17:07,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:17:07,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:17:07,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:17:07,437 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:17:07,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:17:07,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:17:07,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:17:07,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:17:07,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:17:07,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:17:07,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:17:07,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:17:07,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:17:07,439 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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:17:07,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:17:07,940 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:17:07,946 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:17:07,949 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:17:07,951 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:17:07,952 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o200.c [2020-09-25 12:17:08,038 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/866f24084/48a19eb3a2aa4310bf74fbe15faae134/FLAG245c5bcc5 [2020-09-25 12:17:08,564 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:17:08,565 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_o200.c [2020-09-25 12:17:08,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/866f24084/48a19eb3a2aa4310bf74fbe15faae134/FLAG245c5bcc5 [2020-09-25 12:17:08,909 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/866f24084/48a19eb3a2aa4310bf74fbe15faae134 [2020-09-25 12:17:08,922 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:17:08,928 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:17:08,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:17:08,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:17:08,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:17:08,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:17:08" (1/1) ... [2020-09-25 12:17:08,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73f31c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:17:08, skipping insertion in model container [2020-09-25 12:17:08,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:17:08" (1/1) ... [2020-09-25 12:17:08,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:17:08,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:17:09,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:17:09,202 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:17:09,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:17:09,238 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:17:09,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:17:09 WrapperNode [2020-09-25 12:17:09,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:17:09,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:17:09,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:17:09,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:17:09,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:17:09" (1/1) ... [2020-09-25 12:17:09,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:17:09" (1/1) ... [2020-09-25 12:17:09,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:17:09" (1/1) ... [2020-09-25 12:17:09,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:17:09" (1/1) ... [2020-09-25 12:17:09,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:17:09" (1/1) ... [2020-09-25 12:17:09,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:17:09" (1/1) ... [2020-09-25 12:17:09,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:17:09" (1/1) ... [2020-09-25 12:17:09,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:17:09,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:17:09,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:17:09,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:17:09,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:17:09" (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 12:17:09,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:17:09,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:17:09,439 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 12:17:09,439 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:17:09,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 12:17:09,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:17:09,439 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 12:17:09,440 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:17:09,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:17:09,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:17:09,616 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:17:09,617 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 12:17:09,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:17:09 BoogieIcfgContainer [2020-09-25 12:17:09,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:17:09,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:17:09,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:17:09,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:17:09,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:17:08" (1/3) ... [2020-09-25 12:17:09,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e65bb73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:17:09, skipping insertion in model container [2020-09-25 12:17:09,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:17:09" (2/3) ... [2020-09-25 12:17:09,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e65bb73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:17:09, skipping insertion in model container [2020-09-25 12:17:09,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:17:09" (3/3) ... [2020-09-25 12:17:09,632 INFO L109 eAbstractionObserver]: Analyzing ICFG id_o200.c [2020-09-25 12:17:09,643 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:17:09,653 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:17:09,674 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:17:09,702 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:17:09,702 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:17:09,702 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:17:09,702 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:17:09,702 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:17:09,703 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:17:09,703 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:17:09,703 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:17:09,722 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-25 12:17:09,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 12:17:09,729 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:09,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:17:09,730 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:09,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:09,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1651991454, now seen corresponding path program 1 times [2020-09-25 12:17:09,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:09,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077783207] [2020-09-25 12:17:09,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:09,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:09,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:09,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:17:09,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:09,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 12:17:09,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:09,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:09,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:17:09,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 12:17:09,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:17:09,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:17:10,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:10,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:10,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:10,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:17:10,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:10,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:17:10,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:10,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:10,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:10,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:10,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:10,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:10,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 12:17:10,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:10,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:10,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:10,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:10,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:10,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:17:10,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:10,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:10,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:17:10,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:10,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:17:10,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:10,146 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 12:17:10,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077783207] [2020-09-25 12:17:10,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:17:10,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:17:10,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404408500] [2020-09-25 12:17:10,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:17:10,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:17:10,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:17:10,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:17:10,192 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-09-25 12:17:10,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:17:10,268 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-25 12:17:10,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:17:10,270 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 12:17:10,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:17:10,284 INFO L225 Difference]: With dead ends: 37 [2020-09-25 12:17:10,284 INFO L226 Difference]: Without dead ends: 22 [2020-09-25 12:17:10,288 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 12:17:10,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-25 12:17:10,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-25 12:17:10,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-25 12:17:10,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-09-25 12:17:10,347 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16 [2020-09-25 12:17:10,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:17:10,348 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-09-25 12:17:10,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:17:10,348 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-09-25 12:17:10,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 12:17:10,350 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:10,350 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:17:10,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:17:10,351 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:10,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:10,351 INFO L82 PathProgramCache]: Analyzing trace with hash 189324707, now seen corresponding path program 1 times [2020-09-25 12:17:10,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:10,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572415423] [2020-09-25 12:17:10,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:10,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:10,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:10,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:17:10,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:10,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-09-25 12:17:10,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:10,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:10,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:17:10,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 12:17:10,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:17:10,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:17:10,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:10,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:10,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:10,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:17:10,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:10,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:17:10,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:10,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:10,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:10,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:10,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:10,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:10,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 12:17:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:10,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:10,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:10,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:17:10,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:10,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 12:17:10,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:10,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:10,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:17:10,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:10,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:17:10,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:17:10,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:10,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:10,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:10,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:10,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:10,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 12:17:10,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:10,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:10,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:17:10,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:10,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:17:10,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:10,946 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 12:17:10,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572415423] [2020-09-25 12:17:10,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:17:10,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:17:10,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600822556] [2020-09-25 12:17:10,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:17:10,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:17:10,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:17:10,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:17:10,952 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 7 states. [2020-09-25 12:17:11,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:17:11,023 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-09-25 12:17:11,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 12:17:11,024 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-25 12:17:11,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:17:11,026 INFO L225 Difference]: With dead ends: 31 [2020-09-25 12:17:11,026 INFO L226 Difference]: Without dead ends: 26 [2020-09-25 12:17:11,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:17:11,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-25 12:17:11,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-25 12:17:11,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-25 12:17:11,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-25 12:17:11,035 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 23 [2020-09-25 12:17:11,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:17:11,036 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-25 12:17:11,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:17:11,036 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-25 12:17:11,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 12:17:11,038 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:11,038 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:17:11,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:17:11,039 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:11,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:11,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1416732684, now seen corresponding path program 2 times [2020-09-25 12:17:11,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:11,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941680319] [2020-09-25 12:17:11,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:11,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:11,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:11,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:11,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 12:17:11,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:11,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-09-25 12:17:11,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:11,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:11,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:17:11,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 12:17:11,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 12:17:11,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:11,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:11,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:11,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:11,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:17:11,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:11,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:17:11,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:11,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:11,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:11,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:11,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:11,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:11,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 12:17:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:11,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:11,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:11,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:17:11,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:11,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 12:17:11,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:11,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:11,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:17:11,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:11,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 12:17:11,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:11,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:11,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:11,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:11,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:17:11,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:11,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 12:17:11,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:11,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:11,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:17:11,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:11,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:17:11,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:17:11,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:11,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:11,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:11,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:11,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:11,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 12:17:11,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:11,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:11,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:17:11,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:11,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:17:11,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:11,736 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 12:17:11,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941680319] [2020-09-25 12:17:11,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:17:11,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:17:11,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713984464] [2020-09-25 12:17:11,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:17:11,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:17:11,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:17:11,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:17:11,741 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2020-09-25 12:17:11,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:17:11,849 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-09-25 12:17:11,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:17:11,850 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-09-25 12:17:11,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:17:11,851 INFO L225 Difference]: With dead ends: 35 [2020-09-25 12:17:11,851 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 12:17:11,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:17:11,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 12:17:11,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 12:17:11,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 12:17:11,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-25 12:17:11,859 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 30 [2020-09-25 12:17:11,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:17:11,859 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-25 12:17:11,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:17:11,860 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-25 12:17:11,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 12:17:11,861 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:11,861 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:17:11,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:17:11,862 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:11,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:11,862 INFO L82 PathProgramCache]: Analyzing trace with hash -209476043, now seen corresponding path program 3 times [2020-09-25 12:17:11,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:11,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394011399] [2020-09-25 12:17:11,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:11,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:11,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:12,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:12,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 12:17:12,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:12,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-25 12:17:12,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:12,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:12,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:17:12,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 12:17:12,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:17:12,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:12,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:12,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:12,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:12,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:17:12,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:12,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:17:12,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:12,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:12,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:12,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:12,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:12,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:12,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 12:17:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:12,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:12,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:12,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 12:17:12,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:12,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 12:17:12,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:12,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:12,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:17:12,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:12,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:17:12,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:12,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:12,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:12,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:12,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:17:12,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:12,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 12:17:12,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:12,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:12,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:17:12,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:12,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 12:17:12,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:12,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:12,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:12,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:12,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:12,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:17:12,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:12,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 12:17:12,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:12,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:12,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:17:12,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:12,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:17:12,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:12,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:12,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:12,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:12,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:12,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:12,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:17:12,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:12,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:12,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:17:12,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:12,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:17:12,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:12,663 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 12:17:12,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394011399] [2020-09-25 12:17:12,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:17:12,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:17:12,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406273764] [2020-09-25 12:17:12,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:17:12,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:17:12,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:17:12,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:17:12,666 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states. [2020-09-25 12:17:12,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:17:12,799 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-25 12:17:12,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 12:17:12,800 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-09-25 12:17:12,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:17:12,801 INFO L225 Difference]: With dead ends: 39 [2020-09-25 12:17:12,801 INFO L226 Difference]: Without dead ends: 34 [2020-09-25 12:17:12,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:17:12,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-25 12:17:12,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-09-25 12:17:12,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 12:17:12,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-09-25 12:17:12,809 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 37 [2020-09-25 12:17:12,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:17:12,809 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-09-25 12:17:12,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:17:12,810 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-09-25 12:17:12,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 12:17:12,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:12,811 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:17:12,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:17:12,811 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:12,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:12,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1007399302, now seen corresponding path program 4 times [2020-09-25 12:17:12,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:12,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472728373] [2020-09-25 12:17:12,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:12,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:13,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:13,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 12:17:13,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:13,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-09-25 12:17:13,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:13,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:13,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:17:13,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 12:17:13,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:17:13,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:13,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:13,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:13,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:13,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:17:13,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:13,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:17:13,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:13,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:13,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:13,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:13,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:13,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:13,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 12:17:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:13,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:13,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:13,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:17:13,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:13,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-09-25 12:17:13,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:13,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:13,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:17:13,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:13,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 12:17:13,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:13,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:13,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:13,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:13,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 12:17:13,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:13,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-25 12:17:13,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:13,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:13,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:17:13,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:13,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:17:13,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:13,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:13,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:13,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:13,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:17:13,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:13,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 12:17:13,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:13,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:13,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:17:13,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:13,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 12:17:13,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:13,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:13,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:13,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:13,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:17:13,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:13,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 12:17:13,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:13,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:13,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:17:13,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:13,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:17:13,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:13,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:13,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:13,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:13,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:13,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:13,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:17:13,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:13,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:13,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:17:13,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:13,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:17:13,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:13,900 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 12:17:13,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472728373] [2020-09-25 12:17:13,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:17:13,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 12:17:13,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167084465] [2020-09-25 12:17:13,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 12:17:13,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:17:13,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 12:17:13,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:17:13,903 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 13 states. [2020-09-25 12:17:14,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:17:14,073 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-09-25 12:17:14,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 12:17:14,074 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-09-25 12:17:14,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:17:14,075 INFO L225 Difference]: With dead ends: 43 [2020-09-25 12:17:14,075 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 12:17:14,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-09-25 12:17:14,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 12:17:14,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-25 12:17:14,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 12:17:14,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-25 12:17:14,083 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 44 [2020-09-25 12:17:14,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:17:14,083 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-25 12:17:14,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 12:17:14,084 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-25 12:17:14,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 12:17:14,085 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:14,085 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:17:14,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:17:14,085 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:14,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:14,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1787659065, now seen corresponding path program 5 times [2020-09-25 12:17:14,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:14,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124804901] [2020-09-25 12:17:14,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:14,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:14,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:14,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 12:17:14,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:14,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-09-25 12:17:14,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:14,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:14,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 12:17:14,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 12:17:14,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 12:17:14,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:14,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:14,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:14,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:14,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:17:14,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:14,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:17:14,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:14,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:14,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:14,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:14,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:14,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:14,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 12:17:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:14,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:14,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:14,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 12:17:14,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:14,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-09-25 12:17:14,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:14,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:14,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:17:14,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:14,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 12:17:14,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:14,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:14,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:15,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:15,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:17:15,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:15,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-09-25 12:17:15,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:15,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:15,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:17:15,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:15,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 12:17:15,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:15,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:15,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:15,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:15,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 12:17:15,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:15,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 12:17:15,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:15,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:15,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:17:15,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:15,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:17:15,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:15,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:15,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:15,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:15,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:17:15,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:15,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 12:17:15,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:15,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:15,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:17:15,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:15,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 12:17:15,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:15,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:15,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:15,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:15,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:17:15,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:15,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 12:17:15,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:15,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:15,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:17:15,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:15,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:17:15,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:15,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:15,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:15,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:15,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:15,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:15,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:17:15,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:15,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:15,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:17:15,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:15,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:17:15,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:15,635 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 12:17:15,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124804901] [2020-09-25 12:17:15,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:17:15,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 12:17:15,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269484985] [2020-09-25 12:17:15,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 12:17:15,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:17:15,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 12:17:15,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:17:15,638 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 15 states. [2020-09-25 12:17:15,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:17:15,855 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-09-25 12:17:15,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 12:17:15,855 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-09-25 12:17:15,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:17:15,857 INFO L225 Difference]: With dead ends: 47 [2020-09-25 12:17:15,857 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 12:17:15,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-09-25 12:17:15,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 12:17:15,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 12:17:15,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 12:17:15,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-09-25 12:17:15,864 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 51 [2020-09-25 12:17:15,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:17:15,864 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-09-25 12:17:15,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 12:17:15,865 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-09-25 12:17:15,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 12:17:15,866 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:15,866 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:17:15,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:17:15,866 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:15,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:15,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1360883432, now seen corresponding path program 6 times [2020-09-25 12:17:15,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:15,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942823647] [2020-09-25 12:17:15,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:15,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:16,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:16,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 12:17:16,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:16,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 543 [2020-09-25 12:17:16,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:16,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:16,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 12:17:16,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 12:17:16,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:17:16,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:16,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:16,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:16,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:16,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:17:16,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:16,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:17:16,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:16,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:16,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:16,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:16,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:16,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:16,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 12:17:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:16,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:16,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:16,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 12:17:16,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:16,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-09-25 12:17:16,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:16,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:16,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:17:16,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:16,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 12:17:16,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:16,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:16,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:17,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:17,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 12:17:17,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:17,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-09-25 12:17:17,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:17,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:17,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:17:17,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:17,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 12:17:17,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:17,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:17,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:17,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:17,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:17:17,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:17,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-25 12:17:17,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:17,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:17,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:17:17,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:17,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 12:17:17,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:17,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:17,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:17,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:17,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 12:17:17,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:17,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 12:17:17,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:17,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:17,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:17:17,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:17,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:17:17,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:17,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:17,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:17,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:17,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:17:17,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:17,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 12:17:17,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:17,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:17,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:17:17,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:17,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 12:17:17,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:17,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:17,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:17,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:17,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:17:17,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:17,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 12:17:17,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:17,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:17,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:17:17,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:17,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:17:17,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:18,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:18,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:18,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:18,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:18,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:18,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:17:18,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:18,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:18,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:17:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:17:18,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:18,094 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-25 12:17:18,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942823647] [2020-09-25 12:17:18,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:17:18,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 12:17:18,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131625179] [2020-09-25 12:17:18,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 12:17:18,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:17:18,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 12:17:18,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-25 12:17:18,098 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 17 states. [2020-09-25 12:17:18,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:17:18,439 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-25 12:17:18,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 12:17:18,440 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-09-25 12:17:18,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:17:18,443 INFO L225 Difference]: With dead ends: 51 [2020-09-25 12:17:18,443 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 12:17:18,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2020-09-25 12:17:18,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 12:17:18,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-09-25 12:17:18,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-25 12:17:18,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-09-25 12:17:18,457 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 58 [2020-09-25 12:17:18,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:17:18,460 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-09-25 12:17:18,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 12:17:18,460 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-09-25 12:17:18,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 12:17:18,467 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:18,467 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:17:18,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:17:18,470 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:18,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:18,471 INFO L82 PathProgramCache]: Analyzing trace with hash -807968423, now seen corresponding path program 7 times [2020-09-25 12:17:18,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:18,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314448595] [2020-09-25 12:17:18,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:18,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:19,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:19,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 12:17:19,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:19,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 690 [2020-09-25 12:17:19,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:19,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:19,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 12:17:19,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 12:17:19,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:17:19,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:19,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:19,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:19,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:19,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:17:19,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:19,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:17:19,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:19,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:19,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:19,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:19,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:19,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:19,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 12:17:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:19,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:19,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:19,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 12:17:19,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:19,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 600 [2020-09-25 12:17:19,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:19,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:19,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:17:19,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:19,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 12:17:19,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:19,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:19,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:20,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:20,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 12:17:20,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:20,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-09-25 12:17:20,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:20,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:20,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:17:20,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:20,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 12:17:20,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:20,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:20,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:20,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:20,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:20,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 12:17:20,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:20,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-09-25 12:17:20,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:20,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:20,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:17:20,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:20,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 12:17:20,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:20,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:20,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:21,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:21,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:17:21,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:21,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-25 12:17:21,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:21,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:21,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:17:21,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:21,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 12:17:21,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:21,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:21,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:21,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:21,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 12:17:21,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:21,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 12:17:21,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:21,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:21,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:17:21,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:21,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:17:21,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:21,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:21,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:21,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:21,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:17:21,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:21,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 12:17:21,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:21,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:21,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:17:21,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:21,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 12:17:21,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:21,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:21,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:21,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:21,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:17:21,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:21,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 12:17:21,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:21,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:21,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:17:21,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:21,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:17:21,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:21,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:21,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:21,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:21,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:21,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:21,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:17:21,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:21,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:21,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:17:21,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:21,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:17:21,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:21,561 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-25 12:17:21,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314448595] [2020-09-25 12:17:21,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:17:21,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 12:17:21,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698264020] [2020-09-25 12:17:21,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 12:17:21,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:17:21,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 12:17:21,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-09-25 12:17:21,564 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 19 states. [2020-09-25 12:17:21,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:17:21,942 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-09-25 12:17:21,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 12:17:21,943 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-09-25 12:17:21,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:17:21,945 INFO L225 Difference]: With dead ends: 55 [2020-09-25 12:17:21,945 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 12:17:21,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2020-09-25 12:17:21,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 12:17:21,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-25 12:17:21,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 12:17:21,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-25 12:17:21,957 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 65 [2020-09-25 12:17:21,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:17:21,958 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-25 12:17:21,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 12:17:21,958 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-25 12:17:21,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 12:17:21,962 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:21,962 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:17:21,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 12:17:21,963 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:21,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:21,964 INFO L82 PathProgramCache]: Analyzing trace with hash -705364310, now seen corresponding path program 8 times [2020-09-25 12:17:21,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:21,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893865263] [2020-09-25 12:17:21,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:21,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:22,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:22,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 12:17:22,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:22,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 800 [2020-09-25 12:17:22,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:22,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:22,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 12:17:22,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 12:17:22,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 12:17:22,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:22,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:22,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:22,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:22,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:22,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:17:22,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:22,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:17:22,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:22,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:22,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:22,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:22,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:22,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:22,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 12:17:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:22,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:23,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:23,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 12:17:23,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:23,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 670 [2020-09-25 12:17:23,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:23,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:23,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 12:17:23,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:23,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 12:17:23,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:23,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:23,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:24,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:24,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 12:17:24,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:24,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 541 [2020-09-25 12:17:24,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:24,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:24,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:17:24,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:24,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 12:17:24,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:24,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:24,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:24,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:24,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 12:17:24,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:24,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-09-25 12:17:24,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:24,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:24,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:17:24,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:24,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 12:17:24,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:24,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:24,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:24,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:24,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 12:17:24,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:24,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-09-25 12:17:24,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:24,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:24,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:17:24,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:24,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 12:17:24,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:24,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:25,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:25,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:25,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:17:25,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:25,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-25 12:17:25,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:25,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:25,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:17:25,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:25,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 12:17:25,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:25,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:25,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:25,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:25,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 12:17:25,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:25,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 12:17:25,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:25,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:25,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:17:25,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:25,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:17:25,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:25,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:25,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:25,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:25,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:17:25,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:25,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 12:17:25,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:25,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:25,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:17:25,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:25,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 12:17:25,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:25,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:25,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:25,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:25,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:17:25,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:25,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 12:17:25,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:25,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:25,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:17:25,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:25,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:17:25,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:25,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:25,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:25,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:25,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:25,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:25,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:17:25,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:25,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:25,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:17:25,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:25,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:17:25,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:25,754 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-25 12:17:25,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893865263] [2020-09-25 12:17:25,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:17:25,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 12:17:25,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432088922] [2020-09-25 12:17:25,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 12:17:25,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:17:25,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 12:17:25,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-09-25 12:17:25,762 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 21 states. [2020-09-25 12:17:26,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:17:26,203 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-25 12:17:26,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 12:17:26,204 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-09-25 12:17:26,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:17:26,205 INFO L225 Difference]: With dead ends: 59 [2020-09-25 12:17:26,205 INFO L226 Difference]: Without dead ends: 54 [2020-09-25 12:17:26,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2020-09-25 12:17:26,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-25 12:17:26,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-25 12:17:26,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 12:17:26,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-09-25 12:17:26,219 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 72 [2020-09-25 12:17:26,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:17:26,219 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-09-25 12:17:26,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 12:17:26,219 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-09-25 12:17:26,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 12:17:26,220 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:26,221 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:17:26,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 12:17:26,221 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:26,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:26,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1418439701, now seen corresponding path program 9 times [2020-09-25 12:17:26,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:26,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106734087] [2020-09-25 12:17:26,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:26,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:27,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:27,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 12:17:27,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:27,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 962 [2020-09-25 12:17:27,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:27,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:27,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 12:17:27,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-25 12:17:27,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 12:17:27,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:27,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:27,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:27,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:27,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:17:27,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:27,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:17:27,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:27,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:27,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:27,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:27,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:27,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:27,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 12:17:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:27,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:28,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:28,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 12:17:28,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:28,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 820 [2020-09-25 12:17:28,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:28,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:28,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 12:17:28,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:28,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 12:17:28,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:28,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:28,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:28,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:28,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 12:17:28,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:28,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 649 [2020-09-25 12:17:28,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:28,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:28,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 12:17:28,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:28,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 12:17:28,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:28,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:28,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:28,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:29,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:29,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 12:17:29,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:29,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-09-25 12:17:29,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:29,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:29,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:17:29,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:29,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 12:17:29,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:29,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:29,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:29,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:29,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 12:17:29,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:29,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-09-25 12:17:29,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:29,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:29,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:17:29,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:29,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 12:17:29,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:29,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:29,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:30,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:30,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 12:17:30,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:30,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-09-25 12:17:30,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:30,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:30,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:17:30,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:30,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 12:17:30,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:17:30,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:30,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:30,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:30,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:17:30,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:30,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-25 12:17:30,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:30,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:30,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:17:30,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:30,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 12:17:30,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:30,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:30,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:30,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:30,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 12:17:30,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:30,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 12:17:30,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:30,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:30,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:17:30,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:30,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:17:30,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:30,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:30,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:30,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:30,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:17:30,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:30,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 12:17:30,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:30,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:30,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:17:30,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:30,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 12:17:30,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:30,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:30,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:30,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:30,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:17:30,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:30,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 12:17:30,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:30,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:30,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:17:30,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:30,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:17:30,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:30,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:30,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:30,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:30,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:30,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:30,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:17:30,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:30,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:30,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:17:30,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:30,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:17:30,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:30,866 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-25 12:17:30,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106734087] [2020-09-25 12:17:30,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:17:30,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 12:17:30,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397108084] [2020-09-25 12:17:30,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 12:17:30,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:17:30,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 12:17:30,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-09-25 12:17:30,870 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 23 states. [2020-09-25 12:17:31,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:17:31,441 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2020-09-25 12:17:31,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-25 12:17:31,442 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 79 [2020-09-25 12:17:31,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:17:31,443 INFO L225 Difference]: With dead ends: 63 [2020-09-25 12:17:31,443 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 12:17:31,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=973, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 12:17:31,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 12:17:31,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-25 12:17:31,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 12:17:31,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-25 12:17:31,451 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 79 [2020-09-25 12:17:31,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:17:31,451 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-25 12:17:31,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 12:17:31,452 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-25 12:17:31,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 12:17:31,453 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:31,453 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:17:31,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 12:17:31,453 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:31,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:31,454 INFO L82 PathProgramCache]: Analyzing trace with hash -182126020, now seen corresponding path program 10 times [2020-09-25 12:17:31,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:31,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710119556] [2020-09-25 12:17:31,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:31,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:31,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:32,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:32,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 12:17:32,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:32,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1062 [2020-09-25 12:17:32,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:32,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:32,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 12:17:32,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 12:17:32,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 12:17:32,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:32,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:32,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:32,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:32,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:32,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:17:32,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:32,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:17:32,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:32,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:32,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:32,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:32,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:32,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:32,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 12:17:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:32,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:33,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:33,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 12:17:33,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:33,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1119 [2020-09-25 12:17:33,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:33,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:33,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 12:17:33,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:33,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 12:17:33,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:33,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:33,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:34,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:34,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 12:17:34,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:34,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 821 [2020-09-25 12:17:34,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:34,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:34,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 12:17:34,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:34,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 12:17:34,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:34,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:34,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:35,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:35,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 12:17:35,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:35,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 525 [2020-09-25 12:17:35,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:35,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:35,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 12:17:35,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:35,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 12:17:35,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:35,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:35,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:35,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:35,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 12:17:35,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:35,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 501 [2020-09-25 12:17:35,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:35,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:35,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:17:35,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:35,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 12:17:35,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:35,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:35,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:35,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:36,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:36,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 12:17:36,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:36,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-09-25 12:17:36,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:36,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:36,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:17:36,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:36,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 12:17:36,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:36,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:36,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:36,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:36,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 12:17:36,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:36,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-25 12:17:36,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:36,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:36,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:17:36,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:36,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 12:17:36,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:36,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:36,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:36,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:36,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:17:36,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:36,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 12:17:36,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:36,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:36,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:17:36,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:36,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 12:17:36,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:36,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:36,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:36,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:36,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 12:17:36,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:36,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 12:17:36,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:36,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:36,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:17:36,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:36,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:17:36,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:36,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:36,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:36,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:36,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:17:36,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:36,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 12:17:36,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:36,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:36,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:17:36,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:36,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 12:17:36,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:36,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:36,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:36,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:36,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:17:36,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:36,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 12:17:36,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:36,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:36,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:17:36,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:36,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:17:36,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:37,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:37,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:37,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:37,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:37,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:37,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:17:37,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:37,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:37,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:17:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:17:37,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:37,137 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-25 12:17:37,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710119556] [2020-09-25 12:17:37,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:17:37,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 12:17:37,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209854084] [2020-09-25 12:17:37,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 12:17:37,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:17:37,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 12:17:37,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-09-25 12:17:37,152 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 25 states. [2020-09-25 12:17:37,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:17:37,794 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-09-25 12:17:37,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-25 12:17:37,795 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-09-25 12:17:37,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:17:37,796 INFO L225 Difference]: With dead ends: 67 [2020-09-25 12:17:37,796 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 12:17:37,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=1169, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 12:17:37,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 12:17:37,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-09-25 12:17:37,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 12:17:37,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2020-09-25 12:17:37,805 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 86 [2020-09-25 12:17:37,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:17:37,806 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2020-09-25 12:17:37,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 12:17:37,806 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2020-09-25 12:17:37,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-25 12:17:37,807 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:37,807 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:17:37,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 12:17:37,808 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:37,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:37,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1527469181, now seen corresponding path program 11 times [2020-09-25 12:17:37,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:37,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922988432] [2020-09-25 12:17:37,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:37,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:37,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:38,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:38,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-25 12:17:38,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:38,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-09-25 12:17:38,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:38,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:38,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 12:17:38,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 12:17:38,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 12:17:38,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:38,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:38,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:38,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:38,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:17:38,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:38,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:17:38,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:38,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:38,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:38,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:38,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:38,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:38,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 12:17:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:38,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:39,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:39,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 12:17:39,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:39,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 938 [2020-09-25 12:17:39,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:39,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:39,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 12:17:39,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:39,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 12:17:39,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:39,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:39,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:40,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:40,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 12:17:40,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:40,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 832 [2020-09-25 12:17:40,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:40,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:40,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 12:17:40,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:40,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 12:17:40,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:40,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:40,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:41,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:41,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 12:17:41,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:41,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 612 [2020-09-25 12:17:41,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:41,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:41,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 12:17:41,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:41,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 12:17:41,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:41,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:41,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:41,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:41,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 12:17:41,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:41,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-09-25 12:17:41,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:41,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:41,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 12:17:41,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:41,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 12:17:41,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:41,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:41,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:42,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:42,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 12:17:42,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:42,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-09-25 12:17:42,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:42,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:42,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:17:42,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:42,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 12:17:42,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:42,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:42,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:42,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:42,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 12:17:42,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:42,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-09-25 12:17:42,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:42,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:42,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:17:42,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:42,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 12:17:42,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:42,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:42,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:43,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:43,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 12:17:43,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:43,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-25 12:17:43,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:43,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:43,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:17:43,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:43,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 12:17:43,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:43,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:43,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:43,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:43,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:17:43,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:43,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 12:17:43,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:43,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:43,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:17:43,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:43,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 12:17:43,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:43,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:43,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:43,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:43,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:43,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 12:17:43,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:43,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 12:17:43,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:43,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:17:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:17:43,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:43,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:43,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:43,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:43,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:17:43,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:43,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 12:17:43,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:43,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:43,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:17:43,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:43,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 12:17:43,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:43,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:43,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:43,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:43,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:17:43,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:43,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 12:17:43,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:43,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:43,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:17:43,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:43,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:17:43,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:43,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:43,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:43,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:43,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:43,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:43,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:17:43,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:43,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:43,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:17:43,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:43,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:17:43,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:43,809 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-09-25 12:17:43,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922988432] [2020-09-25 12:17:43,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:17:43,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 12:17:43,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581000053] [2020-09-25 12:17:43,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 12:17:43,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:17:43,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 12:17:43,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-09-25 12:17:43,812 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 27 states. [2020-09-25 12:17:44,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:17:44,644 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-25 12:17:44,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-25 12:17:44,645 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 93 [2020-09-25 12:17:44,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:17:44,646 INFO L225 Difference]: With dead ends: 71 [2020-09-25 12:17:44,646 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 12:17:44,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=99, Invalid=1383, Unknown=0, NotChecked=0, Total=1482 [2020-09-25 12:17:44,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 12:17:44,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-25 12:17:44,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 12:17:44,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-09-25 12:17:44,665 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 93 [2020-09-25 12:17:44,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:17:44,665 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-09-25 12:17:44,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 12:17:44,665 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-09-25 12:17:44,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-25 12:17:44,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:44,666 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:17:44,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 12:17:44,668 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:44,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:44,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1034648626, now seen corresponding path program 12 times [2020-09-25 12:17:44,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:44,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342311338] [2020-09-25 12:17:44,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:44,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:45,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:45,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 12:17:45,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:45,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1246 [2020-09-25 12:17:45,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:45,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:45,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 12:17:45,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-25 12:17:45,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 12:17:45,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:45,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:45,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:45,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:45,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:45,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:17:45,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:45,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:17:45,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:45,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:45,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:45,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:45,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:45,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:45,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 12:17:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:46,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:47,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:47,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 12:17:47,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:47,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1100 [2020-09-25 12:17:47,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:47,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:47,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 12:17:47,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:47,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 12:17:47,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:47,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:47,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:48,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:48,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 12:17:48,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:48,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1265 [2020-09-25 12:17:48,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:48,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:48,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 12:17:48,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:48,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 12:17:48,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:48,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:48,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:49,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:49,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 12:17:49,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:49,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 745 [2020-09-25 12:17:49,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:49,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:49,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 12:17:49,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:49,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 12:17:49,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:49,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:49,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:49,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:49,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 12:17:49,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:49,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-09-25 12:17:49,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:49,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:49,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 12:17:49,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:49,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 12:17:49,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:49,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:49,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:50,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:50,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 12:17:50,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:50,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-09-25 12:17:50,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:50,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:50,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 12:17:50,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:50,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 12:17:50,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:50,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:50,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:50,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:50,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 12:17:50,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:50,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-09-25 12:17:50,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:50,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:50,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:17:50,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:50,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 12:17:50,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:51,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:51,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:51,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:51,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 12:17:51,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:51,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-09-25 12:17:51,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:51,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:51,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:17:51,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:51,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 12:17:51,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:51,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:51,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:51,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:51,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 12:17:51,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:51,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-25 12:17:51,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:51,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:51,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:17:51,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:51,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 12:17:51,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:51,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:51,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:51,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:51,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:17:51,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:51,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 12:17:51,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:51,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:51,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:17:51,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:51,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 12:17:51,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:51,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:51,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:51,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:51,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:51,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 12:17:51,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:51,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 12:17:51,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:51,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:51,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:17:51,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:51,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:17:51,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:52,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:52,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:52,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:52,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:17:52,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:52,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 12:17:52,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:52,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:52,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:17:52,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:52,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 12:17:52,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:52,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:52,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:52,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:52,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:17:52,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:52,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:17:52,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:52,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:52,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:17:52,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:52,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:17:52,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:52,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:52,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:52,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:52,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:52,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:52,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:17:52,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:52,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:52,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:17:52,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:52,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:17:52,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:17:52,402 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-09-25 12:17:52,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342311338] [2020-09-25 12:17:52,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:17:52,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-25 12:17:52,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134172974] [2020-09-25 12:17:52,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-25 12:17:52,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:17:52,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-25 12:17:52,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-09-25 12:17:52,405 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 29 states. [2020-09-25 12:17:53,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:17:53,351 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2020-09-25 12:17:53,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-25 12:17:53,351 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 100 [2020-09-25 12:17:53,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:17:53,353 INFO L225 Difference]: With dead ends: 75 [2020-09-25 12:17:53,353 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 12:17:53,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=107, Invalid=1615, Unknown=0, NotChecked=0, Total=1722 [2020-09-25 12:17:53,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 12:17:53,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-25 12:17:53,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 12:17:53,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-25 12:17:53,361 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 100 [2020-09-25 12:17:53,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:17:53,361 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-25 12:17:53,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-25 12:17:53,361 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-25 12:17:53,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 12:17:53,362 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:53,362 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:17:53,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 12:17:53,363 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:53,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:53,363 INFO L82 PathProgramCache]: Analyzing trace with hash 996041487, now seen corresponding path program 13 times [2020-09-25 12:17:53,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:53,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535635332] [2020-09-25 12:17:53,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:53,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:54,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:54,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 12:17:54,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:54,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1465 [2020-09-25 12:17:54,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:54,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:54,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-25 12:17:54,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-25 12:17:54,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 12:17:54,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:54,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:54,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:54,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:54,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:17:54,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:54,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:17:54,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:54,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:54,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:54,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:54,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:54,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:54,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 12:17:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:54,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:56,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:56,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 12:17:56,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:56,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1316 [2020-09-25 12:17:56,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:56,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:56,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-25 12:17:56,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:56,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 12:17:56,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:56,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:56,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:57,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:57,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 12:17:57,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:57,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1148 [2020-09-25 12:17:57,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:57,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:57,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 12:17:57,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:57,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 12:17:57,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:57,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:57,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:58,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:58,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 12:17:58,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:58,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1146 [2020-09-25 12:17:58,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:58,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:58,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 12:17:58,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:58,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 12:17:58,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:58,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:58,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:59,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:59,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 12:17:59,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:59,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 721 [2020-09-25 12:17:59,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:59,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:59,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 12:17:59,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:59,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 12:17:59,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:59,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:59,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:00,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:00,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 12:18:00,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:00,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 555 [2020-09-25 12:18:00,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:00,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:00,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 12:18:00,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:00,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 12:18:00,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:18:00,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:18:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:00,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:00,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:00,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 12:18:00,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:00,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-09-25 12:18:00,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:00,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:00,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 12:18:00,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:00,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 12:18:00,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:00,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:18:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:00,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:00,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:00,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 12:18:00,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:00,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-09-25 12:18:00,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:00,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:00,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:18:00,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:00,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 12:18:00,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:18:01,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:18:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:01,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:01,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:01,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 12:18:01,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:01,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-09-25 12:18:01,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:01,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:01,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:18:01,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:01,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 12:18:01,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:18:01,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:18:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:01,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking...