/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=0.1 --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/MultCommutative-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:58:58,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:58:58,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:58:58,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:58:58,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:58:58,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:58:58,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:58:58,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:58:58,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:58:58,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:58:58,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:58:58,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:58:58,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:58:58,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:58:58,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:58:58,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:58:58,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:58:58,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:58:58,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:58:58,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:58:58,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:58:58,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:58:58,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:58:58,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:58:58,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:58:58,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:58:58,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:58:58,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:58:58,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:58:58,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:58:58,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:58:58,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:58:58,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:58:58,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:58:58,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:58:58,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:58:58,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:58:58,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:58:58,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:58:58,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:58:58,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:58:58,351 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 09:58:58,378 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:58:58,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:58:58,380 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:58:58,380 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:58:58,380 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:58:58,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:58:58,381 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:58:58,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:58:58,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:58:58,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:58:58,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:58:58,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:58:58,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:58:58,382 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:58:58,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:58:58,383 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:58:58,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:58:58,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:58:58,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:58:58,383 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:58:58,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:58:58,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:58:58,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:58:58,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:58:58,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:58:58,385 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:58:58,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:58:58,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:58:58,385 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:58:58,385 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 09:58:58,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:58:58,898 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:58:58,902 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:58:58,904 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:58:58,905 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:58:58,906 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/MultCommutative-2.c [2020-09-25 09:58:59,005 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd02626a7/2010f59082c94705b861a843b503d3cb/FLAGa2fc56a83 [2020-09-25 09:58:59,605 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:58:59,606 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/MultCommutative-2.c [2020-09-25 09:58:59,615 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd02626a7/2010f59082c94705b861a843b503d3cb/FLAGa2fc56a83 [2020-09-25 09:58:59,958 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd02626a7/2010f59082c94705b861a843b503d3cb [2020-09-25 09:58:59,974 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:58:59,981 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:58:59,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:58:59,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:58:59,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:58:59,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:58:59" (1/1) ... [2020-09-25 09:58:59,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d4757cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:59, skipping insertion in model container [2020-09-25 09:58:59,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:58:59" (1/1) ... [2020-09-25 09:59:00,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:59:00,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:59:00,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:59:00,264 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:59:00,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:59:00,306 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:59:00,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:00 WrapperNode [2020-09-25 09:59:00,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:59:00,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:59:00,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:59:00,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:59:00,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:00" (1/1) ... [2020-09-25 09:59:00,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:00" (1/1) ... [2020-09-25 09:59:00,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:00" (1/1) ... [2020-09-25 09:59:00,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:00" (1/1) ... [2020-09-25 09:59:00,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:00" (1/1) ... [2020-09-25 09:59:00,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:00" (1/1) ... [2020-09-25 09:59:00,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:00" (1/1) ... [2020-09-25 09:59:00,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:59:00,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:59:00,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:59:00,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:59:00,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:00" (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 09:59:00,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:59:00,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:59:00,553 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2020-09-25 09:59:00,553 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:59:00,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:59:00,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:59:00,554 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2020-09-25 09:59:00,554 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:59:00,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:59:00,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:59:00,786 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:59:00,786 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 09:59:00,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:59:00 BoogieIcfgContainer [2020-09-25 09:59:00,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:59:00,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:59:00,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:59:00,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:59:00,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:58:59" (1/3) ... [2020-09-25 09:59:00,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7996e01c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:59:00, skipping insertion in model container [2020-09-25 09:59:00,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:00" (2/3) ... [2020-09-25 09:59:00,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7996e01c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:59:00, skipping insertion in model container [2020-09-25 09:59:00,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:59:00" (3/3) ... [2020-09-25 09:59:00,803 INFO L109 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2020-09-25 09:59:00,819 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:59:00,834 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:59:00,892 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:59:00,952 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:59:00,953 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:59:00,953 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:59:00,953 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:59:00,953 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:59:00,953 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:59:00,954 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:59:00,954 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:59:00,977 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 09:59:00,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 09:59:00,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:00,989 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:00,989 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:00,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:00,998 INFO L82 PathProgramCache]: Analyzing trace with hash 2060884630, now seen corresponding path program 1 times [2020-09-25 09:59:01,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:01,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752902052] [2020-09-25 09:59:01,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:01,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:01,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:01,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:02,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:02,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 09:59:02,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:59:02,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1074 [2020-09-25 09:59:02,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:02,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:02,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:59:02,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:59:02,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 09:59:02,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:59:02,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:02,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:02,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:02,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:02,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:02,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:59:02,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:02,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:02,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:02,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:02,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:02,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:02,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 09:59:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:02,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:02,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:02,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:59:02,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:02,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 09:59:02,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:02,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:02,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:59:02,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:02,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:59:02,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:02,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 09:59:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:02,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:02,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:02,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:59:02,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:02,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:59:02,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:02,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:02,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:59:02,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:02,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:59:02,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:02,480 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 09:59:02,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752902052] [2020-09-25 09:59:02,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:59:02,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:59:02,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938129940] [2020-09-25 09:59:02,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:59:02,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:02,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:59:02,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:59:02,531 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 09:59:02,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:02,704 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2020-09-25 09:59:02,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:59:02,706 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-09-25 09:59:02,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:02,721 INFO L225 Difference]: With dead ends: 64 [2020-09-25 09:59:02,722 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 09:59:02,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 09:59:02,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 09:59:02,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-25 09:59:02,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 09:59:02,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 09:59:02,789 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 36 [2020-09-25 09:59:02,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:02,790 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 09:59:02,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:59:02,790 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 09:59:02,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 09:59:02,793 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:02,794 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:02,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:59:02,794 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:02,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:02,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1309951713, now seen corresponding path program 1 times [2020-09-25 09:59:02,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:02,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557479138] [2020-09-25 09:59:02,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:02,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:02,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:02,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 09:59:02,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:02,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 09:59:02,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:02,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:02,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:59:02,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 09:59:02,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:59:02,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:02,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:02,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:02,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:02,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:02,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:02,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:59:02,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:02,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:02,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:02,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:02,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:02,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:02,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 09:59:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:02,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:02,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:02,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:59:02,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:02,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 09:59:02,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:02,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:02,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:02,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:02,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:02,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:02,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:02,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:02,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:02,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:59:02,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:02,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:59:02,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:02,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:02,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:02,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:02,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:02,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:02,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 09:59:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:02,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:03,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:03,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:59:03,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:03,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:59:03,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:03,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:03,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:59:03,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:03,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:59:03,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:03,023 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 09:59:03,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557479138] [2020-09-25 09:59:03,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:59:03,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:59:03,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436695969] [2020-09-25 09:59:03,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:59:03,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:03,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:59:03,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:59:03,028 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 5 states. [2020-09-25 09:59:03,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:03,103 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2020-09-25 09:59:03,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:59:03,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-09-25 09:59:03,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:03,106 INFO L225 Difference]: With dead ends: 51 [2020-09-25 09:59:03,107 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 09:59:03,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 09:59:03,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 09:59:03,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-25 09:59:03,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 09:59:03,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-09-25 09:59:03,118 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 46 [2020-09-25 09:59:03,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:03,119 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-09-25 09:59:03,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:59:03,119 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-09-25 09:59:03,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 09:59:03,122 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:03,122 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:03,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:59:03,123 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:03,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:03,124 INFO L82 PathProgramCache]: Analyzing trace with hash -793708719, now seen corresponding path program 1 times [2020-09-25 09:59:03,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:03,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461166292] [2020-09-25 09:59:03,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:03,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:03,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:03,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:03,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:03,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:04,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:04,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:04,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:05,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:05,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 09:59:05,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:59:05,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2027 [2020-09-25 09:59:05,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:05,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:05,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:59:05,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:59:05,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 09:59:05,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:05,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:05,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:05,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:05,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:05,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:05,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:59:05,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:05,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:05,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:05,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:05,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:05,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:05,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 09:59:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:05,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:05,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:05,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:59:05,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:05,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:59:05,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:05,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:05,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:59:05,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:05,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 09:59:05,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:05,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:05,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:05,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:05,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:59:05,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:05,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:59:05,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:05,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:05,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:05,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:05,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:05,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:05,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 09:59:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:05,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:05,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:05,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:05,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:05,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:05,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 09:59:05,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:59:05,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 565 [2020-09-25 09:59:05,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:05,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:05,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:59:05,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 09:59:05,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 09:59:05,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:05,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:05,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:05,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:05,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:59:05,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:05,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 09:59:05,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:05,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:05,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:59:05,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:05,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 09:59:05,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:05,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:05,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:05,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:05,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:59:05,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:05,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:59:05,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:05,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:05,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:05,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:05,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:05,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:05,925 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-09-25 09:59:05,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461166292] [2020-09-25 09:59:05,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:59:05,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:59:05,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553524961] [2020-09-25 09:59:05,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:59:05,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:05,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:59:05,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:59:05,929 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 5 states. [2020-09-25 09:59:06,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:06,060 INFO L93 Difference]: Finished difference Result 79 states and 102 transitions. [2020-09-25 09:59:06,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:59:06,060 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-09-25 09:59:06,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:06,062 INFO L225 Difference]: With dead ends: 79 [2020-09-25 09:59:06,063 INFO L226 Difference]: Without dead ends: 47 [2020-09-25 09:59:06,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 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 09:59:06,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-25 09:59:06,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2020-09-25 09:59:06,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 09:59:06,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-09-25 09:59:06,084 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 65 [2020-09-25 09:59:06,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:06,087 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-09-25 09:59:06,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:59:06,087 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-09-25 09:59:06,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 09:59:06,090 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:06,094 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:06,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:59:06,095 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:06,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:06,095 INFO L82 PathProgramCache]: Analyzing trace with hash 942191350, now seen corresponding path program 2 times [2020-09-25 09:59:06,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:06,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252133264] [2020-09-25 09:59:06,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:06,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:06,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:06,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 09:59:06,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:06,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 614 [2020-09-25 09:59:06,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:06,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:06,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 09:59:06,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:59:06,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 09:59:06,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 09:59:06,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:06,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:06,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:06,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:06,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:06,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:59:06,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:06,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:06,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:06,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:06,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:06,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:06,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 09:59:06,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:06,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:06,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:06,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:59:06,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:06,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 09:59:06,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:06,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:06,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 09:59:06,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:06,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 09:59:06,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:06,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:06,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:07,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:07,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:59:07,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:07,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 09:59:07,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:07,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:07,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:59:07,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:07,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:59:07,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:59:07,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 09:59:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:07,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:07,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:07,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:59:07,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:07,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 09:59:07,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:07,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:07,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 09:59:07,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:07,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 09:59:07,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:07,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:07,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:07,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:07,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:59:07,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:07,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 09:59:07,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:07,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:07,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:59:07,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:07,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:59:07,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:07,501 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 09:59:07,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252133264] [2020-09-25 09:59:07,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:59:07,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 09:59:07,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927918192] [2020-09-25 09:59:07,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 09:59:07,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:07,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 09:59:07,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:59:07,504 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 17 states. [2020-09-25 09:59:08,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:08,085 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2020-09-25 09:59:08,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 09:59:08,085 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-09-25 09:59:08,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:08,087 INFO L225 Difference]: With dead ends: 68 [2020-09-25 09:59:08,087 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 09:59:08,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2020-09-25 09:59:08,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 09:59:08,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 51. [2020-09-25 09:59:08,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-25 09:59:08,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2020-09-25 09:59:08,100 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 56 [2020-09-25 09:59:08,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:08,101 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2020-09-25 09:59:08,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 09:59:08,102 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2020-09-25 09:59:08,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 09:59:08,104 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:08,104 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:08,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:59:08,104 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:08,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:08,105 INFO L82 PathProgramCache]: Analyzing trace with hash -156864787, now seen corresponding path program 2 times [2020-09-25 09:59:08,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:08,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080873193] [2020-09-25 09:59:08,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:08,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:08,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:08,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:08,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:09,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:10,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:10,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:10,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 09:59:10,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:59:10,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2719 [2020-09-25 09:59:10,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:10,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:10,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 09:59:10,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:59:10,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 09:59:10,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:10,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:10,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:10,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:10,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:10,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:10,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:59:10,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:10,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:10,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:10,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:10,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:10,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:59:10,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 09:59:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:10,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:10,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:10,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:59:10,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:10,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 09:59:10,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:10,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:10,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 09:59:10,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:10,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 09:59:10,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:11,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:11,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:11,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:11,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:59:11,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:11,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 09:59:11,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:11,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:11,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:59:11,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:11,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:59:11,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:11,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 09:59:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:11,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:11,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:11,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:11,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:11,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:11,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:11,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 09:59:11,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:59:11,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 692 [2020-09-25 09:59:11,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:11,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:11,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:59:11,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:11,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 09:59:11,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:11,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:11,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:11,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:11,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:11,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 09:59:11,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:59:11,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 09:59:11,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:11,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:11,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:59:11,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:11,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 09:59:11,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:12,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:12,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:12,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:12,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:59:12,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:12,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:59:12,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:12,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:12,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:59:12,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:12,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:59:12,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:12,037 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 4 proven. 40 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 09:59:12,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080873193] [2020-09-25 09:59:12,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:59:12,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 09:59:12,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872080965] [2020-09-25 09:59:12,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 09:59:12,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:12,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 09:59:12,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:59:12,040 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand 16 states. [2020-09-25 09:59:12,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:12,572 INFO L93 Difference]: Finished difference Result 104 states and 128 transitions. [2020-09-25 09:59:12,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 09:59:12,573 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 65 [2020-09-25 09:59:12,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:12,577 INFO L225 Difference]: With dead ends: 104 [2020-09-25 09:59:12,577 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 09:59:12,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2020-09-25 09:59:12,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 09:59:12,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2020-09-25 09:59:12,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-25 09:59:12,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2020-09-25 09:59:12,599 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 65 [2020-09-25 09:59:12,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:12,603 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2020-09-25 09:59:12,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 09:59:12,603 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2020-09-25 09:59:12,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 09:59:12,609 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:12,609 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:12,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:59:12,609 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:12,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:12,610 INFO L82 PathProgramCache]: Analyzing trace with hash 387973505, now seen corresponding path program 3 times [2020-09-25 09:59:12,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:12,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830325468] [2020-09-25 09:59:12,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:12,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:13,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:13,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 09:59:13,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:13,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 876 [2020-09-25 09:59:13,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:13,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:13,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 09:59:13,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:59:13,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 09:59:13,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:13,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:13,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:13,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:13,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:13,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:13,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:59:13,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:13,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:13,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:13,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:13,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:13,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 09:59:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:13,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:13,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:13,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:59:13,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:13,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 09:59:13,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:13,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:13,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 09:59:13,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:13,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 09:59:13,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:13,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:13,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:13,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:13,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:59:13,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:13,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 09:59:13,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:13,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:13,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:59:13,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:13,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:59:13,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:13,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 09:59:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:13,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:14,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:14,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 09:59:14,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:14,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-09-25 09:59:14,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:14,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:14,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 09:59:14,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:14,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 09:59:14,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:59:14,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:14,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:14,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:14,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:14,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:59:14,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:14,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 09:59:14,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:14,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:14,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 09:59:14,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:14,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 09:59:14,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:14,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:14,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:14,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:14,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:14,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:59:14,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:14,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 09:59:14,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:14,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:14,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:59:14,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:14,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:59:14,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:14,445 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 09:59:14,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830325468] [2020-09-25 09:59:14,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:59:14,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 09:59:14,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128242488] [2020-09-25 09:59:14,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 09:59:14,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:14,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 09:59:14,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-09-25 09:59:14,449 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand 18 states. [2020-09-25 09:59:15,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:15,114 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2020-09-25 09:59:15,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 09:59:15,115 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2020-09-25 09:59:15,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:15,119 INFO L225 Difference]: With dead ends: 73 [2020-09-25 09:59:15,119 INFO L226 Difference]: Without dead ends: 67 [2020-09-25 09:59:15,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2020-09-25 09:59:15,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-25 09:59:15,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2020-09-25 09:59:15,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 09:59:15,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2020-09-25 09:59:15,136 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 66 [2020-09-25 09:59:15,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:15,136 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2020-09-25 09:59:15,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 09:59:15,136 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2020-09-25 09:59:15,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 09:59:15,138 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:15,139 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:15,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:59:15,139 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:15,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:15,140 INFO L82 PathProgramCache]: Analyzing trace with hash 681092950, now seen corresponding path program 4 times [2020-09-25 09:59:15,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:15,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740254559] [2020-09-25 09:59:15,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:15,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:16,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:16,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 09:59:16,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:16,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1105 [2020-09-25 09:59:16,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:16,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:16,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-25 09:59:16,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:59:16,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 09:59:16,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:16,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:16,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:16,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:16,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:16,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:16,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:16,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:59:16,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:16,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:16,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:16,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:16,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:16,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:16,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 09:59:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:16,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:16,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:16,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:59:16,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:16,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 09:59:16,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:16,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 09:59:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 09:59:16,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:16,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:16,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:16,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:16,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:59:16,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:16,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 09:59:16,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:16,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:16,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:59:16,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:16,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:59:16,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:16,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 09:59:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:16,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:17,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:17,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 09:59:17,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:17,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-09-25 09:59:17,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:17,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:17,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 09:59:17,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:17,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 09:59:17,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:17,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:17,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:17,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:17,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 09:59:17,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:17,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-25 09:59:17,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:17,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:17,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 09:59:17,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:17,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 09:59:17,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:59:17,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:17,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:17,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:17,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:59:17,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:17,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 09:59:17,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:17,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:17,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 09:59:17,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:17,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 09:59:17,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:17,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:17,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:17,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:17,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:59:17,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:17,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 09:59:17,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:17,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:17,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:59:17,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:17,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:59:17,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:17,694 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 13 proven. 72 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 09:59:17,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740254559] [2020-09-25 09:59:17,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:59:17,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 09:59:17,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730424660] [2020-09-25 09:59:17,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 09:59:17,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:17,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 09:59:17,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2020-09-25 09:59:17,698 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand 21 states. [2020-09-25 09:59:18,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:18,497 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2020-09-25 09:59:18,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 09:59:18,498 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 76 [2020-09-25 09:59:18,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:18,503 INFO L225 Difference]: With dead ends: 78 [2020-09-25 09:59:18,504 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 09:59:18,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=194, Invalid=1066, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 09:59:18,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 09:59:18,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 61. [2020-09-25 09:59:18,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 09:59:18,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2020-09-25 09:59:18,531 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 76 [2020-09-25 09:59:18,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:18,532 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2020-09-25 09:59:18,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 09:59:18,532 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2020-09-25 09:59:18,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 09:59:18,536 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:18,536 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:18,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 09:59:18,537 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:18,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:18,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1857769359, now seen corresponding path program 3 times [2020-09-25 09:59:18,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:18,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842974102] [2020-09-25 09:59:18,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:18,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:18,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:18,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:18,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:18,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:18,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:19,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:20,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:20,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:20,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:22,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:22,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:22,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:23,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:23,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 09:59:23,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 09:59:23,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 09:59:23,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:23,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:23,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 09:59:23,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 09:59:23,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 09:59:23,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:23,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:23,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:23,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:23,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:23,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:23,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:59:23,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:23,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:23,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:23,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:23,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:23,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:23,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 09:59:23,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:23,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:23,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:23,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:59:23,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:23,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:59:23,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:23,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:23,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:23,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:23,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:23,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:23,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:23,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:23,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:23,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:23,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:59:23,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:23,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:59:23,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:23,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:23,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:23,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:23,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:23,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:23,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 09:59:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:23,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:23,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:23,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:23,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:23,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:24,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:24,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:25,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:25,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:25,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:26,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:26,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 09:59:26,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 09:59:26,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3181 [2020-09-25 09:59:26,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:26,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 09:59:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 09:59:26,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:26,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:26,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:26,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:26,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:26,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:27,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:27,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:27,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:28,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:28,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 09:59:28,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:59:28,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1232 [2020-09-25 09:59:28,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:28,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:28,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:59:28,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:28,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 09:59:28,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:28,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:28,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:28,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:28,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:28,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:28,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:28,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 09:59:28,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:59:28,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 793 [2020-09-25 09:59:28,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:28,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:28,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:59:28,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:28,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 09:59:28,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:28,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:28,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:28,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:28,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:59:28,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:28,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:59:28,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:28,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:28,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:59:28,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:28,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 09:59:28,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:28,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:28,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:28,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:28,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:59:28,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:28,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:59:28,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:28,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:28,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:28,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:28,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:28,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:29,000 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 49 proven. 23 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-25 09:59:29,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842974102] [2020-09-25 09:59:29,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:59:29,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 09:59:29,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418021173] [2020-09-25 09:59:29,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 09:59:29,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:29,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 09:59:29,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:59:29,006 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand 9 states. [2020-09-25 09:59:29,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:29,120 INFO L93 Difference]: Finished difference Result 109 states and 136 transitions. [2020-09-25 09:59:29,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:59:29,121 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 85 [2020-09-25 09:59:29,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:29,122 INFO L225 Difference]: With dead ends: 109 [2020-09-25 09:59:29,123 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 09:59:29,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:59:29,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 09:59:29,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2020-09-25 09:59:29,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 09:59:29,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2020-09-25 09:59:29,136 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 85 [2020-09-25 09:59:29,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:29,138 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2020-09-25 09:59:29,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 09:59:29,139 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2020-09-25 09:59:29,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 09:59:29,139 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:29,140 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:29,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 09:59:29,142 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:29,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:29,143 INFO L82 PathProgramCache]: Analyzing trace with hash -516505397, now seen corresponding path program 5 times [2020-09-25 09:59:29,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:29,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495942365] [2020-09-25 09:59:29,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:29,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:29,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:29,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 09:59:29,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:29,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-09-25 09:59:29,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:29,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:29,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 09:59:29,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:59:29,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 09:59:29,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:29,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:29,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:29,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:29,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:29,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:29,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:59:29,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:29,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:29,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:29,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:29,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:29,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:29,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 09:59:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:29,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:30,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:30,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 09:59:30,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:30,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-25 09:59:30,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:30,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:30,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 09:59:30,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:30,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 09:59:30,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:30,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:30,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:30,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:30,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:30,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:59:30,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:30,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 09:59:30,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:30,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:30,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 09:59:30,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:30,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 09:59:30,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:30,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:30,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:30,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:30,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:59:30,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:30,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 09:59:30,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:30,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:30,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:59:30,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:30,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:59:30,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:30,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 09:59:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:30,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:30,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:30,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:59:30,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:30,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 09:59:30,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:30,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:30,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 09:59:30,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:30,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 09:59:30,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:30,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:30,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:30,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:30,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:59:30,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:30,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:59:30,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:30,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:30,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:59:30,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:30,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:59:30,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:30,636 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 09:59:30,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495942365] [2020-09-25 09:59:30,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:59:30,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 09:59:30,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173552942] [2020-09-25 09:59:30,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 09:59:30,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:30,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 09:59:30,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-09-25 09:59:30,643 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 18 states. [2020-09-25 09:59:31,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:31,335 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2020-09-25 09:59:31,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 09:59:31,336 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2020-09-25 09:59:31,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:31,337 INFO L225 Difference]: With dead ends: 73 [2020-09-25 09:59:31,337 INFO L226 Difference]: Without dead ends: 67 [2020-09-25 09:59:31,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2020-09-25 09:59:31,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-25 09:59:31,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2020-09-25 09:59:31,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 09:59:31,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2020-09-25 09:59:31,353 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 66 [2020-09-25 09:59:31,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:31,354 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2020-09-25 09:59:31,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 09:59:31,354 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2020-09-25 09:59:31,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 09:59:31,355 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:31,355 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:31,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 09:59:31,356 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:31,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:31,356 INFO L82 PathProgramCache]: Analyzing trace with hash -972388074, now seen corresponding path program 6 times [2020-09-25 09:59:31,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:31,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116803965] [2020-09-25 09:59:31,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:31,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:32,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:32,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 09:59:32,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:32,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1024 [2020-09-25 09:59:32,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:32,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:32,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-25 09:59:32,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:59:32,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 09:59:32,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:32,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:32,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:32,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:32,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:32,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:32,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:59:32,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:32,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:32,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:32,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:32,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:32,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:32,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 09:59:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:32,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:32,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:32,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 09:59:32,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:32,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 09:59:32,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:32,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:32,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 09:59:32,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:32,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 09:59:32,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:32,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:32,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:32,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:32,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:59:32,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:32,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 09:59:32,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:32,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:32,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 09:59:32,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:32,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 09:59:32,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:32,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:32,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:32,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:32,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:59:32,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:32,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 09:59:32,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:32,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:32,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:59:32,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:32,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:59:32,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:32,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 09:59:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:32,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:33,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:33,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 09:59:33,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:33,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-09-25 09:59:33,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:33,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:33,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 09:59:33,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:33,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 09:59:33,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:33,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:33,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:33,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:33,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:59:33,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:33,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 09:59:33,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:33,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:33,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 09:59:33,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:33,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 09:59:33,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:33,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:33,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:33,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:33,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:33,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:59:33,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:33,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 09:59:33,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:33,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:33,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:59:33,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:33,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:59:33,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:33,433 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 8 proven. 54 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-09-25 09:59:33,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116803965] [2020-09-25 09:59:33,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:59:33,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 09:59:33,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038062294] [2020-09-25 09:59:33,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 09:59:33,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:33,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 09:59:33,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:59:33,437 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand 16 states. [2020-09-25 09:59:33,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:33,992 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2020-09-25 09:59:33,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 09:59:33,993 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 76 [2020-09-25 09:59:33,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:33,995 INFO L225 Difference]: With dead ends: 73 [2020-09-25 09:59:33,995 INFO L226 Difference]: Without dead ends: 67 [2020-09-25 09:59:33,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756 [2020-09-25 09:59:33,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-25 09:59:34,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2020-09-25 09:59:34,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 09:59:34,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2020-09-25 09:59:34,013 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 76 [2020-09-25 09:59:34,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:34,015 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2020-09-25 09:59:34,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 09:59:34,016 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2020-09-25 09:59:34,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 09:59:34,017 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:34,017 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:34,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 09:59:34,018 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:34,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:34,019 INFO L82 PathProgramCache]: Analyzing trace with hash -27101013, now seen corresponding path program 7 times [2020-09-25 09:59:34,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:34,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162562760] [2020-09-25 09:59:34,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:34,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:35,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:35,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 09:59:35,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:35,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1207 [2020-09-25 09:59:35,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:35,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:35,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-25 09:59:35,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:59:35,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 09:59:35,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:35,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:35,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:35,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:35,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:35,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:35,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:59:35,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:35,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:35,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:35,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:35,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:35,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:35,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 09:59:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:35,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:35,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:35,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 09:59:35,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:35,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 09:59:35,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:35,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:35,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 09:59:35,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:35,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 09:59:35,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 09:59:35,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:35,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:35,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:35,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:59:35,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:35,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 09:59:35,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:35,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:35,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 09:59:35,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:35,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 09:59:35,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:35,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:35,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:35,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:35,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:35,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:59:35,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:35,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:59:35,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:35,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:35,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:59:35,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:35,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:59:35,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:35,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 09:59:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:35,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:36,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:36,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 09:59:36,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:36,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-09-25 09:59:36,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:36,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:36,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 09:59:36,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:36,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 09:59:36,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:36,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:36,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:36,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:36,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 09:59:36,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:36,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 09:59:36,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:36,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:36,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 09:59:36,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:36,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 09:59:36,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:36,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:36,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:36,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:36,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:59:36,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:36,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 09:59:36,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:36,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:36,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 09:59:36,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:36,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 09:59:36,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:36,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:36,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:36,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:36,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:59:36,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:36,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 09:59:36,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:36,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:36,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:59:36,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:36,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:59:36,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:36,829 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 20 proven. 92 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-09-25 09:59:36,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162562760] [2020-09-25 09:59:36,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:59:36,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 09:59:36,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900604383] [2020-09-25 09:59:36,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 09:59:36,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:36,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 09:59:36,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2020-09-25 09:59:36,834 INFO L87 Difference]: Start difference. First operand 61 states and 72 transitions. Second operand 22 states. [2020-09-25 09:59:37,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:37,884 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2020-09-25 09:59:37,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 09:59:37,884 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 86 [2020-09-25 09:59:37,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:37,886 INFO L225 Difference]: With dead ends: 78 [2020-09-25 09:59:37,886 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 09:59:37,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=166, Invalid=1166, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 09:59:37,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 09:59:37,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2020-09-25 09:59:37,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 09:59:37,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2020-09-25 09:59:37,894 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 86 [2020-09-25 09:59:37,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:37,894 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2020-09-25 09:59:37,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 09:59:37,894 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2020-09-25 09:59:37,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-25 09:59:37,896 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:37,896 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:37,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 09:59:37,896 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:37,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:37,897 INFO L82 PathProgramCache]: Analyzing trace with hash -694157514, now seen corresponding path program 8 times [2020-09-25 09:59:37,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:37,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330574583] [2020-09-25 09:59:37,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:37,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:39,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:39,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 09:59:39,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:39,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1555 [2020-09-25 09:59:39,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:39,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:39,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-09-25 09:59:39,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:59:39,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 09:59:39,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:39,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:39,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:39,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:39,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:39,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:39,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:59:39,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:39,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:39,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:39,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:39,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:39,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:39,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 09:59:39,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:39,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:39,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:39,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 09:59:39,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:39,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 09:59:39,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:39,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:39,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 09:59:39,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:39,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 09:59:39,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:39,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:39,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:39,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:39,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:59:39,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:39,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 09:59:39,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:39,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:39,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 09:59:39,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:39,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 09:59:39,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:39,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:39,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:39,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:39,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:59:39,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:39,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 09:59:39,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:39,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:39,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:59:39,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:39,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:59:39,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:40,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 09:59:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:40,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:40,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:40,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 09:59:40,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:40,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 585 [2020-09-25 09:59:40,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:40,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:40,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 09:59:40,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:40,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 09:59:40,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:40,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:40,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:41,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:41,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 09:59:41,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:41,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-09-25 09:59:41,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:41,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:41,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 09:59:41,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:41,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 09:59:41,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:41,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:41,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:41,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:41,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 09:59:41,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:41,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 09:59:41,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:41,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:41,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 09:59:41,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:41,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 09:59:41,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:41,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:41,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:41,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:41,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:59:41,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:41,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 09:59:41,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:41,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:41,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 09:59:41,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:41,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 09:59:41,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:41,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 09:59:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:41,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:41,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:41,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:59:41,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:41,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 09:59:41,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:41,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:41,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:59:41,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:41,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:59:41,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:41,634 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 24 proven. 126 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-09-25 09:59:41,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330574583] [2020-09-25 09:59:41,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:59:41,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-25 09:59:41,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45282448] [2020-09-25 09:59:41,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-25 09:59:41,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:41,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-25 09:59:41,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=500, Unknown=0, NotChecked=0, Total=552 [2020-09-25 09:59:41,639 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand 24 states. [2020-09-25 09:59:43,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:43,092 INFO L93 Difference]: Finished difference Result 83 states and 99 transitions. [2020-09-25 09:59:43,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 09:59:43,093 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 96 [2020-09-25 09:59:43,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:43,094 INFO L225 Difference]: With dead ends: 83 [2020-09-25 09:59:43,094 INFO L226 Difference]: Without dead ends: 77 [2020-09-25 09:59:43,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=191, Invalid=1531, Unknown=0, NotChecked=0, Total=1722 [2020-09-25 09:59:43,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-25 09:59:43,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2020-09-25 09:59:43,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-25 09:59:43,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2020-09-25 09:59:43,102 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 96 [2020-09-25 09:59:43,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:43,102 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2020-09-25 09:59:43,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-25 09:59:43,103 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2020-09-25 09:59:43,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-09-25 09:59:43,104 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:43,104 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:43,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 09:59:43,105 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:43,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:43,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1979672437, now seen corresponding path program 9 times [2020-09-25 09:59:43,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:43,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072929488] [2020-09-25 09:59:43,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:43,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:43,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking...